Ameren (AEE)

Company ID: 88 | CIK: 0001002910
10-Q view:
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Segments are charted by their disclosed metrics (revenue, segment profit, etc.). Each line is a single segment. Reconciliation/corporate items are excluded. Major customers are shown as a percentage of revenue. Operational KPIs are grouped by metric concept; sub-metrics appear as separate lines.

Geographic Segments

Business Unit / Product Segments

Major Customers (% of Revenue)

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Operational KPIs

Residential electric bill (arpu)

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Nuclear decommissioning trust fund (aum)

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Contractual obligations (backlog)

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Net kilowatt capability (capacity)

MEEIA program spend (capital_expenditures)

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Asbestos lawsuits filed (claims_count)

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Retail customers on alternative supplier (customers)

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Natural gas customers (customers_served)

Emissions reduction target (emissions_co2)

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Equivalent availability factor (fleet_utilization)

Hedged natural gas volume (gas_production)

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Electric Generating Capability (generation_capacity)

Electric Generation Volume (generation_volume)

Employees represented by unions (headcount)

Coal inventory (inventory_units)

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Power sold forward (order_book)

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30-year Treasury yield (other)

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ARO for CCR (other)

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ATM available (other)

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ATM program availability (other)

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ATM program capacity (other)

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ATM program remaining capacity (other)

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ATXI remaining investment (other)

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Accounts receivable past due (other)

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Accounts receivable past due or deferred (other)

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Actual equity ratio (other)

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Additional collateral if below investment grade (other)

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Additional collateral if downgraded (other)

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Allowance for doubtful accounts (other)

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Allowed base ROE (other)

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Allowed return on common equity (other)

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Allowed return on equity (other)

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Allowed transmission ROE (other)

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Ameren Illinois power procurement share (other)

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Ameren Illinois transmission investment (other)

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Ameren Missouri fuel cost (other)

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Ancillary services market revenues (other)

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Ancillary services revenue (other)

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Annual revenue requirement reduction (other)

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Annualized dividend rate (other)

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Asbestos lawsuits (other)

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Asbestos lawsuits pending (other)

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Asbestos liability (other)

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Asset retirement obligations (other)

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Attrition rate (other)

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Auction clearing price (other)

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Available AmerenUE credit line (other)

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Available bank credit lines (other)

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Available borrowing capacity (other)

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Available liquidity (other)

Average coal price (other)

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Average common shares outstanding (other)

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Average employee tenure (other)

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Average hedged generation price (other)

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Average hedged power price (other)

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Average power price (other)

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Average price of EEI power (other)

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Average price per ton of coal (other)

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Average realized interchange price (other)

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Average realized power price (other)

Bad debt expense (other)

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Bank lines of credit available (other)

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Book value per share (other)

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CCR capex (other)

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CCR compliance capex (other)

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CCR compliance capital expenditure estimate (other)

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CCR management capital expenditures (other)

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CCR storage facility ARO (other)

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CILCO former MGP sites (other)

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CIPS former MGP sites (other)

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CIPS power purchases from EEI (other)

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Callaway Nuclear Plant refueling duration (other)

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Callaway decommissioning cost (other)

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Callaway decommissioning costs (other)

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Callaway generator repair cost (other)

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Callaway insurance receivable (other)

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Callaway nuclear capacity share (other)

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Callaway operating license end year (other)

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Callaway operating license extension (other)

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Callaway outage expense (other)

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Callaway outage maintenance (other)

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Callaway outage maintenance cost (other)

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Callaway refueling outage (other)

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Callaway refueling outage duration (other)

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Capacity factor (other)

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Capacity revenue (other)

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Capacity revenue and cost decrease (other)

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Capacity revenue and cost increase (other)

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Capacity revenue decrease (other)

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Capacity revenue increase (other)

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Capacity revenues (other)

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Capacity-only revenue (other)

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Capacity-only revenue expectation (other)

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Capacity-only revenues (other)

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Capital allocated to FERC/Illinois infrastructure (other)

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Capital expenditure estimate (other)

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Capital expenditure guidance (other)

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Capital expenditure plan (other)

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Capital expenditures (other)

Capital expenditures forecast (other)

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Capital expenditures plan (other)

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Capital investment plan (other)

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Capital structure equity ratio (other)

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Capitalization ratio (other)

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Capitalized nuclear investments (other)

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Cash collateral posted (other)

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Circuit miles of electric distribution lines (other)

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Coal and transportation prices (other)

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Coal burned (other)

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Coal consumed (other)

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Coal consumption (other)

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Coal fuel costs hedged volume (other)

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Coal hedged (other)

Coal hedged percentage (other)

Coal hedged volume (other)

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Coal hedging percentage (other)

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Coal inventory days (other)

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Coal inventory days of supply (other)

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Coal inventory days supply (other)

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Coal inventory vs target (other)

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Coal plant availability (other)

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Coal plant availability factor (other)

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Coal price hedged (other)

Coal price increase (other)

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Coal price per ton (other)

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Coal price sensitivity (other)

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Coal price-hedged (other)

Coal procurement commitments (other)

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Coal purchase commitments (other)

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Coal purchases by basin (other)

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Coal requirements covered (other)

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Coal share of generation (other)

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Coal supply at fixed prices (other)

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Coal supply contracted (other)

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Coal supply coverage (other)

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Coal supply fixed price (other)

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Coal supply fixed price coverage (other)

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Coal supply fixed-price coverage (other)

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Coal supply hedged (other)

Coal transport hedged (other)

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Coal transportation hedge coverage (other)

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Coal transportation hedged (other)

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Coal transportation hedged percentage (other)

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Coal transportation hedging percentage (other)

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Coal transportation price hedged (other)

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Coal transportation price sensitivity (other)

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Coal transportation price-hedged (other)

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Coal-fired capacity share (other)

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Coal-fired generation share (other)

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Collateral posted with external parties (other)

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Commercial electric sales growth (other)

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Commercial gas sales (other)

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Commercial gas volume sales (other)

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Commercial kWh sales growth (other)

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Commercial paper capacity available (other)

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Commercial paper interest rate (other)

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Commercial paper outstanding (other)

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Commercial paper rate (other)

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Commercial paper weighted-average rate (other)

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Commercial sales change (other)

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Commercial sales growth (other)

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Committed bank credit lines (other)

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Committed bank lines (other)

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Committed bank lines of credit (other)

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Committed credit facilities available (other)

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Committed infrastructure investment (other)

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Commodity price hedged (other)

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Common Shares Outstanding (other)

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Common Stock Outstanding (other)

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Common dividend payout rate (other)

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Common shareholders of record (other)

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Common shares outstanding (other)

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Common stock outstanding (other)

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Consolidated indebtedness to total capitalization (other)

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Construction expenditures (other)

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Contracted generation output (other)

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Cooling degree days (other)

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Cooling degree days change (other)

Cooling degree-days (other)

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Cooling degree-days change (other)

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Cooling degree-days increase (other)

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Counterparty exposure (other)

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Credit agreement capacity (other)

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Credit capacity available (other)

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Credit facility available (other)

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Customers without power (other)

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Data center agreements (other)

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Data center load agreements (other)

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Debt to capitalization (other)

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Debt to capitalization ratio (other)

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Debt to total capitalization (other)

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Degree days change (other)

Degree-days change (other)

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Delivered coal price (other)

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Diesel fuel surcharge price cap coverage (other)

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Diesel surcharge price cap (other)

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Distribution circuit miles (other)

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Distribution line miles (other)

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Distribution lines underground (other)

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Distribution miles (other)

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Dividend coverage ratio (other)

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Dividend payout rate (other)

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Dividend payout ratio (other)

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Dividend payout ratio target (other)

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Dividends per common share (other)

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Dividends per share (other)

Dividends to operating cash flow (other)

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EEI sales growth (other)

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EV charging stations (other)

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Earnings per diluted share (other)

Earnings per share (other)

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Effective income tax rate (other)

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Effective tax rate (other)

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Electric distribution circuit miles (other)

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Electric distribution line miles (other)

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Electric distribution lines (other)

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Electric distribution miles (other)

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Electric distribution rate base (other)

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Electric distribution rate increase (other)

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Electric energy sales (other)

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Electric generation mix (other)

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Electric kWh sales growth (other)

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Electric rate base (other)

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Electric rate increase (other)

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Electric rate increase approved (other)

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Electric rate increase request (other)

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Electric rate increase requested (other)

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Electric revenue by regulator (other)

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Electric sales (other)

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Electric sales growth (other)

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Electric sales volume (other)

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Electric sales volume change (other)

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Electric sales volume growth (other)

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Electricity sales (other)

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Emission credit sales (other)

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Emission credits sold (other)

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Employee attrition rate (other)

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Employees aged 55+ (other)

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Employees transferred (other)

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Energy Transition Fund (other)

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Energy efficiency goal achievement (other)

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Energy efficiency investment (other)

Energy efficiency investment plan (other)

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Energy efficiency investments (other)

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Energy efficiency net shared benefits (other)

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Energy efficiency program investment (other)

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Energy efficiency program spend (other)

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Energy efficiency rate increase (other)

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Energy efficiency target (other)

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Energy product agreement volume (other)

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Energy product procurement volume (other)

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Energy products procured (other)

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Energy products purchased (other)

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Energy supply fuel mix (other)

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Energy supply mix (other)

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Energy supply mix share (other)

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Energy swaps contracted (other)

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Energy-efficiency investment (other)

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Energy-efficiency investment plan (other)

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Energy-efficiency plan investment (other)

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Energy-efficiency program investment (other)

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Environmental capex (other)

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Environmental capex estimate (other)

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Environmental capex plan (other)

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Environmental capital expenditure estimate (other)

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Environmental capital expenditures (other)

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Environmental compliance capex (other)

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Environmental compliance capital costs (other)

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Environmental compliance capital expenditures (other)

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Environmental remediation liability (other)

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Equity capital structure (other)

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Equity capital structure ratio (other)

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Equity capitalization target (other)

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Equity financing plan (other)

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Equity in capital structure (other)

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Equity issuance plan (other)

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Equity to capitalization (other)

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Equity to capitalization target (other)

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Equity to total capitalization (other)

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Equivalent availability factor (other)

Estimated load growth (other)

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Excess deferred income tax regulatory liability (other)

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Excise taxes recorded (other)

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Expected generation volume (other)

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Expected load growth (other)

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Expected outage maintenance expense (other)

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Expected pension contributions (other)

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Expected residential rate increase (other)

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Expected tax refunds (other)

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FERC allowed base ROE (other)

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FERC allowed return on equity (other)

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FERC base ROE (other)

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FERC transmission ROE (other)

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FERC transmission refund outstanding (other)

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Former MGP remediation sites (other)

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Former MGP sites (other)

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Former manufactured gas plant sites (other)

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Formula rate update increase (other)

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Forward power sales price (other)

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Forward power sales volume (other)

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Forward sale agreement shares (other)

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Forward sale agreements (other)

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Forward sale agreements outstanding (other)

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Forward sale agreements shares (other)

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Forward sale agreements value (other)

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Forward sale settlement (other)

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Forward sale shares (other)

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Fossil fuel share of rate base (other)

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Fuel cost (other)

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Fuel cost hedged (other)

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Fuel cost per MMBtu (other)

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Fuel cost per kWh (other)

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Fuel cost per kWh generated (other)

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Fuel cost per kilowatthour generated (other)

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Fuel cost per mmbtu (other)

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Fuel expense sensitivity to diesel (other)

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Fuel oil contract volume (other)

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Fuel supply mix (other)

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Fuel surcharge price cap (other)

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Funds from operations to interest coverage (other)

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Gas Mains (other)

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Gas distribution mains (other)

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Gas heating degree-days change (other)

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Gas hedged for distribution (other)

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Gas hedged for generation (other)

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Gas main miles (other)

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Gas mains (other)

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Gas rate case request (other)

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Gas sales (other)

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Gas sales change (other)

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Gas sales growth (other)

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Gas sales volume (other)

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Gas sales volume change (other)

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Gas storage capacity (other)

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Gas storage fields (other)

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Gas storage working capacity (other)

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Gas transmission & distribution mains (other)

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Generation by fuel (other)

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Generation fuel mix (other)

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Generation hedged (other)

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Generation output hedged (other)

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Generation output sold forward (other)

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Generation sold forward (other)

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Generation volume sold forward (other)

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Grid modernization capital investment (other)

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Gross instantaneous peak demand (other)

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Gross peak demand (other)

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Guarantees outstanding (other)

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Heating degree days (other)

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Heating degree days change (other)

Heating degree days increase (other)

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Heating degree-days (other)

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Heating degree-days change (other)

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Hedge coverage (other)

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Hedged average price (other)

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Hedged coal fuel volume (other)

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Hedged fuel cost (other)

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Hedged fuel costs (other)

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Hedged fuel oil volume (other)

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Hedged generation (other)

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Hedged generation average price (other)

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Hedged generation price (other)

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Hedged generation sales (other)

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Hedged generation volume (other)

Hedged power volume (other)

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Hedged uranium volume (other)

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IEIMA capital investment (other)

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IP former MGP sites (other)

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IP power purchases from EEI (other)

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Illinois auction sales (other)

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Illinois rate base (other)

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Illinois sales share (other)

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Income tax credit carryforwards (other)

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Indebtedness to total capitalization (other)

No 10-K data

Industrial electric sales change (other)

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Industrial electric sales growth (other)

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Industrial kWh sales growth (other)

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Industrial sales change (other)

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Industrial sales growth (other)

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Infrastructure investment commitment (other)

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Insurance receivable (other)

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Interchange power price (other)

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Interchange revenues (other)

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Interchange sales change (other)

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Interchange sales growth (other)

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Intercompany energy sales (other)

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Intercompany power sale volume (other)

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Interest coverage ratio (other)

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Interest expense sensitivity (other)

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Interest rate sensitivity (other)

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Kilowatthour sales (other)

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Kilowatthour sales growth (other)

No 10-K data

Large load demand (other)

No 10-K data

MEEIA 2019 plan investment (other)

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MEEIA energy efficiency investment (other)

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MEEIA incentive revenue (other)

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MEEIA net shared benefit revenues (other)

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MEEIA performance incentive (other)

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MEEIA performance incentive revenue (other)

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MEEIA plan investment (other)

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MEEIA plan investment cap (other)

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MEEIA plan net shared benefits target (other)

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MEEIA program investment (other)

No 10-K data

MGP remaining obligation (other)

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MGP remediation liability (other)

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MGP remediation obligation (other)

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MGP remediation sites (other)

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MISO capacity price (other)

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MISO credit exposure (other)

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MISO fall capacity price (other)

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MISO transmission investment (other)

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MISO transmission projects (other)

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MISO transmission projects assigned (other)

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MISO transmission projects awarded (other)

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MYRP forecasted rate base (other)

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MYRP requested ROE (other)

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MYRP requested equity ratio (other)

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MYRP revenue requirement (other)

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MYRP staff recommended ROE (other)

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MYRP staff recommended equity ratio (other)

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Merchant Generation Hedged Fuel Costs (other)

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Merchant Generation Hedged Transportation (other)

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Miles of natural gas transmission and distribution mains (other)

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Mitigation relief liability (other)

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MoPSC rate order revenue increase (other)

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Money pool borrowing rate (other)

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Money pool interest rate (other)

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Money pool rate (other)

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Multi-value project investment (other)

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Multi-value transmission project investment (other)

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NOL carryforwards (other)

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NOx Annual allowances (other)

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NOx Emission Allowances (other)

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NOx Ozone allowances (other)

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NOx allowances held (other)

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NOx compliance capex estimate (other)

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NOx emission allowances (other)

NOx emission allowances held (other)

Native electric sales growth (other)

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Native sales growth (other)

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Natural gas contract volume (other)

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Natural gas distribution price-hedged (other)

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Natural gas for distribution hedged (other)

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Natural gas for distribution hedged percentage (other)

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Natural gas for distribution price hedged (other)

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Natural gas for generation hedged (other)

Natural gas for generation hedged percentage (other)

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Natural gas for generation price hedged (other)

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Natural gas hedged (other)

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Natural gas hedged for distribution (other)

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Natural gas hedged for generation (other)

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Natural gas hedged percentage (other)

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Natural gas hedged percentage for distribution (other)

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Natural gas hedged percentage for generation (other)

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Natural gas main miles (other)

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Natural gas mains (other)

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Natural gas mains miles (other)

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Natural gas price hedged (other)

No 10-K data

Natural gas price hedged for distribution (other)

No 10-K data

Natural gas price hedged for generation (other)

No 10-K data

Natural gas price-hedged (other)

No 10-Q data

Natural gas purchase commitments (other)

No 10-K data

Natural gas rate base (other)

No 10-K data

Natural gas rate increase (other)

No 10-K data

Natural gas rate increase request (other)

No 10-K data

Natural gas rate increase requested (other)

No 10-K data

Natural gas rate request (other)

No 10-K data

Natural gas sales (other)

No 10-Q data

Natural gas sales volume (other)

No 10-Q data

Natural gas storage (other)

No 10-Q data

Natural gas supply hedged (other)

No 10-Q data

Natural gas transmission and distribution mains (other)

No 10-Q data

Net available liquidity (other)

No 10-K data

Net derivative fair value (other)

No 10-K data

Net income sensitivity to power prices (other)

No 10-K data

Net liquidity (other)

No 10-K data

Net liquidity available (other)

No 10-K data

Net operating loss carryforwards (other)

No 10-K data

Net periodic pension cost (other)

No 10-K data

Net shared benefits (other)

No 10-K data

Nonvested performance share units (other)

No 10-K data

Noranda annual power usage (other)

No 10-K data

Noranda annual sales volume (other)

No 10-K data

Noranda annual usage (other)

No 10-K data

Noranda power usage (other)

No 10-K data

Noranda rate-based sales volume (other)

No 10-K data

Noranda sales volume basis (other)

No 10-K data

Noranda sales volume change (other)

No 10-K data

Nuclear COL capitalized costs (other)

No 10-K data

Nuclear decommissioning trust fund (other)

No 10-K data

Nuclear fuel financing used (other)

No 10-K data

Nuclear fuel hedge coverage (other)

No 10-K data

Nuclear fuel hedged (other)

No 10-K data

Nuclear fuel hedged percentage (other)

Nuclear fuel lease financed (other)

No 10-K data

Nuclear fuel lease financing (other)

No 10-K data

Nuclear fuel price hedge coverage (other)

No 10-K data

Nuclear fuel price hedged (other)

Nuclear fuel price hedges (other)

No 10-K data

Nuclear fuel price-hedged (other)

Nuclear fuel refueling outage (other)

No 10-K data

Nuclear insurance coverage (other)

No 10-K data

Nuclear outage days (other)

No 10-K data

Nuclear plant repair cost (other)

No 10-K data

Nuclear refueling outage (other)

No 10-K data

Number Of Reportable Segments (other)

No 10-K data

Number of Reportable Segments (other)

Open coal positions (other)

No 10-K data

Open commodity contract volume (other)

No 10-K data

Open commodity contract volumes (other)

No 10-K data

Open natural gas positions (other)

No 10-K data

Open power positions (other)

No 10-K data

Operating revenue mix (other)

No 10-Q data

PRB coal share (other)

No 10-K data

Past due receivables (other)

No 10-K data

Past due receivables percentage (other)

No 10-K data

Past-due receivables (other)

No 10-K data

Peak Demand (other)

No 10-Q data

Peak day gas throughput (other)

No 10-Q data

Peak day throughput (other)

No 10-Q data

Peak demand (other)

No 10-Q data

Peak electric demand (other)

No 10-Q data

Peak supply capability (other)

No 10-Q data

Pending asbestos lawsuits (other)

No 10-K data

Pension contribution guidance (other)

No 10-K data

Pension contributions expected (other)

No 10-K data

Pension plan funded status (other)

No 10-Q data

Performance share units (other)

No 10-K data

Planned annual equity (other)

No 10-K data

Planned annual equity issuance (other)

No 10-K data

Planned capital expenditures (other)

No 10-K data

Planned capital investment (other)

No 10-K data

Planned data center load (other)

No 10-K data

Planned equity issuance (other)

No 10-K data

Planned load growth (other)

No 10-K data

Positions eliminated (other)

No 10-K data

Powder River Basin coal (other)

No 10-Q data

Powder River Basin share (other)

No 10-Q data

Power contract volume (other)

No 10-K data

Power generation hedged (other)

No 10-Q data

Power procured for customers (other)

No 10-Q data

Power sold forward (other)

No 10-K data

Power volume hedged (other)

No 10-K data

Price hedged percentage (other)

No 10-K data

Price per ton of delivered coal (other)

No 10-Q data

Price-hedged requirements (other)

No 10-K data

Price-hedged supply (other)

No 10-Q data

Price-hedged supply percentage (other)

No 10-K data

Procured power share (other)

No 10-Q data

Projected rate base (other)

No 10-K data

Propane-air plants (other)

No 10-Q data

Purchased power (other)

No 10-K data

Purchased power commitments (other)

No 10-K data

Purchased power cost decrease (other)

No 10-K data

Purchased power cost increase (other)

No 10-K data

Purchased power decrease (other)

No 10-K data

Purchased power hedged (other)

No 10-K data

Purchased power hedged percentage (other)

Purchased power price hedged (other)

No 10-K data

Purchased power price-hedged (other)

Purchased power share (other)

No 10-Q data

Q3 earnings increase (other)

No 10-K data

Quarterly common dividend (other)

No 10-K data

ROE sensitivity (other)

No 10-K data

RPS renewable share (other)

No 10-Q data

Rate base (other)

Rate base growth (other)

No 10-K data

Rate case ROE request (other)

No 10-K data

Rate case equity ratio (other)

No 10-K data

Rate case request (other)

No 10-K data

Rate case staff recommendation (other)

No 10-K data

Rate increase approved (other)

No 10-K data

Rate increase requested (other)

No 10-K data

Ratio of earnings to fixed charges (other)

Realized interchange power price (other)

No 10-K data

Receivables past due (other)

No 10-K data

Receivables past due or deferred (other)

No 10-K data

Recognized ROE (other)

No 10-K data

Recognized ROE basis (other)

No 10-K data

Reconciliation adjustment request (other)

No 10-K data

Refueling outage duration (other)

No 10-K data

Regulated revenue share (other)

Renewable energy credits (other)

No 10-K data

Renewable generation investments (other)

No 10-K data

Requested electric rate increase (other)

No 10-K data

Requested return on equity (other)

No 10-K data

Requirements hedged (other)

No 10-K data

Residential and commercial sales change (other)

No 10-Q data

Residential annual electric bill (other)

No 10-Q data

Residential electric bill (other)

No 10-Q data

Residential electric sales growth (other)

No 10-K data

Residential gas sales (other)

No 10-K data

Residential gas volume sales (other)

No 10-K data

Residential kWh sales growth (other)

No 10-K data

Residential kWh usage (other)

No 10-Q data

Residential revenue per kWh (other)

No 10-Q data

Residential revenue per kilowatthour (other)

No 10-Q data

Residential sales change (other)

No 10-K data

Residential sales growth (other)

No 10-K data

Residential usage (other)

No 10-Q data

Residential usage per customer (other)

No 10-Q data

Retail direct access phase-in (other)

No 10-K data

Retail sales volume change (other)

No 10-K data

Retail sales volume growth (other)

No 10-K data

Return on equity (other)

No 10-K data

Revenue mix by source (other)

No 10-Q data

Revenue per kWh (other)

No 10-Q data

Revenue per kilowatt-hour (other)

No 10-Q data

Revenue per kilowatthour (other)

No 10-Q data

Revenue requirement (other)

No 10-K data

Revenue requirement increase (other)

No 10-K data

Rush Island Energy Center net plant balance (other)

No 10-K data

Rush Island net plant (other)

No 10-K data

Rush Island net plant balance (other)

No 10-K data

Rush Island rate base (other)

No 10-K data

SO2 Emission Allowances (other)

No 10-Q data

SO2 allowances held (other)

No 10-K data

SO2 emission allowances (other)

SO2 emission allowances held (other)

Sales growth (other)

No 10-K data

Scheduled outage maintenance expense (other)

No 10-K data

Service area (other)

No 10-K data

Service population (other)

No 10-Q data

Service territory (other)

No 10-Q data

Service territory area (other)

Shares outstanding (other)

Short-term borrowing capacity (other)

No 10-K data

Short-term borrowings (other)

No 10-K data

Short-term borrowings outstanding (other)

No 10-K data

Short-term debt authorization (other)

No 10-K data

Short-term debt capacity (other)

No 10-K data

Smart Energy Plan (other)

No 10-K data

Smart Energy Plan investment (other)

No 10-K data

Smart Energy Plan investments (other)

No 10-K data

Smart grid capital cost (other)

No 10-K data

Smart meter penetration (other)

No 10-Q data

Source of energy supply (other)

No 10-Q data

Spent fuel storage capacity through (other)

No 10-K data

Storm restoration capex (other)

No 10-K data

Storm restoration workforce (other)

No 10-K data

Summer capacity price (other)

No 10-K data

Supply hedged for 2019 (other)

No 10-Q data

TCJA excess collections regulatory liability (other)

No 10-K data

TCJA operating cash flow impact (other)

No 10-K data

TCJA rate base increase (other)

No 10-K data

Taum Sauk insurance receivable (other)

No 10-K data

Taum Sauk rebuild cost (other)

No 10-K data

Tax credit carryforwards (other)

No 10-K data

Tax credit transfers (other)

No 10-K data

Tax credit transfers planned (other)

No 10-K data

Total contractual obligations (other)

No 10-K data

Total kWh sales growth (other)

No 10-K data

Total kilowatthour sales growth (other)

No 10-K data

Total liquidity (other)

No 10-K data

Total other obligations (other)

No 10-K data

Transmission capital expenditures (other)

No 10-K data

Transmission capital investment plan (other)

No 10-K data

Transmission investment guidance (other)

No 10-K data

Transmission rate base growth (other)

No 10-K data

Transmission revenue requirement (other)

No 10-K data

Transmission revenue requirements (other)

No 10-K data

Transportation hedged price (other)

No 10-K data

Transportation hedged volume (other)

No 10-K data

Treasury sensitivity (other)

No 10-K data

UE former MGP sites (other)

No 10-K data

UE power purchases from EEI (other)

No 10-K data

Underground distribution share (other)

No 10-Q data

Underground gas storage (other)

No 10-Q data

Underground gas storage capacity (other)

No 10-Q data

Underground gas storage fields (other)

No 10-Q data

Underground natural gas storage fields (other)

No 10-Q data

Union bargaining coverage (other)

No 10-Q data

Union representation (other)

No 10-Q data

Union represented employees (other)

No 10-Q data

Union workforce share (other)

No 10-K data

Union-represented employees (other)

No 10-Q data

Unrecognized tax benefits (other)

No 10-K data

Unused credit facility availability (other)

No 10-K data

Weather margin effect (other)

No 10-K data

Weather-normalized gas sales change (other)

No 10-Q data

Weather-normalized retail sales change (other)

No 10-Q data

Weather-sensitive residential electric sales growth (other)

No 10-K data

Weather-sensitive sales growth (other)

No 10-K data

Weighted average diluted shares (other)

No 10-K data

Weighted average fuel cost (other)

No 10-Q data

Weighted average shares (other)

No 10-K data

Weighted-average common shares outstanding (other)

No 10-K data

Weighted-average shares basic (other)

No 10-K data

Weighted-average shares diluted (other)

No 10-K data

Wholesale kWh sales growth (other)

No 10-K data

Wind capacity under agreement (other)

No 10-Q data

Wind generation capital expenditure (other)

No 10-K data

Workforce remote working (other)

No 10-K data

Working capital deficit (other)

No 10-K data

Year 2000 assessment phase completion (other)

No 10-K data

Year 2000 external costs (other)

No 10-K data

Year 2000 external costs incurred (other)

No 10-K data

Year 2000 implementation/testing completion (other)

No 10-K data

Year 2000 planning phase completion (other)

No 10-K data

Year 2000 remediation completion (other)

No 10-K data

Year 2000 remediation progress (other)

No 10-K data

Zero emission credit commitment (other)

No 10-K data

Natural Gas Sales (production_volume)

Underground natural gas storage fields (properties)

Coal-fired generation capacity (renewable_capacity)

Source of Energy Supply (renewable_energy_pct)

Service area (square_footage)

No 10-K data

Peak Day Throughput (throughput)

No 10-Q data

Gas Mains (transmission_miles)

MMBtu sales (units_shipped)

Equivalent availability (utilization_rate)

Human capital disclosures. Workforce totals and demographics are point-in-time. Flow metrics use the year-to-date period for 10-Q and full year for 10-K. Workforce actions (RIFs, restructurings, acquisition-related changes) are listed in the table at the bottom.

Workforce Totals

No 10-Q data

Demographics

No 10-Q data
No 10-Q data
No 10-Q data
No 10-Q data
No 10-Q data
No 10-Q data
No 10-Q data
No 10-Q data
No 10-Q data
No 10-Q data
No 10-Q data
No 10-Q data

Workforce Breakdowns

No 10-Q data
No 10-Q data
No 10-Q data
No 10-Q data
No 10-Q data
No 10-Q data

HCM Metrics — Point-in-Time

No 10-Q data

HCM Metrics — Flow (Annual / YTD)

No 10-Q data

Workforce Actions

Period EndTypeStatusAffected% WorkforceAnnouncedExpected CompletionGeographySegment / FunctionChargeSourceNote
2024-12-31plant_closurecompleted2023-092024-10-15MissouriAmeren Missouri — Rush Island Energy Center (coal-fired generation)MD&A
f5-10k / GLM-5.3-flash-HTML		Coal-fired energy center retired October 15, 2024, following a September 2023 court modification of the NSR/Clean Air Act remedy order permitting early retirement in lieu of installing a flue gas desulfurization system. No workforce headcount impact quantified in the filing. Retirement costs (~$476 million, including unrecovered net plant balance) financed via securitized utility tariff bonds issued December 2024; a separate $59 million 2024 charge related to court-ordered mitigation programs (electric school buses and air purifiers), not to severance.
2024-06-30othercompleted12024-04-052024-03-22MissouriCorporate / ExecutiveUSD 1 (millions)other
f5-10q / Qwen3.6-27B-Q8_0		Separation of Bhavani Amirthalingam, Executive Vice President and Chief Customer and Technology Officer. Agreement signed April 5, 2024, effective separation date March 22, 2024. Includes lump sum severance of $1,112,875.
2023-12-31plant_closureannounced2023-092024-10-15Jefferson County, Missouri, United StatesAmeren Missouri — coal-fired generationUSD 519 (millions)other
f5-10k / GLM-5.3-flash-HTML		September 2023 court-modified remedy order set an October 15, 2024 retirement, accelerating the previously planned 2025 closure. Charge is a November 2023 MoPSC securitization petition covering retirement-related costs, not severance. Net plant balance of $530 million classified as plant to be abandoned. Plant operating as MISO system support resource until retirement. No workforce headcount impact quantified.
2022-12-31plant_closurecompleted2022-12MissouriAmeren Missouri — coal-fired electric generationItem_1_Business
f5-10k / GLM-5.3-flash-HTML		Coal-fired Meramec Energy Center retired at the end of its useful life in December 2022; December 2021 MoPSC rate order set a five-year recovery period for certain Meramec costs. Filing does not quantify any headcount impact.
2022-12-31plant_closureannounced2022-062025MissouriAmeren Missouri — coal-fired electric generationItem_1_Business
f5-10k / GLM-5.3-flash-HTML		Retirement of Rush Island Energy Center accelerated from 2039 to 2025, primarily due to NSR/Clean Air Act litigation; subject to district court ruling on modification of the 2019 remedy order. Ameren expects to seek MoPSC approval to securitize retirement costs; net plant balance ~$0.6 billion at Dec 31, 2022. No workforce impact quantified.
2014-12-31divestiture_reductioncompleted2013-12-022013-12-02IllinoisNew AER (Merchant Generation)discontinued_operations_footnote
f5-10k / Qwen3.6-27B-Q8_0		Divestiture of New AER to IPH completed in December 2013. Pension obligations for current/former employees retained by Ameren. Specific headcount reduction not explicitly quantified in the filing, but operations were discontinued.
2014-12-31divestiture_reductioncompleted2014-01-312014-01-31IllinoisMedina Valley (Elgin, Gibson City, Grand Tower energy centers)discontinued_operations_footnote
f5-10k / Qwen3.6-27B-Q8_0		Sale of Elgin, Gibson City, and Grand Tower gas-fired energy centers to Rockland Capital completed in January 2014. Specific headcount reduction not explicitly quantified.
2013-12-31divestiture_reductioncompleted2013-03-142013-12-02IllinoisMerchant Generation (New AER; reported as discontinued operations)discontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		No headcount disclosed; the filing states a significant number of employees left Ameren coincident with the December 2, 2013 closing of the New AER divestiture to IPH. Pension and postretirement obligations were remeasured at closing, producing a $19 million pretax curtailment gain recorded in discontinued operations; union employees not eligible to retire transferred to IPH with assumed collective bargaining agreements. The separate $201 million pretax loss on disposal for New AER is a divestiture loss, not a severance charge. A 2011 voluntary separation program (approximately 340 employees, $28 million charge) discussed in the filing is prior-year activity and excluded per current-fiscal-year scoping.
2013-12-31divestiture_reductioncompleted2013-03-142013-12-02United StatesMerchant Generation (New AER)discontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Divestiture of New AER to IPH closed December 2, 2013; filing states a significant number of employees left Ameren coincident with closing but does not quantify headcount removed
2013-12-31divestiture_reductioncompleted2013-10-012014-01-31United StatesElgin, Gibson City and Grand Tower gas-fired energy centersdiscontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Sale to Rockland Capital completed January 31, 2014 (subsequent event); no headcount disclosed
2013-12-31voluntary_separationcompleted3402011-10-012011-12-31MissouriAmeren Missouri and Ameren ServicesUSD 28 (millions)restructuring_footnote
f5-10k / Qwen3.6-27B-Q8_0		Voluntary separation offers extended in Q4 2011; 340 employees accepted and left by Dec 31, 2011. Pretax charge of $28 million recorded in 2011. Substantially all costs paid in Q1 2012.
2013-12-31divestiture_reductioncompleted2013-03-142013-12-02IllinoisNew AER (Merchant Generation)discontinued_operations_footnote
f5-10k / Qwen3.6-27B-Q8_0		Divestiture of New AER to IPH completed Dec 2, 2013. Significant number of employees left Ameren coincident with divestiture. Specific headcount not disclosed.
2013-09-30divestiture_reductionin_progress2013-03-142013-12-31United StatesMerchant Generation (New AER)MD&A
f5-10q / Qwen3.6-27B-Q8_0		Ameren entered into agreement to divest New AER. Filing anticipates reduction in employees and resulting curtailment gain in pension plans, but does not disclose specific headcount numbers for the divestiture.
2013-09-30othercompletedMissouriAmeren MissouriMD&A
f5-10q / Qwen3.6-27B-Q8_0		Filing mentions 'Ameren Illinois staff additions to comply with the requirements of the IEIMA' and 'Ameren Missouri... wage increases', but provides no specific headcount figures for these changes.
2013-06-30voluntary_separationcompletedMissouriAmeren MissouriUSD 25 (millions)MD&A
f5-10q / Qwen3.6-27B-Q8_0		Filing notes the absence of $25 million in severance payments made in 2012 as a result of voluntary separation offers extended to Ameren Missouri employees in Q4 2011. No new voluntary separation programs or headcount counts are disclosed for the current period.
2013-06-30otherin_progressIllinoisAmeren IllinoisMD&A
f5-10q / Qwen3.6-27B-Q8_0		Filing discloses 'Ameren Illinois staff additions to comply with the requirements of the IEIMA' contributing to increased labor costs. Specific headcount numbers are not provided.
2013-06-30divestiture_reductionin_progress2013-03-142013-12-31United StatesMerchant Generation (AER)MD&A
f5-10q / Qwen3.6-27B-Q8_0		Ameren entered into an agreement to divest New AER. The filing anticipates a reduction in employees and a curtailment gain in pension plans upon closing, but does not disclose the specific number of employees affected.
2013-03-31divestiture_reductionannounced2013-03-142013-12-31United StatesMerchant GenerationMD&A
f5-10q / Qwen3.6-27B-Q8_0		Ameren entered into agreement to divest New AER to IPH. Anticipates reduction in employees caused by divestiture will result in curtailment in pension and postretirement benefit plans.
2012-12-31othercompleted2012IllinoisMerchant Generation (Electric Energy, Inc. - EEI)USD 2 (millions)MD&A
f5-10k / GLM-5.3-flash-HTML		EEI reduced its workforce in 2012; the program resulted in a $2 million pension and management postretirement plan curtailment loss recognized in 2012, and is expected to reduce EEI's annual pretax other operations and maintenance expense by $2-3.5 million going forward. Filer does not state voluntary or involuntary character or affected headcount.
2012-12-31voluntary_separationcompleted2012IllinoisMerchant GenerationUSD 1 (millions)other
f5-10k / GLM-5.3-flash-HTML		Merchant Generation initiated separation programs consistent with Ameren's standard management separation program; $1 million pretax charge recorded in 2012 in other operations and maintenance expense (comparative charges of $4 million in each of 2011 and 2010). Affected headcount not disclosed. Only current-year (2012) charge extracted.
2012-12-31voluntary_separationcompletedUnited StatesMerchant GenerationUSD 1 (millions)other
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Filer states the segment initiated separation programs in each of 2012, 2011 and 2010 under its standard management separation program; pretax charges were $1 million in 2012, $4 million in 2011 and $4 million in 2010. Number of positions affected in 2012 is not disclosed. Only the 2012 charge is captured here.
2012-12-31voluntary_separationcompleted3402011-10-012011-12-31MissouriAmeren Missouri and Ameren ServicesUSD 28 (millions)Note 1 - Summary of Significant Accounting Policies
f5-10k / Qwen3.6-27B-Q8_0		Approximately 340 employees accepted offers and left by Dec 31, 2011. Pretax charge of $28 million recorded in 2011.
2012-12-31restructuringcompleted2012-01-012012-12-31IllinoisMerchant Generation (EEI)MD&A - Outlook
f5-10k / Qwen3.6-27B-Q8_0		EEI reduced its workforce in 2012. Specific headcount not disclosed.
2012-12-31restructuringcompleted2012-01-012012-12-31MissouriAmeren MissouriMD&A - Other Operations and Maintenance Expenses
f5-10k / Qwen3.6-27B-Q8_0		Staff reductions at Ameren Missouri contributed to decreased labor costs. Specific headcount not disclosed.
2012-09-30reduction_in_forcecompleted442012-06-012012-09-30IllinoisMerchant Generation (EEI); management and labor union represented employeesUSD 1 (millions)restructuring_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		EEI announced in June 2012 a workforce reduction of 44 employees in response to lower demand and prices for electricity; substantially complete by end of September 2012. Ameren and Genco each recorded a $1 million pretax charge to Other operations and maintenance. The reduction also triggered a curtailment of EEI's pension and postretirement benefit plans.
2012-09-30voluntary_separationcompleted3402011-12-312011-12-31MissouriAmeren Missouri and Ameren ServicesMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Approximately 340 employees of Ameren Missouri and Ameren Services accepted voluntary separation offers and left the company as of December 31, 2011; estimated annual $20 million reduction in labor-related operations and maintenance expense in 2012. Action occurred in prior fiscal year, disclosed as context in this 10-Q.
2012-09-30restructuringcompleted442012-06-012012-09-30United StatesMerchant Generation (EEI)USD 1 (millions)restructuring_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		EEI reduced workforce by 44 employees (management and union-represented) in response to lower electricity demand and prices; substantially complete by end of September 2012. $1M pretax charge recorded in Other O&M for both Ameren and Genco. Also triggered a $2M curtailment loss on EEI's pension and postretirement plans.
2012-09-30restructuringcompleted442012-06-012012-09-30Merchant GenerationUSD 2 (millions)MD&A
f5-10q / Qwen3.6-27B-Q8_0		EEI announced workforce reduction of 44 employees (management and labor union). Substantially complete by end of September 2012. Ameren and Genco each recorded $1 million pretax charge.
2012-06-30reduction_in_forceannounced442012-062012-09-30IllinoisMerchant Generation (EEI)USD 1 (millions)restructuring_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		EEI announced a workforce reduction of 44 management and union-represented employees in response to lower electricity demand and prices; affected employees to depart during Q3 2012; management employees receive standard severance benefits; charge recorded to Other Operations and Maintenance in Q2 2012; potential pension/postretirement plan curtailment gain or loss under evaluation for Q3 2012.
2012-06-30voluntary_separationcompleted3402011-10-012011-12-31MissouriAmeren Missouri and Ameren ServicesUSD 32 (millions)MD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Approximately 340 employees of Ameren Missouri and Ameren Services accepted voluntary separation offers and departed as of December 31, 2011; severance payments of $32 million were made during the first six months of 2012; estimated $20 million annual reduction in labor-related O&M expense in 2012.
2012-06-30layoffcompleted20112011-12-31IllinoisMerchant Generation (Genco)USD 2 (millions)MD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Genco made severance payments totaling $2 million in 2011 for an involuntary separation program; employee count not disclosed.
2012-06-30otherin_progress2012-06-30IllinoisAmeren IllinoisMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Nine collective bargaining agreements between Ameren Illinois and IBEW expired June 30, 2012 and were extended while negotiations continue; Ameren Illinois seeking concessions on certain benefit provisions; work stoppage could materially affect results.
2012-06-30reduction_in_forceannounced442012-062012-09-30United StatesMerchant Generation (EEI)USD 1 (millions)restructuring_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		EEI announced reduction of 44 employees (management and union-represented) in response to lower electricity demand and prices; departures during Q3 2012. A $1M pretax charge recorded in Q2 2012 to Other O&M. EEI evaluating pension/postretirement curtailment gain or loss for Q3 2012.
2012-06-30reduction_in_forceannounced2012United StatesMerchant Generation (Joppa energy center)MD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Ameren announced a workforce reduction at its Joppa energy center during 2012; no employee count or charge disclosed in this filing.
2012-06-30reduction_in_forceannounced442012-06-012012-09-30Merchant GenerationUSD 1 (millions)MD&A
f5-10q / Qwen3.6-27B-Q8_0		EEI announced reduction of 44 employees (management and labor union) in response to lower demand/prices. $1 million pretax charge recorded to Other Operations and Maintenance.
2012-03-31voluntary_separationcompleted3402011-10-012011-12-31MissouriAmeren Missouri and Ameren ServicesUSD 30 (millions)MD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Approximately 340 employees accepted voluntary separation offers and left as of December 31, 2011; severance payments of $30 million were made in Q1 2012 ($25 million at Ameren Missouri). Ameren estimates an annual $20 million reduction in operations and maintenance expense beginning in 2012.
2012-03-31plant_closurecompleted2011-12-312011-12-31IllinoisMerchant GenerationMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Closure of the Meredosia and Hutsonville energy centers at the end of 2011; associated severance payments were made during Q1 2012. No affected-employee count disclosed.
2011-12-31voluntary_separationcompleted3402011-12-31MissouriAmeren Missouri and Ameren ServicesUSD 28 (millions)other
f5-10k / GLM-5.3-flash-HTML		Offers extended to eligible management and union-represented employees in the fourth quarter of 2011 under Ameren's standard management separation program; approximately 340 employees accepted and departed by December 31, 2011. Ameren recorded a pretax severance charge of $28 million, of which $27 million at Ameren Missouri (to be sought for recovery in its pending electric rate case). Estimated annual $20 million reduction in operations and maintenance expense beginning 2012; substantially all severance payable in Q1 2012 and accrued in accounts and wages payable at year-end.
2011-12-31plant_closurecompleted902011-12-31IllinoisMerchant Generation (Genco) — Meredosia and Hutsonville energy centersUSD 4 (millions)other
f5-10k / GLM-5.3-flash-HTML		Genco ceased operations of the four units at the Meredosia and Hutsonville coal-fired energy centers at the end of 2011, driven primarily by expected compliance costs under the CSAPR and MATS and the absence of a MISO multiyear capacity market. The closure eliminated 90 positions; Ameren and Genco each recorded a $4 million pretax charge for related severance and relocation costs. Separate noncash impairments of $26 million (remaining net plant investment) and $4 million (materials and supplies) were also recorded; severance substantially payable in Q1 2012.
2011-12-31voluntary_separationcompleted3402011-10-012011-12-31United StatesAmeren Missouri and Ameren ServicesUSD 28 (millions)restructuring_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Approximately 340 employees accepted voluntary separation offers and left by December 31, 2011; Ameren recorded a $28 million pretax charge and Ameren Missouri $27 million; $27 million to be sought in Ameren Missouri's pending electric rate case
2011-12-31plant_closurecompleted902011-12-312011-12-31United StatesMerchant Generation (Genco) — Meredosia and Hutsonville energy centersUSD 4 (millions)restructuring_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Closure of four units at end of 2011 eliminated 90 positions; Ameren and Genco each recorded a $4 million pretax charge for severance and relocation costs, substantially paid in Q1 2012; closure driven by expected CSAPR and MATS compliance costs
2011-12-31voluntary_separationcompleted3402011-Q42011-12-31MissouriAmeren Missouri and Ameren ServicesUSD 28 (millions)MD&A
f5-10k / Qwen3.6-27B-Q8_0		Approximately 340 employees accepted voluntary separation offers in Q4 2011. Pretax charge of $28 million recorded.
2011-12-31plant_closurecompleted9020112011-12-31IllinoisGencoUSD 4 (millions)MD&A
f5-10k / Qwen3.6-27B-Q8_0		Closure of Meredosia and Hutsonville energy centers resulted in elimination of 90 positions. Pretax charge of $4 million recorded.
2011-09-30voluntary_separationannounced7152011-10-212011-12-31MissouriAmeren Missouri and Ameren Services; management and labor union-represented employees aged 58 or oldersubsequent_events
f5-10q / GLM-5.3-flash-fp4-HTML		Voluntary separation offer extended to approximately 715 eligible employees; acceptance deadline December 22, 2011; benefits consistent with standard management severance benefits; part of efforts to reduce operations and maintenance expenses.
2011-09-30plant_closureannounced902011-10-042011-12-31IllinoisMerchant Generation - Genco Meredosia and Hutsonville energy centers (four operating units)USD 35 (millions)restructuring_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		Closure driven primarily by expected cost of complying with CSAPR and lack of a multi-year MISO capacity market. Charges comprise $26 million non-cash impairment of plant book value, $5 million non-cash impairment of materials and supplies, and $4 million estimate for future cash severance costs; severance substantially expected to be paid in Q1 2012. Previously recorded AROs for these centers were $38 million.
2011-09-30plant_closureannounced902011-10-042011-12-31IllinoisMerchant GenerationUSD 4 (millions)restructuring_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Closure of four units at Meredosia and Hutsonville energy centers; includes $26M plant impairment and $5M materials impairment in addition to $4M severance estimate. Primarily driven by CSAPR compliance costs.
2011-09-30voluntary_separationannounced7152011-10-212011-12-31MissouriAmeren Missouri and Ameren Servicessubsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Voluntary separation offer to approximately 715 management and union-represented employees aged 58 or older as of December 31, 2011; decision deadline December 22, 2011; benefits consistent with standard management severance.
2011-09-30voluntary_separationannounced7152011-10-212011-12-31MissouriManagement and labor union-represented employees at Ameren Missouri and Ameren Servicessubsequent_events
f5-10q / Qwen3.6-27B-Q8_0		Voluntary separation offer extended to approximately 715 management and labor union-represented employees who are 58 years of age or older as of December 31, 2011. Acceptances expected by December 22, 2011, with employment ending by December 31, 2011.
2011-06-30otherin_progress925United StatesMultiple (IBEW, IUOE, LIUNA, NCF&O, UA represented employees)MD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Collective bargaining agreements covering ~925 employees expire throughout 2011; contracts with multiple unions expired June 30, 2011 and are being extended while negotiations continue. Company notes potential work stoppage risk.
2010-12-31reduction_in_forcein_progress2010Illinois and MissouriMerchant GenerationUSD 4 (millions)other
f5-10k / GLM-5.3-flash-HTML		Filer terms this an involuntary separation program initiated in 2010 to reduce additional positions in the Merchant Generation segment. Pretax severance charge of $4 million recorded in 2010 (also cited in MD&A); roughly $2 million remained accrued in other current liabilities at December 31, 2010. Follows 2009 voluntary and involuntary separation programs that eliminated about 300 positions with a $17 million charge.
2010-12-31restructuringin_progress2010-01-01United StatesMerchant GenerationUSD 4 (millions)restructuring_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		2010 involuntary separation programs at Ameren's Merchant Generation segment; approximately $2 million accrued at December 31, 2010. Number of positions eliminated not disclosed for 2010.
2010-12-31voluntary_separationcompleted2010Merchant GenerationUSD 4 (millions)MD&A
f5-10k / Qwen3.6-27B-Q8_0		Ameren's Merchant Generation segment initiated additional involuntary separation programs in 2010. Pretax charge of $4 million recorded for severance costs.
2010-12-31restructuringcompleted30020092009-12-31Management and Merchant GenerationUSD 17 (millions)MD&A
f5-10k / Qwen3.6-27B-Q8_0		Program initiated in 2009. Approximately 300 positions eliminated. Substantially entire amount paid prior to Dec 31, 2009. Included in 2010 filing for context of ongoing workforce changes.
2010-09-30reduction_in_forcecompleted752010-05-012010-06-30United StatesMerchant GenerationMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Reduction of 75 full-time positions effective during the second quarter of 2010, coupled with other planned spending reductions, expected to reduce 2010 other operations and maintenance expenses to approximately $300 million, roughly 10% below 2009.
2010-09-30reduction_in_forcecompleted752010-05-012010-06-30United StatesMerchant GenerationMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Announced in May 2010; reduction of 75 full-time positions effective during Q2 2010 as part of cost-reduction efforts in the Merchant Generation segment.
2010-09-30voluntary_separationcompleted2009-01-01MissouriAmeren Missouri (UE)USD 7 (millions)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Costs for voluntary and involuntary separation programs incurred in 2009; regulatory asset of $7 million recognized in Q2 2010, amortized over three years. Employee count not disclosed.
2010-09-30voluntary_separationcompleted2009-01-01IllinoisAmeren Illinois (CIPS, CILCO, IP)USD 3 (millions)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		ICC order created a $3 million aggregate regulatory asset for 2009 voluntary and involuntary separation program costs at CIPS, CILCO and IP; amortized over three years from May 2010. Employee count not disclosed.
2010-09-30restructuringcompleted752010-05-012010-06-30United StatesMerchant GenerationMD&A
f5-10q / Qwen3.6-27B-Q8_0		Ameren's Merchant Generation segment announced the reduction of 75 full-time positions effective during the second quarter of 2010.
2010-06-30reduction_in_forcecompleted752010-05-012010-06-30Merchant GenerationMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		In May 2010, Ameren's Merchant Generation segment announced the reduction of 75 full-time positions effective during the second quarter of 2010, coupled with other planned spending reductions expected to lower 2010 other operations and maintenance expenses to approximately $300 million, about 10% lower than 2009.
2010-06-30voluntary_separationcompleted2009-10-01Company-wide (UE and Ameren Illinois Utilities)MD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Voluntary and involuntary employee separation programs initiated in the fourth quarter of 2009 reduced labor costs in 2010; UE recorded a $7 million regulatory asset for these costs, and the ICC created a $3 million regulatory asset for the Ameren Illinois Utilities' 2009 separation program costs, amortized over three years beginning May 2010.
2010-06-30reduction_in_forcecompleted752010-05-012010-06-30United StatesMerchant GenerationMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Announced in May 2010; positions eliminated effective during Q2 2010. Part of broader cost-reduction plan expected to reduce 2010 O&M expenses to approximately $300 million, about 10% below 2009 levels.
2010-06-30restructuringin_progressIllinoisAmeren Illinois Utilities (CIPS, CILCO, IP)MD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		In response to the ICC April 2010 rate order, the Ameren Illinois Utilities instituted a hiring freeze, substantially reduced contractor use, delayed or canceled projects, and reduced reliability-enhancement capital spending. No headcount reduction count disclosed.
2010-06-30voluntary_separationcompletedMissouriUnion Electric Company (UE)USD 7 (millions)restructuring_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		UE's 2009 voluntary and involuntary employee separation program costs were recognized as a $7 million regulatory asset in Q2 2010 per the MoPSC May 2010 rate order; to be amortized over three years beginning July 2010. Employee count not disclosed.
2010-06-30voluntary_separationcompletedIllinoisAmeren Illinois UtilitiesUSD 3 (millions)restructuring_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		ICC April 2010 rate order created a $3 million aggregate regulatory asset for 2009 voluntary and involuntary separation program costs at the Ameren Illinois Utilities; to be amortized over three years beginning May 2010. Employee count not disclosed.
2010-06-30restructuringcompleted752010-05-012010-06-30United StatesMerchant GenerationMD&A
f5-10q / Qwen3.6-27B-Q8_0		Ameren's Merchant Generation segment announced the reduction of 75 full-time positions effective during the second quarter of 2010.
2010-03-31reduction_in_forceannounced752010-052010-06-30United StatesMerchant GenerationMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Merchant Generation segment announced in May 2010 it will reduce staffing by approximately 75 positions, effective during the second quarter of 2010; combined with other planned spending reductions, expected to lower 2010 other operations and maintenance expenses to approximately $300 million, roughly 10% below 2009 levels.
2010-03-31reduction_in_forceannounced752010-052010-06-30United StatesMerchant GenerationMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Announced May 2010, post-quarter. Approximately 75 full-time positions to be eliminated in Q2 2010 as part of cost reductions; expected to reduce 2010 O&M expenses to ~$300M, ~10% below 2009.
2010-03-31restructuringannounced752010-05-01Merchant GenerationMD&A
f5-10q / Qwen3.6-27B-Q8_0		Announced in May 2010; reduction of approximately 75 positions in Merchant Generation segment.
2009-12-31voluntary_separationcompleted2009United States (Missouri and Illinois)Management employees at UE, CIPS, Genco, CILCO and IPrestructuring_footnote
f5-10k / GLM-5.3-flash-HTML		Initiated in the third quarter of 2009, offering eligible management employees severance consistent with the standard management program. Positions eliminated under this program were not separately disclosed; combined with the involuntary separation program and Genco staff reductions, approximately 300 positions were eliminated in 2009. Severance is part of a combined $17 million pretax charge broken out only by registrant (UE $8M, CIPS $1M, Genco $5M, CILCO $2M, IP $1M). Substantially all of the amount was paid before December 31, 2009.
2009-12-31layoffcompleted2009-11United States (Missouri and Illinois)Management positions across UE, CIPS, Genco, CILCO and IPrestructuring_footnote
f5-10k / GLM-5.3-flash-HTML		Involuntary separation program initiated in November 2009 to reduce additional management positions under standard severance terms. Count and charge not separately disclosed; combined with the voluntary program and Genco staff reductions, approximately 300 positions were eliminated and a combined $17 million severance charge was recorded in 2009.
2009-12-31restructuringcompleted2009IllinoisMerchant Generation (Genco) – Meredosia, Grand Tower and Hutsonville generating plantsUSD 4 (millions)restructuring_footnote
f5-10k / GLM-5.3-flash-HTML		Announced in the third quarter of 2009: operational changes and staff reductions at three generating facilities, retirement of two of four units at the Meredosia plant, and a shift of Grand Tower to seasonal May–September operation. The $4 million pretax charge relates to the Meredosia unit retirement and related obsolete inventory (not severance); Genco severance sits within the combined $17 million company-level charge. Approximately 300 positions were eliminated across all 2009 programs combined.
2009-12-31restructuringcompleted3002009-09-302009-12-31United States (Missouri and Illinois)Ameren parent and subsidiaries (UE, CIPS, Genco, CILCO, IP); includes Merchant Generation operational staff reductionsUSD 17 (millions)restructuring_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Consolidated program bundling a Q3 2009 voluntary separation program, a November 2009 involuntary separation program, and Merchant Generation staff reductions; positions eliminated approximately 300. Severance charge split by entity: UE $8M, CIPS $1M, Genco $5M, CILCO $2M, IP $1M. Announcement date reflects quarter-level precision only (voluntary program initiated in Q3 2009). Substantially all of the charge was paid before December 31, 2009. Related operational changes at Genco: two of four Meredosia units retired and Grand Tower converted to seasonal (May–September) operation.
2009-12-31voluntary_separationcompleted2009-01-012009-12-31United StatesManagementItem_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Ameren initiated a voluntary separation program for eligible management employees in 2009. Specific headcount for this component is not isolated from the total.
2009-12-31reduction_in_forcecompleted2009-01-012009-12-31United StatesManagementItem_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Ameren initiated an involuntary separation program to reduce additional management positions in 2009. Specific headcount for this component is not isolated from the total.
2009-12-31restructuringcompleted3002009-01-012009-12-31United StatesMerchant GenerationUSD 17 (millions)Item_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Approximately 300 positions eliminated as a result of voluntary/involuntary separation programs and operational changes at Genco (Meredosia, Grand Tower, Hutsonville plants). Pretax charge of $17 million recorded for severance and staff reductions.
2009-09-30voluntary_separationcompleted2009-09-302009-12-31United States (Missouri and Illinois)Management employees at UE, CIPS, Genco, CILCORP, CILCO, IPUSD 18 (millions)restructuring_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		Voluntary separation program initiated in Q3 2009 for eligible management employees; combined with involuntary program and Merchant Generation staff reductions, approximately 300 positions eliminated; charge recorded in other operations and maintenance expense; substantially all expected to be paid by December 31, 2009
2009-09-30layoffannounced2009-11-30United States (Missouri and Illinois)Management employees at Ameren subsidiariesrestructuring_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		Involuntary separation program initiated in November 2009 to reduce additional management positions under terms consistent with Ameren's standard management severance program; part of combined ~300 position reduction including voluntary program and Merchant Generation staff reductions
2009-09-30reduction_in_forceannounced2009-09-30United States (Illinois and Missouri)Merchant Generationrestructuring_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		Merchant Generation staff reductions announced in Q3 2009; included in the $17.5 million pretax severance charge and the combined ~300 position reduction
2009-09-30plant_closurecompleted2009-09-30United States (Illinois)Genco - Meredosia power plantUSD 4 (millions)restructuring_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		Genco recorded a $4 million pretax charge in Q3 2009 for retirement of two generating units at its Meredosia power plant and related obsolete inventory; part of operational changes and staff reductions at three plants (Meredosia, Grand Tower, Hutsonville), with Genco planning to reduce workforce by approximately 80 positions
2009-09-30voluntary_separationcompleted2009-07-012009-12-31United StatesManagement (Ameren subsidiaries including UE, CIPS, Genco, CILCORP, CILCO, IP)USD 18 (millions)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Voluntary separation program initiated in Q3 2009 for eligible management employees; charge covers both voluntary and involuntary programs plus Merchant Generation staff reductions. Approximately 300 positions total across all programs. Charge allocated: UE $9M, CIPS $1M, Genco $3M, CILCORP $3M, CILCO $3M, IP $1M.
2009-09-30reduction_in_forceannounced2009-11-012009-12-31United StatesManagement (Ameren subsidiaries)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Involuntary separation program initiated in November 2009 to reduce additional management positions; terms consistent with standard management severance program. Included within the $17.5M Q3 charge.
2009-09-30restructuringcompleted2009-07-012009-09-30United StatesMerchant Generation (Genco)USD 4 (millions)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Genco recorded a $4M pretax charge in Q3 2009 for retirement of two generating units at Meredosia power plant and related obsolete inventory; includes associated staff reductions.
2009-09-30restructuringin_progress2009-07-01United StatesMerchant Generation (Genco — Meredosia, Grand Tower, Hutsonville plants)MD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Genco announced operational changes and staff reductions at three plants; plans to reduce workforce by approximately 80 positions. Grand Tower to be operated seasonally May–September with limited staff.
2009-09-30voluntary_separationin_progress2009-09-302009-12-31United StatesManagementUSD 18 (millions)restructuring_footnote
f5-10q / Qwen3.6-27B-Q8_0		Voluntary separation program for eligible management employees initiated in Q3 2009. Charge includes severance costs.
2009-09-30reduction_in_forceannounced2009-11-01United StatesManagementsubsequent_events
f5-10q / Qwen3.6-27B-Q8_0		Involuntary separation program initiated in November 2009 to reduce additional management positions.
2009-09-30restructuringcompleted3002009-09-302009-12-31United StatesVariousrestructuring_footnote
f5-10q / Qwen3.6-27B-Q8_0		Total positions eliminated including voluntary/involuntary management separations and Merchant Generation staff reductions.
2009-09-30restructuringcompleted802009-09-30United StatesMerchant GenerationMD&A
f5-10q / Qwen3.6-27B-Q8_0		Genco plans to reduce workforce by approximately 80 positions due to staff reductions at Meredosia, Grand Tower, and Hutsonville plants.
2009-06-30reduction_in_forceannounced422009-07-012010-03-31Illinois and MissouriNon-rate-regulated GenerationUSD 2 (millions)MD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Announced July 2009; majority of the 42 eliminated positions effective early September 2009, with a smaller group effective March 2010; estimated severance and related costs of approximately $2 million during 2009.
2009-06-30reduction_in_forceannounced422009-072010-03United StatesNon-rate-regulated GenerationUSD 2 (millions)MD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Announced July 2009; majority of 42 positions effective early September 2009, remainder March 2010. Approximately $2M severance and related costs estimated for 2009.
2009-06-30restructuringcompleted5702009-01-012009-01-01IllinoisSupport ServicesMD&A
f5-10q / Qwen3.6-27B-Q8_0		Approximately 570 Ameren Services employees providing support services to Ameren Illinois Utilities were transferred to CILCO (Illinois Regulated).
2009-03-31othercompleted5702009-01-012009-01-01IllinoisSupport services (Ameren Services to CILCO)MD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Internal transfer of approximately 570 Ameren Services employees providing support services to the Ameren Illinois Utilities to CILCO effective January 1, 2009; no net headcount reduction, employees continue serving CIPS, IP and CILCO. Increased CILCO (Illinois Regulated) other operations and maintenance expense by approximately $16 million in the quarter.
2009-03-31othercompleted5702009-01-012009-01-01IllinoisSupport ServicesMD&A
f5-10q / Qwen3.6-27B-Q8_0		Transfer of approximately 570 Ameren Services employees to CILCO to provide support services to Ameren Illinois Utilities.
2008-12-31othercompletedMissouri and IllinoisItem_1_Business
f5-10k / GLM-5.3-flash-HTML		Labor-relations event: all collective bargaining agreements that expired during 2008 were renegotiated and ratified during the fiscal year. Most renewed agreements carry four- or five-year terms expiring in 2011 and 2012. Unions involved: IBEW, IUOE, NCF&O, and the Laborers and Gas Fitters. No headcount change or associated charge was disclosed; the UE–IUOE Local 148 agreement covering approximately 1,100 employees was not among the expired agreements and remains in effect until June 30, 2009.
2008-12-31othercompleted2008-12-31United StatesAll segmentsItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		All CBAs that expired in 2008 were renegotiated and ratified; most have four- or five-year terms expiring in 2011 and 2012. Affected-employee counts not disclosed.
2008-12-31otherannounced1,1002009-06-30United StatesUE (Union Electric Company)Item_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Agreement expires June 30, 2009; disclosed as a forthcoming labor-relations event, not a workforce reduction.
2007-12-31restructuringcompleted2007Corporate-wide (Missouri and Illinois operations)Inactive and ancillary holding-company subsidiaries, including Ameren Energy, Inc. (power marketing and risk management agent for UE)Item_1_Business
f5-10k / GLM-5.3-flash-HTML		Organizational streamlining during late 2007: inactive or ancillary subsidiaries were dissolved, merged or consolidated, including Ameren Energy, Inc., whose power marketing and risk management functions were absorbed by UE. Legal-entity action; no employee headcount impact or associated charge disclosed.
2007-12-31restructuringcompleted2008-022008-02-29Corporate-wide (Missouri and Illinois operations)Development Company; Ameren Energy Resources Company; EEI ownership interestsItem_1_Business
f5-10k / GLM-5.3-flash-HTML		Subsequent to fiscal year-end but completed before the 2008-02-29 filing: Development Company was eliminated through merger and Ameren Energy Resources Company was merged into the newly created Resources Company; UE's and Development Company's 40% EEI ownership interests were transferred to Resources Company on 2008-02-29. Legal-entity reorganization; no employee headcount impact or associated charge disclosed.
2007-12-31otherin_progress2007Missouri and IllinoisUnionized workforce (IBEW, IUOE, NCF&O, Laborers and Gas Fitters)Item_1_Business
f5-10k / GLM-5.3-flash-HTML		2007 collective bargaining cycle: all agreements that expired in 2007 were renegotiated and ratified, except the benefits provisions in IP agreements with IBEW locals 51, 309, 702 and 1306, which remained under negotiation at the filing date with existing provisions in effect. The majority of renewed agreements have four- or five-year terms expiring in 2011 and 2012. Four IP agreements with the Laborers and Gas Fitters unions covering approximately 127 employees expire 2008-06-30.
2005-12-31voluntary_separationcompleted2302004-122005-12-31Illinois, United StatesIP (AmerenIP) — integration-related administrative functionsUSD 26 (millions)business_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		230 IP employees accepted an enhanced voluntary separation opportunity in December 2004; departures occurred throughout 2005 as business needs warranted. Separation costs of $26 million were deferred as a regulatory asset at December 31, 2005 for future recovery from customers, consistent with the ICC order approving Ameren's acquisition of IP. Costs are integration-related, tied to realizing administrative synergies from the acquisition.
2005-12-31voluntary_separationcompleted2302004-12-312005-12-31Illinois, United StatesIllinois Power Company (IP)USD 26 (millions)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		230 IP employees accepted a voluntary separation opportunity in December 2004 with enhanced separation benefits; departures occurred throughout 2005. Separation costs of $26 million deferred as a regulatory asset for future recovery from customers as of 2005-12-31. Consistent with ICC conditions on Ameren's acquisition of IP.
2005-12-31voluntary_separationcompleted2302004-122005-12-31IllinoisIllinois Power Company (IP)USD 26 (millions)Note 2 - Acquisitions
f5-10k / Qwen3.6-27B-Q8_0		230 IP employees accepted a voluntary separation opportunity in December 2004. Separation costs of $26 million were deferred as a regulatory asset. Employees departed throughout 2005.
2005-09-30voluntary_separationin_progress2302004-12IllinoisIllinois Power Company (AmerenIP)USD 25 (millions)MD&A
f5-10q / GLM-5.3-flash-fp4-HTML		December 2004 voluntary separation opportunity at IP with enhanced benefits; employees leaving throughout 2005 as business needs warrant. As of September 30, 2005, $25 million of separation costs deferred as a regulatory asset for future customer recovery, consistent with the ICC order approving the IP acquisition.
2005-09-30voluntary_separationin_progress2302004-12-31United States (Illinois)Illinois Power Company (IP)USD 25 (millions)business_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		230 IP employees accepted a voluntary separation opportunity in December 2004 with enhanced benefits; separations continuing through 2005. $25M separation costs deferred as regulatory asset as of 2005-09-30. Announcement predates this quarter; disclosed as ongoing.
2005-09-30voluntary_separationin_progress2302004-12-01IllinoisIllinois Power Company (IP)USD 25 (millions)business_combinations_footnote
f5-10q / Qwen3.6-27B-Q8_0		230 IP employees accepted voluntary separation opportunity in Dec 2004; leaving throughout 2005. $25M deferred as regulatory asset.
2005-06-30voluntary_separationin_progress2302004-12-01IllinoisIllinois Power Company (AmerenIP)USD 25 (millions)restructuring_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		Employees accepted a voluntary separation opportunity in December 2004 with enhanced separation and extended medical/dental benefits; they leave IP throughout 2005 as business needs warrant. Estimated separation costs of $25 million were deferred as a regulatory asset for future customer recovery, consistent with the ICC order approving the IP acquisition.
2005-06-30voluntary_separationin_progress2302004-12-012005-12-31IllinoisIllinois Power Company (IP)USD 25 (millions)business_combinations_footnote
f5-10q / Qwen3.6-27B-Q8_0		230 IP employees accepted voluntary separation opportunity in Dec 2004; estimated separation costs of $25 million deferred as regulatory asset.
2005-03-31voluntary_separationin_progress2302004-12-012005-12-31IllinoisIllinois Power Company (AmerenIP)USD 26 (millions)MD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Employees accepted a voluntary separation opportunity with enhanced separation and extended medical/dental benefits; departures occur throughout 2005 as business needs warrant. Estimated separation costs of $26 million deferred as a regulatory asset for future customer recovery, consistent with the ICC acquisition order.
2005-03-31othercompleted1002005-05-022005-05-02IllinoisUE Illinois electric and natural gas utility businesses transferred to CIPSother
f5-10q / GLM-5.3-flash-fp4-HTML		Intercompany transfer of UE's Illinois-based utility businesses to CIPS included approximately 100 employees; internal reorganization within Ameren, not a headcount reduction.
2005-03-31divestiture_reductioncompleted1002005-05-022005-05-02Illinois, United StatesElectric and natural gas utility businesses (distribution, certain transmission)subsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		UE transferred approximately 100 employees to CIPS as part of the May 2, 2005 Illinois service territory transfer; accounted for at book value with no gain or loss.
2005-03-31acquisition_additioncompleted2004-09-302004-09-30Illinois, United StatesIllinois Power Company (rate-regulated electric and natural gas T&D)business_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		IP acquisition closed September 30, 2004; no headcount added figure disclosed. IP served 600,000 electric and 415,000 gas customers. Included for context as the acquisition driving current-period workforce composition.
2005-03-31voluntary_separationcompleted2302004-12-012005-12-31Illinois, United StatesIllinois Power CompanyUSD 26 (millions)MD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		230 IP employees accepted a voluntary separation opportunity announced December 2004; employees depart throughout 2005. Estimated separation costs of $26 million deferred as a regulatory asset for future recovery from customers.
2005-03-31voluntary_separationin_progress2302004-12-012005-12-31IllinoisIllinois Power Company (IP)USD 26 (millions)MD&A
f5-10q / Qwen3.6-27B-Q8_0		230 IP employees accepted a voluntary separation opportunity in December 2004; employees will leave throughout 2005. Estimated separation costs of $26 million deferred as regulatory asset.
2004-12-31voluntary_separationin_progress2302004-122005IllinoisIllinois Power Company (AmerenIP)USD 26 (millions)MD&A
f5-10k / GLM-5.3-flash-HTML		230 IP employees accepted an enhanced voluntary separation opportunity (enhanced separation benefit plus extended medical and dental benefits) in December 2004; departures occur throughout 2005 as business needs warrant, consistent with the IP integration plan and ICC acquisition-order conditions on administrative synergies. The estimated $26 million of separation costs was deferred as a regulatory asset for future recovery from customers, per the ICC order.
2004-12-31restructuringcompletedIllinoisCentral Illinois Light Company (CILCO)USD 2 (millions)restructuring_footnote
f5-10k / GLM-5.3-flash-HTML		CILCO recorded $2 million of acquisition-integration costs in 2004, primarily severance and relocation; no employee count was disclosed. Amounts were offset against CILCORP goodwill through purchase accounting, so there was no impact on Ameren's consolidated statement of income.
2004-12-31voluntary_separationcompleted2302004-12-012005-12-31IllinoisIllinois Power Company (IP)USD 26 (millions)MD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		230 IP employees accepted a voluntary separation opportunity providing enhanced separation benefits and extended medical/dental benefits. Estimated separation costs of $26 million deferred as a regulatory asset for future recovery from customers. Employees depart throughout 2005 as business needs warrant. Consistent with ICC order approving the IP acquisition.
2004-12-31acquisition_additioncompleted1,7222004-09-302004-09-30IllinoisIllinois Power Company (IP)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Ameren completed acquisition of IP from Dynegy on September 30, 2004. IP headcount of 1,722 as of December 31, 2004. IP serves approximately 600,000 electric and 415,000 gas customers.
2004-12-31acquisition_additioncompleted7732003-01-312003-01-31IllinoisCILCORP / CILCObusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Ameren completed acquisition of CILCORP on January 31, 2003. CILCORP headcount of 4 (parent) plus CILCO headcount of 769 as of December 31, 2004. Included here for context of workforce additions during the reporting period; acquisition completed prior to FY2004.
2004-12-31voluntary_separationin_progress2302004-12-012005-12-31IllinoisIllinois Power Company (IP)USD 26 (millions)MD&A
f5-10k / Qwen3.6-27B-Q8_0		230 IP employees accepted a voluntary separation opportunity in December 2004. Employees will leave throughout 2005 as business needs warrant. Estimated separation costs of $26 million deferred as regulatory asset.
2004-09-30voluntary_separationannounced9502004-112005-12-31IllinoisIP (AmerenIP) employees — certain employee groupsMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Voluntary separation opportunity for certain IP employee groups, roughly 950 of Ameren's ~9,300 employees; enhanced separation and extended medical/dental benefits; employees must decide by December 20, 2004 and will depart throughout 2005 based on business needs; costs expected to be deferred as a regulatory asset consistent with the ICC acquisition order
2004-09-30acquisition_additioncompleted2004-09-30IllinoisUtility Operations — IP (AmerenIP)business_combinations_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		Ameren completed acquisition of Illinois Power Company on September 30, 2004; IP employees transferred into Ameren defined benefit and postretirement plans; specific headcount added not quantified
2004-09-30otherin_progress2004-10-06IllinoisCILCO — IBEW-represented employeesother
f5-10q / GLM-5.3-flash-fp4-HTML		CILCO labor agreement with IBEW-represented employees (about 4% of Ameren's workforce) expired June 30, 2004; final offer rejected September 29, 2004; company implemented offer terms effective October 11, 2004; employees participated in a one-day work stoppage on October 18, 2004 over a work rule grievance
2004-09-30voluntary_separationannounced9502004-11-092005-12-31United States (Illinois)Illinois Power Company (AmerenIP)MD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Voluntary separation opportunity offered to approximately 950 IP employees (of Ameren's total 9,300). Decisions due by 2004-12-20; departures throughout 2005. Costs expected to be deferred as regulatory asset per ICC order.
2004-09-30acquisition_additioncompleted2004-09-302004-09-30United States (Illinois)Illinois Power Company (AmerenIP)business_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of Illinois Power Company completed 2004-09-30; IP serves ~600,000 electric and ~415,000 gas customers. No specific employee headcount added disclosed in the filing.
2004-09-30voluntary_separationannounced9502004-11-012005-12-31IllinoisIP Operationssubsequent_events
f5-10q / Qwen3.6-27B-Q8_0		Voluntary separation opportunity for certain IP employee groups; decisions due Dec 20, 2004; departures throughout 2005.
2004-06-30otherin_progress2004-08-29IllinoisCILCOother
f5-10q / GLM-5.3-flash-fp4-HTML		Labor agreements covering IBEW-represented CILCO employees expire August 29, 2004; company presented best and final offer and outcome of negotiations is uncertain
2004-06-30otherin_progress2004-08-29Illinois, United StatesCILCO — IBEW-represented employeesother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		CILCO IBEW labor agreements covering ~4% of Ameren workforce expire 2004-08-29; best and final offer presented, outcome uncertain.
2003-12-31voluntary_separationcompleted5502002Missouri and Illinois, United StatesAmeren consolidated (UE, CIPS, Genco and other subsidiaries)USD 75 (millions)restructuring_footnote
f5-10k / GLM-5.3-flash-HTML		Voluntary retirement program initiated in fiscal 2002 with a $75M charge (within $92M total 2002 restructuring charges; charge split UE $51M, CIPS $14M, Genco $8M, other $2M), primarily special termination benefits under pension/postretirement plans. Approximately 550 employees accepted retirement in 2002 and departed in early 2003; FY2003 MD&A credits the program with reduced staffing of over 500 and lower 2003 labor costs (~11 cents per share). Percent-of-workforce not computed because the relevant 2002 base headcount is not disclosed.
2003-12-31acquisition_additioncompleted8622003-01-312003-01-31Illinois, United StatesCILCORP Inc. / CILCO (AmerenCILCO)business_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Ameren completed the acquisition of CILCORP (parent of CILCO) from AES on January 31, 2003; total cost ~$1.4B including $895M assumed debt/preferred stock and $479M cash. The 862 figure is CILCORP's employment (855 at CILCO) as of December 31, 2003 per Item 1; headcount at the acquisition date is not separately disclosed. A related small acquisition of Medina Valley (40 MW gas-fired plant) closed February 4, 2003 with no workforce data disclosed.
2003-12-31restructuringcompleted2003Illinois, United StatesCILCO (AmerenCILCO)USD 21 (millions)restructuring_footnote
f5-10k / GLM-5.3-flash-HTML		2003 CILCO acquisition integration costs of $21M comprising $13M software write-offs, $5M severance and relocation costs, and a $3M bad debt reserve increase. Total was offset against CILCORP goodwill through purchase accounting, so no impact on Ameren's consolidated income statement. No affected-employee count disclosed.
2003-12-31othercompleted2003Missouri and Illinois, United StatesUE, CIPS and Genco — eleven IBEW and IUOE bargaining unitsItem_1_Business
f5-10k / GLM-5.3-flash-HTML		New four-year labor agreements entered with the IBEW and IUOE during Q2–Q3 2003 covering eleven bargaining units, approximately 70% of the affected workforces. Terms include no year-one wage increase, 3.5% increases in years two and three, 3.25% in year four, a pension supplement, more flexible work rules and employees bearing a greater share of future medical benefit cost increases. CILCO's separate IBEW agreement expires July 1, 2004.
2003-12-31acquisition_additionannounced2004-02-022004-12-31Illinois, United StatesIllinois Power Company (to operate as AmerenIP)business_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Definitive agreement with Dynegy signed February 2, 2004 (subsequent event) to acquire Illinois Power and Dynegy's 20% interest in EEI; total transaction value ~$2.3B including ~$1.8B assumed debt and preferred stock. Completion expected by end of 2004, subject to ICC, SEC, FERC, FCC and Hart-Scott-Rodino approvals. No Illinois Power employee count is disclosed in this filing; ~590,000 electric and 415,000 gas customers would be added.
2003-12-31voluntary_separationcompleted5502002-01-012003-06-30United StatesUE, CIPS, Genco, and other Ameren companiesUSD 75 (millions)restructuring_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Charge recorded in 2002; approximately 550 employees voluntarily retired and left in early 2003. MD&A frames the program as a 2003 cost-reduction initiative reducing staffing by over 500 people. Charge breakdown: UE $51M, CIPS $14M, Genco $8M, other $2M.
2003-12-31acquisition_additioncompleted8622003-01-312003-01-31Illinois, United StatesCILCORP / CILCO — electric and natural gas utility operationsbusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		CILCORP acquired from AES on 2003-01-31 for ~$1.4B total; CILCORP employed 862 (CILCO 855) at year-end 2003. Employees included in Ameren consolidated headcount from acquisition date.
2003-12-31acquisition_additionannounced2004-02-022004-12-31Illinois, United StatesIllinois Power — electric and natural gas transmission and distributionsubsequent_events
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Agreement with Dynegy to purchase Illinois Power stock and 20% of EEI for ~$2.3B total transaction value; employee headcount for Illinois Power not disclosed; expected close by end of 2004 subject to regulatory approvals
2003-12-31voluntary_separationcompleted5002003-01-012003-12-31United StatesCorporate and Operating CompaniesUSD 75 (millions)MD&A
f5-10k / Qwen3.6-27B-Q8_0		Voluntary retirement program initiated in early 2003 reduced staffing levels by over 500 people. Pre-tax charge of $75 million recorded in 2002 for special termination benefits.
2003-09-30voluntary_separationcompletedMissouri and IllinoisAmeren consolidatedMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Voluntary employee retirement program implemented in early 2003; cited as a driver of lower labor costs in 2003 results. No headcount or charge amount quantified.
2003-09-30othercompleted23%2003-10-012003-10-01IllinoisCILCO generation operations transferred to AERGother
f5-10q / GLM-5.3-flash-fp4-HTML		In October 2003, CILCO transferred approximately 1,100 MW of generating facilities to wholly-owned subsidiary AERG; approximately 23% of CILCO's employees were transferred to AERG as part of the transaction. Internal transfer between entities under common control; no gain or loss recognized.
2003-09-30othercompleted70%2003-09-30Missouri and IllinoisUE (six units), CIPS (one unit), Genco (two units)MD&A
f5-10q / GLM-5.3-flash-fp4-HTML		New four-year labor agreements entered with IBEW and IUOE during second and third quarters of 2003 covering eleven bargaining units and approximately 70% of Ameren's workforce; terms include no year-one wage increase, 3.5% increases in years two and three, 3.25% in year four, a pension supplement, more flexible work rules, and employees paying a greater share of future benefit cost increases.
2003-09-30othercompleted23%2003-10-032003-10-03Illinois, United StatesElectric generation operations (CILCO)MD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Approximately 23% of CILCO's employees transferred to AERG upon transfer of Duck Creek, E.D. Edwards, and Sterling Avenue generating facilities (~1,100 MW). Net book value of transferred assets ~$378 million; no gain or loss recognized as transfer between entities under common control.
2003-09-30othercompletedUnited StatesUE, CIPS, Genco (eleven bargaining units)MD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		New four-year labor agreements entered during Q2 and Q3 2003 covering ~70% of Ameren's workforce. Terms: no wage increase year one; 3.5% increases years two and three; 3.25% year four. Includes pension supplement, flexible work rules, and increased employee share of medical benefit cost increases.
2003-09-30voluntary_separationcompletedUnited StatesAmeren (enterprise-wide)MD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Referenced as a driver of lower labor costs in Q3 2003 and lower O&M expenses. No employee count or charge disclosed in this filing.
2003-09-30voluntary_separationcompleted2003-01-01United StatesCorporate / OperationsMD&A
f5-10q / Qwen3.6-27B-Q8_0		Voluntary retirement program implemented in early 2003 resulted in lower labor costs. Specific headcount not disclosed.
2003-09-30acquisition_additioncompleted2003-01-31IllinoisUtility Operationsbusiness_combinations_footnote
f5-10q / Qwen3.6-27B-Q8_0		Acquisition of CILCORP completed January 31, 2003. Specific headcount added not disclosed.
2003-09-30restructuringcompleted23%2003-10-03IllinoisGenerationother
f5-10q / Qwen3.6-27B-Q8_0		CILCO transferred generation assets to AERG. Approximately 23% of CILCO's employees were transferred to AERG.
2003-06-30voluntary_separationcompleted5502002-12-31United StatesCompany-wideMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Voluntary retirement program announced in late 2002 was accepted by approximately 550 employees; lower labor costs from the program reduced operations and maintenance expense in 2003
2003-06-30plant_closurecompleted2002-12-31United StatesGenerationMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Operations suspended at a 1940s-era generating plant to reduce operating costs; no employee count disclosed
2003-06-30otherin_progress52%2003-04-01United StatesIBEW and IUOE bargaining units (11 units)MD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Labor agreements for eleven bargaining units covering 52% of the workforce expired between April 1 and July 1, 2003; tentative agreements reached in July 2003 with seven units expiring in 2006, with ratification pending for some units
2003-06-30otherin_progress29%2003-04-01United StatesThree remaining IBEW/IUOE bargaining unitsMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Wages and work rules still under negotiation with three bargaining units representing approximately 29% of the workforce
2003-06-30acquisition_additioncompleted2003-01-31IllinoisCILCORP / AmerenCILCOUSD 1,400 (millions)business_combinations_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		Acquisition of CILCORP completed January 31, 2003 added utility businesses serving approximately 200,000 electric and 205,000 gas customers; no employee headcount disclosed
2003-06-30voluntary_separationcompleted5502002-12-31United StatesEnterprise-wideMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Program announced in late 2002 as a cost-mitigation action; accepted by approximately 550 employees.
2003-06-30acquisition_additioncompleted2003-01-312003-01-31Illinois, United StatesUtility Operations (AmerenCILCO)business_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of CILCORP (parent of Central Illinois Light Company) completed January 31, 2003; no employee headcount added disclosed.
2003-06-30acquisition_additioncompleted2003-02-042003-02-04United StatesNon-regulated generation (AmerenEnergy Medina Valley Cogen)business_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of AES Medina Valley Cogen (No. 4), LLC completed February 4, 2003; no employee headcount added disclosed.
2003-06-30otherin_progress52%2003-04-01United StatesEnterprise-wide (IBEW and IUOE bargaining units)MD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Agreements expired between April 1 and July 1, 2003. Tentative agreements reached with seven units in July 2003; three units (~29% of workforce) still negotiating wages and work rules.
2003-06-30voluntary_separationcompleted5502002-12-312003-06-30United StatesAll segmentsMD&A
f5-10q / Qwen3.6-27B-Q8_0		Voluntary retirement program accepted by approximately 550 employees, announced late 2002.
2003-06-30otherin_progress29%2003-07-01United StatesUnion-represented workforceMD&A
f5-10q / Qwen3.6-27B-Q8_0		Negotiations ongoing with three bargaining units representing approximately 29% of workforce.
2003-03-31voluntary_separationin_progress5502002-12-31United States (Missouri and Illinois service territory)Company-wideMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Voluntary retirement program announced in late 2002; approximately 550 employees accepted. No completion date or associated charge disclosed.
2003-03-31voluntary_separationin_progress5502002-12-31United StatesAllMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Voluntary retirement program accepted by approximately 550 employees; announced in late 2002 as part of cost-mitigation measures. No severance charge or completion date disclosed.
2003-03-31acquisition_additioncompleted2003-01-312003-01-31United States (Illinois)Utility Operationsbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of CILCORP (parent of Central Illinois Light Company) completed January 31, 2003; no employee headcount added disclosed.
2003-03-31acquisition_additioncompleted2003-02-042003-02-04United States (Texas)Non-rate-regulated generationbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of AES Medina Valley Cogen (No. 4), LLC (40 MW gas-fired plant) completed February 4, 2003; no employee headcount added disclosed.
2003-03-31voluntary_separationcompleted5502002-12-31MD&A
f5-10q / Qwen3.6-27B-Q8_0		Voluntary retirement program accepted by approximately 550 employees, announced in late 2002.
2002-12-31voluntary_separationcompleted2002-12Item_1_Business
f5-10k / GLM-5.3-flash-HTML		Voluntary retirement program offered in December 2002. The December 10, 2002 Form 8-K reported the program's results and a related fourth-quarter after-tax earnings charge. Participant count and charge amount are contained in incorporated-by-reference financial statement notes (Note 9) and are not stated in this filing.
2002-12-31plant_closurecompleted2002-12IllinoisAmerenEnergy Generating Company — Meredosia coal-fired unitsother
f5-10k / GLM-5.3-flash-HTML		Two coal-fired generating units totaling approximately 126 MW at the Meredosia facility were mothballed in December 2002. The December 10, 2002 Form 8-K also reported generating plant closure information with a related fourth-quarter after-tax charge; the filing does not state an employee impact or charge amount, and it is not confirmed whether the 8-K closure item and the Meredosia mothballing are the same event.
2002-12-31acquisition_additioncompleted2003-01-31IllinoisCILCORP Inc. / Central Illinois Light Company (AmerenCILCO)Item_1_Business
f5-10k / GLM-5.3-flash-HTML		Acquisition of CILCORP from The AES Corporation completed January 31, 2003 (stock purchase agreement dated April 28, 2002), adding the AmerenCILCO rate-regulated electric and gas utility businesses. The acquired entity's employee headcount is not disclosed in this filing; the transaction closed after the December 31, 2002 fiscal year-end and will first affect consolidated headcount in 2003.
2002-12-31acquisition_additioncompleted2003-02-04IllinoisAES Medina Valley Cogen (No. 4), LLC — 40 MW gas-fired cogeneration plant (renamed AmerenEnergy Medina Valley Cogen (No. 4), LLC)Item_1_Business
f5-10k / GLM-5.3-flash-HTML		Acquisition from The AES Corporation completed February 4, 2003, adding a 40 MW gas-fired cogeneration plant to AmerenEnergy Resources Company. The acquired entity's employee headcount is not disclosed; the transaction closed after the December 31, 2002 fiscal year-end.
2002-12-31voluntary_separationcompleted2002-12-012002-12-31United StatesNot specifiedItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Voluntary retirement program offered in December 2002; results and related Q4 after-tax charge referenced in Form 8-K dated December 10, 2002. Specific employee count and charge amount are in Note 9 of the 2002 Annual Report, incorporated by reference but not reproduced in this filing.
2002-12-31acquisition_additioncompleted2002-04-282003-01-31United States (Illinois)AmerenCILCO — electric and gas utility operationssubsequent_events
f5-10k / MiMo-V2.6-Flash-fp8-HTML		CILCORP Inc. acquisition completed January 31, 2003 (subsequent to fiscal year-end). Total purchase price approximately $1.4 billion. No employee headcount for CILCORP/CILCO disclosed in this filing.
2002-12-31acquisition_additioncompleted2002-04-282003-02-04United States (Illinois)AmerenEnergy Resources Company — gas-fired generationsubsequent_events
f5-10k / MiMo-V2.6-Flash-fp8-HTML		AES Medina Valley Cogen (No. 4) LLC acquisition completed February 4, 2003 (subsequent to fiscal year-end). 40 MW gas-fired plant. No employee headcount disclosed.
2002-12-31voluntary_separationcompleted2002-12Item_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Voluntary retirement program offered in December 2002. Specific headcount and charge details referenced in Notes 9 and 14 of the Consolidated Financial Statements.
2002-12-31voluntary_separationcompleted5502002-12-312003-03-31United StatesAmeren consolidatedUSD 75 (millions)restructuring_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Voluntary retirement program offered to approximately 1,000 of 7,400 employees; 550 accepted. Charge primarily special termination benefits under pension and post-retirement plans. Most employees to depart by March 2003. Pretax charge $75M ($47M net of taxes).
2002-12-31plant_closurecompleted2002-12-31Venice, Illinois, United StatesAmerenUE — rate-regulated electric generationUSD 17 (millions)restructuring_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Retirement of 343 MW rate-regulated capacity at Venice, IL plant combined with temporary suspension of two coal-fired units (126 MW) at Meredosia, IL; combined charge $17M pretax ($11M net of taxes). Employee headcount not separately disclosed.
2002-12-31acquisition_additioncompleted2003-01-312003-01-31Illinois, United StatesAmerenCILCO (Central Illinois Light Company)subsequent_events
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquisition of CILCORP Inc. from AES completed January 31, 2003. Purchase price ~$1.4B. Employee headcount added not disclosed. CILCO serves ~200,000 electric and ~205,000 gas customers.
2002-12-31acquisition_additioncompleted2003-02-042003-02-04United StatesAmerenEnergy Resources Companysubsequent_events
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquisition of AES Medina Valley Cogen (No. 4), LLC (40 MW gas-fired plant) completed February 4, 2003. Employee headcount not disclosed.
2002-12-31voluntary_separationcompleted5502002-12-012003-03-31United StatesAll segmentsUSD 75 (millions)restructuring_footnote
f5-10k / Qwen3.6-27B-Q8_0		Voluntary retirement program offered to approx. 1,000 employees; 550 accepted. Charge includes special termination benefits.
2002-12-31plant_closurecompleted2002-12-01IllinoisAmerenUEUSD 17 (millions)restructuring_footnote
f5-10k / Qwen3.6-27B-Q8_0		Retirement of 343 MW Venice plant and suspension of two units at Meredosia plant. Charge includes capacity reductions and related severance.
2002-09-30voluntary_separationannounced2002-11-04United States (Missouri/Illinois service territories)Company-wide; management employees subject to 2003 wage freezesubsequent_events
f5-10q / GLM-5.3-flash-fp4-HTML		Voluntary retirement program offered to ~1,000 of 7,400 employees; expected 300-500 voluntary retirements with a one-time after-tax Q4 2002 charge estimated between $30 million and $50 million. Also announced limits on contributions and increased retiree contributions for certain retiree medical plans and a wage-increase freeze for management employees beginning 2003; possible involuntary severance program under consideration.
2002-09-30voluntary_separationannounced1,0002002-11-04United StatesAll functionssubsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Program offered to approximately 1,000 of 7,400 employees. Expected one-time after-tax charge of $30M-$50M in Q4 2002, based on 300-500 expected voluntary retirements. Also announced limits on retiree medical contributions and a 2003 wage-increase freeze for management employees.
2002-09-30acquisition_additionin_progress2002-04-282003-03-31United States (Illinois)Regulated electric and natural gas distribution (CILCO)business_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Pending acquisition of CILCORP Inc. (parent of Central Illinois Light Company) for approximately $1.4 billion; no headcount figure disclosed for the acquired workforce.
2002-09-30voluntary_separationannounced2002-11-042002-12-31United StatesAll segmentsUSD 40 (millions)subsequent_events
f5-10q / Qwen3.6-27B-Q8_0		Voluntary retirement program offered to approx. 1,000 of 7,400 employees. Expected after-tax charge $30M-$50M based on 300-500 retirements. Charge expected in Q4 2002.
2000-12-31restructuringcompleted2000-05-012000-05-01IllinoisAmerenCIPS electric generation operationsItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Approximately 45% of AmerenCIPS employees transferred to Generating Company as part of the May 1, 2000 asset transfer under the Illinois Law; internal reorganization with no change to consolidated headcount
2000-12-31voluntary_separationcompleted4001998-07-011999-06-30United StatesAll segmentsUSD 25 (millions)MD&A
f5-10k / Qwen3.6-27B-Q8_0		Targeted Separation Plan (TSP) announced in July 1998 to eliminate approximately 400 positions by mid-1999. Pretax charge of $25 million recorded in 1998.
2000-12-31acquisition_additioncompleted45%2000-05-012000-05-01IllinoisGenerating CompanyItem_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Approximately 45% of AmerenCIPS' employees transferred to Generating Company on May 1, 2000.
2000-09-30voluntary_separationcompletedMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Non-recurring charge for a targeted employee separation plan cited among items affecting earnings; no employee count or charge amount disclosed.
2000-09-30divestiture_reductioncompleted2000-05-012000-05-01IllinoisAmerenCIPS electric generationother
f5-10q / GLM-5.3-flash-fp4-HTML		Approximately 45% of AmerenCIPS employees transferred to nonregulated AmerenEnergy Generating Company along with generating assets; internal restructuring under Illinois law, no headcount figure disclosed.
2000-09-30othercompleted2000-08-01Collective bargainingother
f5-10q / GLM-5.3-flash-fp4-HTML		Remaining collective bargaining units representing approximately 19% of union employees ratified the Company's last, best and final offer in August 2000; contract term expires 2003.
2000-09-30othercompleted2000-01-01Collective bargainingother
f5-10q / GLM-5.3-flash-fp4-HTML		Contracts with bargaining units representing approximately 21% of union employees ratified in 2000 with terms expiring in 2003.
2000-09-30othercompleted2000-08United StatesOperations (union workforce)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Remaining collective bargaining units, representing approximately 19% of the Registrant's union employees, ratified the Company's last, best and final offer for a new contract with a term expiring in 2003.
2000-09-30othercompleted2000United StatesOperations (union workforce)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		New contracts with bargaining units representing approximately 21% of union employees ratified during 2000, terms expiring in 2003; exact ratification month not disclosed.
2000-09-30othercompleted2000-05-012000-05-01IllinoisAmerenCIPS electric generation operationsother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Approximately 45% of AmerenCIPS employees transferred to the newly created nonregulated Generating Company as part of the Illinois restructuring transaction; no absolute headcount disclosed and no change to consolidated headcount.
2000-09-30voluntary_separationin_progressUnited StatesCompany-wideMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		MD&A cites non-recurring charges for a targeted employee separation plan among factors affecting earnings; no employee count, charge amount, or timing disclosed. Related narrative describes employee separation packages among cost-reduction alternatives.
2000-09-30othercompleted45%2000-05-012000-05-01IllinoisGenerating Company (Nonregulated)MD&A
f5-10q / Qwen3.6-27B-Q8_0		Approximately 45% of AmerenCIPS' employees were transferred to Generating Company as part of the transfer of electric generating assets.
2000-09-30othercompleted2000-08-012000-08-01United StatesUnion Employeesrestructuring_footnote
f5-10q / Qwen3.6-27B-Q8_0		Remaining collective bargaining units representing approx 19% of union employees ratified new contract expiring in 2003.
2000-06-30voluntary_separationcompletedMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Non-recurring charges were recorded for a targeted employee separation plan; the filing does not disclose the number of employees affected or the charge amount.
2000-06-30othercompleted2000-05-012000-05-01IllinoisAmerenCIPS electric generationother
f5-10q / GLM-5.3-flash-fp4-HTML		Approximately 45% of AmerenCIPS employees were transferred to the new nonregulated affiliate AmerenEnergy Generating Company as part of the transfer of generating assets; an internal reorganization with no net headcount change at the registrant level.
2000-06-30otherannounced2000-07-272000-08-25Union-represented employeesother
f5-10q / GLM-5.3-flash-fp4-HTML		Subsequent event: after bargaining, the registrant submitted a last, best and final contract offer to the bargaining unit representing roughly 19% of union employees; the unit had until August 25, 2000 to ratify. Outcome and impact not predictable per the filing.
2000-06-30othercompleted2000-01-01Union-represented employeesother
f5-10q / GLM-5.3-flash-fp4-HTML		New collective bargaining contracts covering approximately 21% of bargaining unit employees were ratified in 2000 with terms expiring in 2003.
2000-06-30othercompleted2000-05-012000-05-01IllinoisElectric generation (AmerenCIPS)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Internal reorganization under Illinois restructuring law: approximately 45% of AmerenCIPS' employees transferred to the new nonregulated Generating Company. Percentage is of AmerenCIPS workforce, not total company; absolute count not disclosed. Also described in MD&A; sourced here to avoid duplication.
2000-06-30otherannounced2000-07-272000-08-25United StatesUnion-represented workforce (approximately 19% of union employees)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Post-quarter labor event: last, best and final contract offer submitted to the bargaining unit representing most of ~19% of union employees; unit has until 2000-08-25 to notify of ratification. Filer unable to predict outcome or financial impact.
2000-06-30otherin_progressUnited StatesEnterpriseMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		MD&A cites a non-recurring charge for a targeted employee separation plan as an earnings driver; no employee count, charge amount, or timing disclosed. Related narrative also references employee separation packages among cost-reduction alternatives.
2000-06-30otherin_progress45%2000-05-01IllinoisElectric GenerationMD&A
f5-10q / Qwen3.6-27B-Q8_0		Approximately 45% of AmerenCIPS' employees were transferred to Generating Company as part of the transfer of electric generating assets.
2000-06-30otherin_progress2000-07-272000-08-25restructuring_footnote
f5-10q / Qwen3.6-27B-Q8_0		Registrant submitted last, best and final offer to bargaining unit representing approx 19% of union employees. Ratification decision due by Aug 25, 2000.
2000-03-31voluntary_separationcompletedMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Non-recurring charge recorded for a targeted employee separation plan; no affected-employee count or charge amount disclosed in this filing.
2000-03-31divestiture_reductionannounced2000-05-012000-05-01IllinoisAmerenCIPS electric generationsubsequent_events
f5-10q / GLM-5.3-flash-fp4-HTML		On May 1, 2000 AmerenCIPS transferred its generating assets (~2,900 MW) to nonregulated AmerenEnergy Generating Company; approximately 45% of AmerenCIPS employees were transferred as part of the transaction. No absolute headcount disclosed.
2000-03-31otherannounced45%2000-05-012000-05-01Illinois, United StatesAmerenCIPS electric generating operationsother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Approximately 45% of AmerenCIPS' employees transferred to AmerenEnergy Generating Company as part of the May 1, 2000 asset transfer under Illinois restructuring law. Absolute headcount not disclosed.
2000-03-31voluntary_separationcompletedMD&A
f5-10q / Qwen3.6-27B-Q8_0		Filing mentions 'non-recurring charges for a targeted employee separation plan' affecting earnings, but does not disclose the number of employees affected or the specific charge amount in this section.
2000-03-31restructuringannounced45%2000-05-01IllinoisGenerating Operationssubsequent_events
f5-10q / Qwen3.6-27B-Q8_0		On May 1, 2000, AmerenCIPS transferred generating assets to a new nonregulated subsidiary. Approximately 45% of AmerenCIPS' employees were transferred as part of this transaction. This is a subsequent event relative to the March 31, 2000 quarter-end.
1999-12-31voluntary_separationcompleted4001998-07USD 25 (millions)restructuring_footnote
f5-10k / GLM-5.3-flash-HTML		Targeted Separation Plan (TSP): separation packages offered July 1998 to employees whose positions were eliminated; approximately 400 positions eliminated by mid-1999 via the TSP plus a hiring freeze. Multi-year program — charge of $25 million pretax ($15 million after tax) recorded in Q3 1998; position eliminations completed during fiscal 1999 and reduced 1999 operating expenses by approximately $22 million.
1999-12-31otherin_progress2,0001999-07Item_1_Business
f5-10k / GLM-5.3-flash-HTML		Labor dispute following July 1999 expiration of agreements with IBEW Locals 1439, 309, 649 and 1455, collectively representing approximately 2,000 employees, not renewed. Last, best and final offer to Locals 1439, 309 and 649 submitted February 2, 2000 and rejected; Company implemented the noneconomic portion of the offer effective March 6, 2000 (after fiscal year-end). Negotiations with Local 1455 still ongoing at filing; economic terms unresolved. Employee count is approximate.
1999-12-31othercompleted1999Item_1_Business
f5-10k / GLM-5.3-flash-HTML		New collective bargaining agreements covering approximately 60% of union-represented employees (union-represented share is ~70% of workforce) ratified in 1999, with terms expiring in 2002. Absolute headcount not disclosed; percentage is of the union-represented subgroup, not of total workforce.
1999-12-31restructuringcompleted4001998-07-011999-06-30United StatesCompany-wideUSD 25 (millions)MD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Targeted Separation Plan announced July 1998; $25M pretax charge recorded Q3 1998 (prior year). Approximately 400 positions eliminated by mid-1999 via hiring freeze and TSP; ongoing cost savings of ~$22M realized in FY1999.
1999-12-31otherin_progress2,0002000-02-02United StatesIBEW Locals 1439, 309, 649 (representing approximately 2,000 employees)Item_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Expired 1999 labor agreements not renewed with IBEW Locals 1439, 309, 649 and 1455 (~2,000 employees). Last best and final offer rejected Feb 2, 2000; noneconomic terms implemented Mar 6, 2000. Negotiations with Local 1455 ongoing. Subsequent-event labor dispute.
1999-12-31voluntary_separationcompleted4001998-07-011999-06-30United StatesCorporateUSD 25 (millions)MD&A
f5-10k / Qwen3.6-27B-Q8_0		In 1998, the Company announced plans to eliminate approximately 400 employee positions by mid-1999 through a hiring freeze and a targeted separation plan (TSP). A nonrecurring, pretax charge of $25 million was recorded in the third quarter of 1998 representing costs incurred to implement the TSP.
1999-09-30otherin_progressMissouri and IllinoisMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Registrant is negotiating with many of its major collective bargaining units to manage labor costs and practices; no employee counts or charges disclosed.
1999-06-30voluntary_separationcompletedMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		MD&A cites a charge for a targeted employee separation plan as a factor in 12-month results ended June 30, 1999; no headcount or charge amount disclosed in this filing.
1999-06-30voluntary_separationin_progressMissouri and IllinoisRegistrant-wideMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		MD&A cites a charge for a targeted employee separation plan as a driver of the $44 million increase in other operations expenses for the 12 months ended June 30, 1999; no employee count, charge amount, or timing disclosed.
1999-06-30otherin_progressMissouri and IllinoisOperations (IBEW and IUOE bargaining units)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Active labor negotiations with IBEW and IUOE; collective bargaining agreements extended to facilitate negotiations. Impact on financial condition, results of operations or cash flows stated as unpredictable.
1999-06-30otherin_progress1999-04-01IllinoisAmerenCIPS labor relationsother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Unions petitioned the D.C. Circuit in April 1999 for review of the NLRB's August 1998 decision upholding the lawfulness of AmerenCIPS's 1993 lockout; litigation matter, no current-period headcount impact disclosed.
1999-06-30voluntary_separationcompletedMD&A
f5-10q / Qwen3.6-27B-Q8_0		Charge for targeted employee separation plan included in other operating expenses for the 12-month period ended June 30, 1999.
1999-03-31voluntary_separationin_progressUnited StatesOperationsMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Targeted employee separation plan cited as a driver of higher other operations expenses in the 12 months ended 1999-03-31; no employee count, charge amount, or timing disclosed in this filing.
1999-03-31voluntary_separationcompletedMD&A
f5-10q / Qwen3.6-27B-Q8_0		Filing mentions a 'charge for a targeted employee separation plan' affecting 12-month operating expenses, but does not disclose the number of employees affected or the specific charge amount.
1998-12-31voluntary_separationin_progress4001998-031999-06-30Company-wide (Missouri and Illinois)USD 25 (millions)restructuring_footnote
f5-10k / GLM-5.3-flash-HTML		Targeted Separation Plan (TSP): in March 1998 the Company announced plans to eliminate approximately 400 positions by mid-1999 through a hiring freeze combined with the TSP; separation packages were offered in July 1998. Pre-tax charge of $25 million recorded in Q3 1998 ($15 million after tax, $0.11 per share); remaining TSP liability of $14 million at December 31, 1998. Position eliminations (excluding the charge) lowered operating expenses roughly $15 million in 1998, with $20-25 million in annual savings expected thereafter. Completion date approximated from 'by mid-1999' disclosure.
1998-12-31voluntary_separationin_progress4001998-03-011999-06-30United StatesCompany-wideUSD 25 (millions)MD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Announced March 1998 to eliminate ~400 positions by mid-1999 via hiring freeze and voluntary separation packages offered July 1998. Pre-tax charge of $25M recorded in Q3 1998 ($15M after tax, $0.11/share). Remaining liability at 12/31/98 was $14M. Expected annual expense savings of $20-25M thereafter.
1998-12-31voluntary_separationcompleted4001998-031999-06-30United StatesCorporate and AdministrativeUSD 25 (millions)MD&A
f5-10k / Qwen3.6-27B-Q8_0		Company announced plans to eliminate approximately 400 employee positions by mid-1999 through a hiring freeze and targeted separation plan (TSP). Separation packages offered in July 1998. Pre-tax charge of $25 million recorded in Q3 1998.
1998-09-30voluntary_separationin_progress4001998-03-011999-06-30Missouri and IllinoisCompany-wideUSD 25 (millions)MD&A
f5-10q / GLM-5.3-flash-fp4-HTML		One-time pretax charge of $25 million recorded in Q3 1998, reducing earnings $15 million (11 cents per share); positions to be eliminated via hiring freeze and targeted separation plan, expected to cut operating expenses $10-15 million in 1998 and $20-25 million annually thereafter.
1998-09-30othercompletedIllinoisAmerenCIPSother
f5-10q / GLM-5.3-flash-fp4-HTML		NLRB three-member panel issued a decision on 1998-08-27 favorable to AmerenCIPS regarding unfair labor practice charges by two unions related to the company's 1993 lockout; unions expected to seek reconsideration.
1998-09-30restructuringin_progress4001998-031999-06-30United StatesEnterprise-wideUSD 25 (millions)MD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		One-time pretax charge recorded in Q3 1998; reduced earnings $15M (11 cents/share). Positions to be eliminated via hiring freeze and separation packages offered July 1998; expected annual expense savings of $20-25M. Corroborated in Note 7. Filer states approximately 400 positions; completion stated as mid-1999.
1998-09-30restructuringin_progress4001998-03-011999-06-30USD 25 (millions)MD&A
f5-10q / Qwen3.6-27B-Q8_0		Announced March 1998 plan to eliminate approx 400 positions by mid-1999 via hiring freeze and targeted separation plan. $25M pretax charge recorded in Q3 1998.
1998-06-30voluntary_separationannounced4001998-03-011999-06-30Missouri and IllinoisOther operating expenses reduction programMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Registrant plans to eliminate approximately 400 positions by mid-1999 via hiring freeze and targeted voluntary separation plan; separation packages offered July 1998; charge expected in Q3 1998 but not yet estimable. Announcement date given only as March 1998.
1998-06-30voluntary_separationin_progress4001998-03-011999-06-30United StatesOther operating expenses / corporate functionsMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Announced March 1998: plans to eliminate approximately 400 positions by mid-1999 via hiring freeze and targeted voluntary separation plan; separation packages offered July 1998. Charge to earnings expected in Q3 1998 but not yet estimable. Announcement date approximate to month.
1998-06-30voluntary_separationannounced4001998-03-011999-06-30MD&A
f5-10q / Qwen3.6-27B-Q8_0		Plan to eliminate approximately 400 positions by mid-1999 through hiring freeze and voluntary separation plan. Separation packages offered in July 1998. Charge expected in Q3 1998 once acceptances are known.
1998-03-31voluntary_separationannounced4001998-03-011999-06-30Missouri and IllinoisOther operating expenses reduction programMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Registrant announced plans in March 1998 to cut other operating expenses, eliminating roughly 400 positions by mid-1999 via a hiring freeze and a targeted voluntary separation plan; charge expected in Q3 1998 once acceptances are known, but amount not yet estimable.
1998-03-31voluntary_separationin_progress4001998-031999-06United States (Missouri and Illinois operations)Company-wide; part of broader other operating expense reduction programMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Program combines a hiring freeze with a targeted voluntary separation plan to eliminate roughly 400 positions by mid-1999. Filer expects a charge in Q3 1998 once participation is known but states it cannot yet estimate the amount.
1998-03-31voluntary_separationannounced4001998-03-011999-06-30MD&A
f5-10q / Qwen3.6-27B-Q8_0		Plans to eliminate approximately 400 employee positions by mid-1999 through hiring freeze and targeted voluntary separation plan. Charge expected in Q3 1998.
1997-12-31voluntary_separationcompletedMD&A
f5-10k / Qwen3.6-27B-Q8_0		1995 other operations expenses increased due to costs related to a voluntary separation program.