Fundamentals - DTE Energy (DTE)

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

No geographic segment data found.

Business Unit / Product Segments

Major Customers (% of Revenue)

No 10-Q data

Operational KPIs

Nuclear Decommissioning Trust (aum)

Purchase commitments (backlog)

No 10-K data

Production Volume (boe_production)

No 10-K data

Peak Demand (capacity)

Electric customers (customers)

Electric customers (customers_served)

Carbon Emissions Reduction Goal (emissions_co2)

No 10-Q data

Leased rail cars (fleet_size)

No 10-Q data

Gas transportation volume (gas_production)

Summer net rated capability (generation_capacity)

Steam heating sales volume (generation_volume)

Employees (headcount)

Net Undeveloped Acreage (net_acreage)

Oil Derivative Volume (oil_production)

No 10-K data

Coal Contracts (orders_received)

No 10-Q data

Active gas meters (other)

No 10-Q data

Alternate fuels tax credits (other)

No 10-Q data

Available liquidity (other)

No 10-K data

Average NYMEX oil price (other)

No 10-K data

Average coal cost (other)

No 10-Q data

Average fuel and purchased power unit cost (other)

No 10-K data

Average fuel cost (other)

No 10-Q data

Average fuel unit cost (other)

Average generation cost (other)

No 10-K data

Average generation unit cost (other)

Average length of service (other)

No 10-Q data

Average power unit cost (other)

No 10-Q data

Average purchased power cost (other)

Average purchased power unit cost (other)

No 10-K data

Average realized gas price (other)

No 10-Q data

Average unit cost (other)

No 10-K data

Barnett shale hedge price (other)

No 10-K data

Barnett shale producing wells (other)

No 10-Q data

Book value per share (other)

CCR and ELG capital expenditures (other)

No 10-K data

CCR compliance cost estimate (other)

No 10-K data

Canadian dollar forward volume (other)

No 10-K data

Capital expenditure program (other)

No 10-K data

Capital expenditures (other)

Capital expenditures expended (other)

No 10-K data

Capital expenditures incurred (other)

No 10-K data

Capital investment plan (other)

No 10-K data

Capital structure (other)

No 10-K data

Capital structure - Common equity (other)

No 10-K data

Capital structure - Long-term debt (other)

No 10-K data

Capital structure - Preferred stock (other)

No 10-K data

Capital structure - common equity (other)

No 10-K data

Capital structure - long-term debt (other)

No 10-K data

Capital structure - preferred stock (other)

No 10-K data

Carbon emissions derivative volume (other)

No 10-K data

Circuit miles of distribution lines (other)

No 10-Q data

Coal combustion residuals capex (other)

No 10-Q data

Coal contracted (other)

No 10-Q data

Coal contracts (other)

No 10-Q data

Coal generation share (other)

No 10-K data

Coal purchase contracts (other)

No 10-Q data

Coal requirements contracted (other)

No 10-Q data

Coal requirements under contract (other)

No 10-Q data

Coal shipped (other)

No 10-Q data

Coal shipped volume (other)

No 10-Q data

Coal supply contract volume (other)

No 10-Q data

Coal supply contracted (other)

No 10-Q data

Coal tons shipped (other)

No 10-Q data

Coal under contract (other)

No 10-Q data

Coal units planned for retirement (other)

No 10-K data

Coal units remaining (other)

No 10-K data

Coal units retired (other)

No 10-K data

Coke batteries (other)

No 10-K data

Coke battery plants (other)

No 10-Q data

Coke battery plants operational (other)

No 10-Q data

Commercial kWh sales change (other)

No 10-K data

Commercial kWh sales growth (other)

No 10-K data

Commercial sales growth (other)

No 10-K data

Common Shares Outstanding (other)

Common Stock Outstanding (other)

Common Stock Shares Outstanding (other)

No 10-Q data

Common Stockholders (other)

No 10-Q data

Common shares outstanding (other)

Common stock outstanding (other)

No 10-Q data

Common stock shares outstanding (other)

Counterparty credit exposure (other)

No 10-K data

Credit facility net availability (other)

No 10-K data

Cumulative Derivative Volume (other)

No 10-K data

Customer Choice deliveries (other)

No 10-K data

Customer Choice load share (other)

No 10-K data

Customer Choice lost margins (other)

No 10-K data

Customer Choice participation (other)

Customer Choice penetration (other)

No 10-K data

Customer Choice sales share (other)

No 10-Q data

Customer Choice share (other)

No 10-Q data

Customer Choice share of retail sales (other)

No 10-Q data

Customer choice sales loss (other)

No 10-Q data

Data center capacity contract (other)

No 10-Q data

Debt to capitalization ratio (other)

No 10-K data

Decommissioning trust assets (other)

No 10-K data

Derivative Contracts (other)

No 10-K data

Derivative contract volume (other)

No 10-K data

Derivative contract volumes (other)

No 10-K data

Derivative contracts outstanding (other)

No 10-K data

Detroit Edison capital expenditures (other)

No 10-K data

Distributed generation delivered (other)

No 10-Q data

Distributed generation projects completed (other)

No 10-Q data

Distribution Circuits (other)

No 10-Q data

Distribution Substations (other)

No 10-Q data

Distribution Transformers (other)

No 10-Q data

Distribution circuit miles (other)

No 10-Q data

Distribution circuits (other)

No 10-Q data

Distribution line miles (other)

No 10-Q data

Distribution substations (other)

No 10-Q data

Dividends declared per share (other)

No 10-K data

Downgrade collateral obligation (other)

No 10-K data

Earnings to fixed charges and preferred dividends ratio (other)

No 10-K data

Earnings to fixed charges ratio (other)

No 10-K data

Electric Choice deliveries (other)

No 10-Q data

Electric Choice retail sales loss (other)

No 10-K data

Electric Choice volumes (other)

No 10-K data

Electric Customer Choice deliveries (other)

No 10-Q data

Electric Customer Choice share (other)

No 10-Q data

Electric Customer Choice volumes (other)

No 10-K data

Electric capital investment plan (other)

No 10-Q data

Electric customer choice deliveries (other)

No 10-K data

Electric deliveries (other)

Electric deliveries volume (other)

No 10-Q data

Electric distribution circuit miles (other)

No 10-Q data

Electric distribution line miles (other)

No 10-Q data

Electric distribution lines (other)

No 10-Q data

Electric distribution substations (other)

No 10-Q data

Electric interconnection sales volume (other)

No 10-Q data

Electric line transformers (other)

No 10-Q data

Electric retail access share (other)

No 10-Q data

Electric retail sales loss (other)

No 10-K data

Electric retail sales volume (other)

No 10-Q data

Electric sales (other)

No 10-K data

Electric sales and deliveries (other)

No 10-K data

Electric sales by customer class (other)

No 10-Q data

Electric sales volume (other)

Electric sales volumes (other)

No 10-Q data

Electric substations (other)

No 10-Q data

Electricity Derivative Contracts (other)

No 10-K data

Electricity Derivative Volume (other)

No 10-K data

Electricity Derivatives (other)

No 10-K data

Electricity contract volume (other)

No 10-K data

Electricity deliveries (other)

No 10-K data

Electricity derivative contracts (other)

No 10-K data

Electricity derivative volume (other)

No 10-K data

Electricity derivatives (other)

No 10-K data

Electricity retail access deliveries (other)

No 10-Q data

Electricity sales (other)

No 10-K data

Electricity sales and deliveries (other)

No 10-K data

Electricity sales volume (other)

Electricity sales volumes (other)

End-user transportation volume (other)

No 10-K data

Environmental capital expenditures (other)

No 10-Q data

Estimated Total Year 2000 Costs (other)

No 10-K data

Estimated environmental expenditures through 2025 (other)

No 10-Q data

Estimated oil reference price (other)

No 10-K data

Expected cash from operations (other)

No 10-K data

Expected dividends paid (other)

No 10-K data

FTR derivative volume (other)

No 10-K data

FX contract volume (other)

No 10-K data

Floating rate debt ratio (other)

No 10-K data

Foreign Currency Derivative Volume (other)

No 10-K data

Foreign Currency Derivatives (other)

No 10-K data

Foreign Currency Exchange Contracts (other)

No 10-K data

Foreign Currency Exchange Derivative Volume (other)

No 10-K data

Foreign Currency Exchange Volume (other)

No 10-K data

Foreign currency derivative volume (other)

No 10-K data

Foreign currency derivatives (other)

No 10-K data

Foreign currency exchange contracts (other)

No 10-K data

Fuel and purchased power cost change (other)

No 10-K data

Gas Distribution Mains (other)

No 10-Q data

Gas Storage and Pipelines capital investment plan (other)

No 10-Q data

Gas Transmission Pipelines (other)

No 10-Q data

Gas active meters (other)

No 10-Q data

Gas capital investment plan (other)

No 10-Q data

Gas delivered volume (other)

No 10-Q data

Gas deliveries (other)

No 10-Q data

Gas delivery volume (other)

No 10-Q data

Gas delivery volumes (other)

No 10-Q data

Gas distribution mains (other)

No 10-Q data

Gas hedged volume (other)

No 10-K data

Gas intermediate transportation volume (other)

No 10-Q data

Gas market volume effect (other)

No 10-K data

Gas markets weather effect (other)

No 10-K data

Gas meters (other)

No 10-Q data

Gas pipeline miles (other)

No 10-Q data

Gas processing plants (other)

No 10-Q data

Gas sales and end-user transportation volume (other)

No 10-Q data

Gas sales volume (other)

No 10-Q data

Gas sales volumes (other)

No 10-Q data

Gas send-out capacity (other)

No 10-Q data

Gas service lines (other)

No 10-Q data

Gas service pipelines (other)

No 10-Q data

Gas storage capacity (other)

No 10-Q data

Gas storage fields (other)

No 10-Q data

Gas supply contract volume (other)

No 10-Q data

Gas supply from underground storage (other)

No 10-Q data

Gas throughput volume (other)

No 10-K data

Gas transmission lines (other)

No 10-Q data

Gas transmission pipelines (other)

No 10-Q data

Gas transportation volume (other)

No 10-Q data

Gas volume (other)

Gas volumes (other)

Gas volumes handled (other)

No 10-K data

Gas weather net income effect (other)

No 10-K data

Gas-fired power plants (other)

No 10-K data

Hedged Barnett gas volume (other)

No 10-K data

Hedged Barnett production (other)

No 10-K data

Industrial kWh sales change (other)

No 10-K data

Industrial kWh sales growth (other)

No 10-K data

Industrial sales growth (other)

No 10-K data

Interconnection kWh sales change (other)

No 10-K data

Interconnection sales (other)

Interconnection sales growth (other)

No 10-K data

Interest rate derivative volume (other)

No 10-K data

Intermediate transportation volume (other)

No 10-K data

Landfill gas produced (other)

No 10-Q data

Landfill gas recovery sites (other)

No 10-Q data

Landfill gas sites (other)

No 10-Q data

Landfill sites (other)

No 10-Q data

Leased rail cars (other)

No 10-Q data

Line transformers (other)

No 10-Q data

Long-term service contract revenue (other)

No 10-Q data

Low-level radioactive waste reserve (other)

No 10-Q data

Mark-to-market net asset position (other)

No 10-K data

Maximum daily send-out capacity (other)

No 10-Q data

Millennium Pipeline ownership (other)

No 10-K data

Monroe generation share (other)

No 10-Q data

Monroe plant generation share (other)

No 10-Q data

NYMEX crude oil average price (other)

No 10-K data

NYMEX oil price (other)

No 10-K data

Natural Gas Derivative Contracts (other)

No 10-K data

Natural Gas Derivative Volume (other)

No 10-K data

Natural Gas Derivatives (other)

No 10-K data

Natural gas contract volume (other)

No 10-K data

Natural gas derivative contracts (other)

No 10-K data

Natural gas derivative volume (other)

No 10-K data

Natural gas derivatives (other)

No 10-K data

Natural gas storage capacity (other)

No 10-Q data

Natural gas volume (other)

Natural gas volumes (other)

Net credit exposure (other)

No 10-K data

Net producing wells (other)

No 10-Q data

Non-regulated capital expenditures (other)

No 10-K data

Non-regulated investment cash requirements (other)

No 10-K data

Non-regulated investment expenditures (other)

No 10-K data

Non-regulated investments expended (other)

No 10-K data

Non-regulated investments incurred (other)

No 10-K data

Non-utility gas storage capacity (other)

No 10-Q data

Non-utility generation capacity (other)

No 10-Q data

Nuclear decommissioning reserve (other)

No 10-Q data

Nuclear decommissioning trust assets (other)

No 10-K data

Nuclear decommissioning trust fair value (other)

No 10-K data

Nuclear decommissioning trust funds (other)

No 10-Q data

Number of Reportable Segments (other)

Oil Derivative Contracts (other)

No 10-K data

Oil Derivatives (other)

No 10-K data

Oil derivative contracts (other)

No 10-K data

Oil derivative volume (other)

No 10-K data

Oil price full phase-out (other)

No 10-K data

Oil price phase-out threshold (other)

No 10-K data

Oil reference price (other)

No 10-K data

Open derivative volumes (other)

No 10-K data

Other kWh sales change (other)

No 10-K data

Other kWh sales growth (other)

No 10-K data

Other sales growth (other)

No 10-K data

Outstanding Shares (other)

No 10-K data

Outstanding shares (other)

No 10-K data

Overall average unit cost (other)

Peak demand (other)

No 10-Q data

Performance bonds outstanding (other)

No 10-K data

Planned capital expenditures (other)

No 10-K data

Planned capital investments (other)

No 10-K data

Power Purchased (other)

No 10-K data

Power and Industrial Projects capital investment plan (other)

No 10-Q data

Producing gas wells (other)

No 10-K data

Producing wells (other)

No 10-Q data

Production tax credits (other)

No 10-K data

Production tax credits generated (other)

Proved reserve additions (other)

No 10-Q data

Public float value (other)

No 10-Q data

Purchased power (other)

Purchased power volume (other)

No 10-Q data

REC derivative volume (other)

No 10-K data

REF facilities (other)

No 10-Q data

Rate case requested increase (other)

No 10-K data

Ratio of earnings to fixed charges (other)

No 10-Q data

Ratio of earnings to fixed charges and preferred dividends (other)

No 10-Q data

Record electrical demand (other)

No 10-K data

Renewable Energy Certificates Derivative Volume (other)

No 10-K data

Renewable Energy Certificates volume (other)

No 10-K data

Renewable gas recovery sites (other)

No 10-Q data

Requested return on equity (other)

No 10-K data

Reserve margin (other)

No 10-Q data

Residential kWh sales change (other)

No 10-K data

Residential kWh sales growth (other)

No 10-K data

Residential sales growth (other)

No 10-K data

Retail access share (other)

No 10-Q data

Retail access share of retail sales (other)

No 10-Q data

Retail access share of sales (other)

No 10-Q data

Retail open access share (other)

No 10-Q data

Retail sales lost to Choice (other)

No 10-K data

Retail sales lost to Customer Choice (other)

No 10-K data

Retail sales lost to electric choice (other)

No 10-K data

Return on average common equity (other)

Return on average equity (other)

No 10-K data

Sales between utilities growth (other)

No 10-K data

Sales volume change (other)

No 10-K data

Section 29 tax credits generated (other)

No 10-Q data

Securitization bonds (other)

No 10-Q data

Service area (other)

No 10-Q data

Service territory area (other)

No 10-K data

Shareholders (other)

No 10-Q data

Shareholders of record (other)

No 10-Q data

Shares outstanding (other)

Short-term borrowings (other)

No 10-K data

Short-term credit arrangements (other)

No 10-K data

Stock options outstanding (other)

No 10-K data

Substations (other)

No 10-Q data

Summer reserve margin (other)

No 10-Q data

Synfuel capacity sold (other)

Synfuel facilities in operation (other)

No 10-K data

Synfuel interests sold (other)

No 10-K data

Synfuel plants (other)

No 10-Q data

Synfuel plants operational (other)

No 10-Q data

Synfuel production capacity sold (other)

No 10-K data

Synfuel production facilities (other)

No 10-K data

Synfuel production plants (other)

No 10-K data

Synfuel production tax credits (other)

No 10-K data

Synfuel tax credit carryforwards (other)

No 10-K data

Synfuel tax credit phase-out price (other)

No 10-K data

Synfuel tax credit threshold (other)

No 10-K data

Synfuel tax credits generated (other)

No 10-K data

Synthetic fuel facilities (other)

No 10-K data

Synthetic fuel plants (other)

No 10-Q data

System output (other)

No 10-Q data

Tons of coal shipped (other)

No 10-Q data

Total System kWh sales change (other)

No 10-K data

Total System kWh sales growth (other)

No 10-K data

Total System sales growth (other)

No 10-K data

Total assets (other)

No 10-K data

Total electric sales (other)

No 10-Q data

Total electric sales and deliveries (other)

No 10-Q data

Total electric sales volume (other)

No 10-Q data

Total gas throughput volume (other)

No 10-Q data

Total kWh sales change (other)

No 10-K data

Total kWh sales growth (other)

No 10-K data

Total sales growth (other)

No 10-K data

Total system kWh sales change (other)

No 10-K data

Total system kWh sales growth (other)

No 10-K data

Total system sales (other)

No 10-Q data

Total system sales growth (other)

No 10-K data

Trading counterparty credit exposure (other)

No 10-K data

Transmission stations (other)

No 10-Q data

Uncollectable accounts expense (other)

No 10-K data

Uncollectible accounts expense (other)

No 10-K data

Uncollectible expense (other)

No 10-K data

Underground gas storage capacity (other)

No 10-Q data

Underground storage supply share (other)

No 10-Q data

Unfunded investment commitments (other)

No 10-K data

Value at Risk (other)

No 10-K data

Weather deviation from normal (other)

No 10-K data

Weather effect on gas markets (other)

No 10-K data

Weather effect on gross margin (other)

No 10-K data

Weather impact on gross margin (other)

No 10-K data

Wholesale sales change (other)

No 10-K data

Wholesale sales kWh change (other)

No 10-K data

Workforce Diversity (other)

No 10-Q data

Workforce diversity (other)

No 10-Q data

Workforce diversity - Minorities (other)

No 10-Q data

Workforce diversity - Women (other)

No 10-Q data

Working gas storage capacity (other)

No 10-Q data

Year 2000 Costs Expended (other)

No 10-K data

Year 2000 costs expended (other)

No 10-K data

Year 2000 integration testing progress (other)

No 10-K data

Year 2000 remediation progress (other)

No 10-K data

kWh Sales (other)

No 10-K data

kWh sales (other)

No 10-K data

kWh sales change (other)

No 10-K data

kWh sales growth (other)

No 10-K data

Proved and probable reserves (probable_reserves)

No 10-K data

Gas fuel consumption (production_volume)

Distribution circuits (properties)

No 10-Q data

Proved Reserves (proved_reserves)

Renewable energy generation capacity (renewable_capacity)

Renewable energy share (renewable_energy_pct)

No 10-Q data

Revenue, Remaining Performance Obligation, Amount (rpo)

Common Stock Shares Outstanding (shares)

Common Stock Shares Outstanding (shares_outstanding)

No 10-Q data

Service area (square_footage)

Gas volumes sold and transported (throughput)

Transmission lines (transmission_miles)

Electric sales (units_shipped)

Reserve margin (utilization_rate)

Net Producing Wells (wells_drilled)

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

Demographics

No 10-Q data

Workforce Breakdowns

No 10-Q data

HCM Metrics — Point-in-Time

No 10-Q data

HCM Metrics — Flow (Annual / YTD)

No flow HCM metrics found.

Workforce Actions

Period End	Type	Status	Affected	Announced	Expected Completion	Geography	Segment / Function	Charge	Source	Note
2025-12-31	acquisition_addition	completed		2025-08-14	2025-08-14	Michigan, United States	Electric segment — DTE Sustainable Generation (non-utility operations)	USD 216 (millions)	business_combinations_footnote f5-10k / GLM-5.3-flash-HTML	DTE Sustainable Generation closed on the purchase of a 123 MW cogeneration facility from Osaka Gas USA Corporation effective August 14, 2025 (announcement and completion dates reflect the disclosed closing date). Consideration of approximately $216 million paid in cash; this is total purchase consideration, not a severance or restructuring charge. Number of employees added through the acquisition was not disclosed.
2025-12-31	acquisition_addition	completed		2025-08-14	2025-08-14	United States — Michigan	Electric segment — DTE Sustainable Generation	USD 216 (millions)	business_combinations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Purchase of 123 MW cogeneration facility from Osaka Gas USA; headcount added not disclosed
2025-12-31	voluntary_separation	completed							MD&A f5-10k / Qwen3.6-27B-NVFP4-MTP-HTML	Filing references 'one-time costs in 2024 resulting from the voluntary separation incentive program' in the context of 2025 vs 2024 comparisons, implying the program was completed in the prior year. No specific headcount or charge for 2025 is disclosed.
2025-12-31	voluntary_separation	completed				United States	Electric and Gas Segments	USD 40 (millions)	MD&A f5-10k / Qwen3.6-27B-Q8_0	Electric segment incurred $32 million in one-time costs; Gas segment incurred $8 million in one-time costs from voluntary separation incentive program.
2025-09-30	voluntary_separation	completed							MD&A f5-10q / Qwen3.6-27B-Q8_0	MD&A references 'one-time costs in 2024 of $32 million resulting from the voluntary separation incentive program' as a comparative item explaining the current year's lower O&M expense. No current quarter voluntary separation program is disclosed.
2025-06-30	voluntary_separation	completed						USD 32 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	One-time costs in 2024 of $32 million resulting from the voluntary separation incentive program. Mentioned in 2025 MD&A as a prior-year item that did not repeat, confirming completion.
2025-06-30	voluntary_separation	completed						USD 8 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	One-time costs resulting from the voluntary separation incentive program of $8 million in the prior year that did not repeat in 2025.
2025-03-31	voluntary_separation	completed					Electric Segment	USD 31 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	One-time costs in 2024 of $31 million resulting from the voluntary separation incentive program. Mentioned in Q1 2025 MD&A as a prior-year item that did not repeat, explaining lower O&M expense.
2024-12-31	voluntary_separation	completed				United States	Electric segment	USD 32 (millions)	MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	Costs recognized in Electric segment operation and maintenance expense for FY2024; employee count not disclosed
2024-12-31	voluntary_separation	completed				United States	Gas segment	USD 8 (millions)	MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	Costs recognized in Gas segment operation and maintenance expense for FY2024; employee count not disclosed
2024-12-31	voluntary_separation	completed						USD 40 (millions)	MD&A f5-10k / Qwen3.6-27B-NVFP4-MTP-HTML	One-time costs of $32 million for DTE Electric and $8 million for DTE Gas resulting from the voluntary separation incentive program.
2024-12-31	voluntary_separation	completed						USD 40 (millions)	MD&A f5-10k / Qwen3.6-27B-Q8_0	One-time costs of $32 million in Electric segment and $8 million in Gas segment resulting from the voluntary separation incentive program.
2024-09-30	voluntary_separation	in_progress				United States	Electric	USD 32 (millions)	MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	One-time costs from a voluntary separation incentive program cited as a driver of nine-month O&M expense; no employee count or dates disclosed.
2024-09-30	voluntary_separation	in_progress				United States	Gas	USD 8 (millions)	MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	One-time costs from the voluntary separation incentive program cited as a driver of nine-month O&M expense; no employee count or dates disclosed.
2024-09-30	voluntary_separation	completed				United States	DTE Electric	USD 32 (millions)	MD&A f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	One-time costs resulting from the voluntary separation incentive program.
2024-09-30	voluntary_separation	completed						USD 32 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	One-time costs resulting from the voluntary separation incentive program included in operation and maintenance expense for the nine months ended September 30, 2024.
2024-09-30	voluntary_separation	completed					Gas	USD 8 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	One-time costs resulting from the voluntary separation incentive program included in operation and maintenance expense for the nine months ended September 30, 2024.
2024-06-30	voluntary_separation	in_progress				United States	Electric	USD 32 (millions)	MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	One-time costs of $32 million from a voluntary separation incentive program in the six months ended June 30, 2024. Number of employees affected not disclosed.
2024-06-30	voluntary_separation	in_progress				United States	Gas	USD 8 (millions)	MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	One-time costs of $8 million from a voluntary separation incentive program in the six months ended June 30, 2024. Number of employees affected not disclosed.
2024-06-30	voluntary_separation	completed				United States	Electric and Gas	USD 40 (millions)	MD&A f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	One-time costs resulting from the voluntary separation incentive program
2024-06-30	voluntary_separation	completed					Electric	USD 32 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	One-time costs resulting from the voluntary separation incentive program included in operation and maintenance expense for the six months ended June 30, 2024.
2024-03-31	voluntary_separation	in_progress				United States	Electric	USD 31 (millions)	MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	One-time costs of $31 million from a voluntary separation incentive program. No employee count or completion date disclosed.
2024-03-31	voluntary_separation	in_progress				United States	Gas	USD 8 (millions)	MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	One-time costs of $8 million from a voluntary separation incentive program. No employee count or completion date disclosed.
2024-03-31	voluntary_separation	completed		2024-03-31	2024-03-31	United States	Electric and Gas	USD 31 (millions)	MD&A f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	One-time costs resulting from the voluntary separation incentive program.
2024-03-31	voluntary_separation	completed				United States	Electric and Gas segments	USD 39 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	One-time costs of $31 million in Electric segment and $8 million in Gas segment resulting from the voluntary separation incentive program.
2023-12-31	voluntary_separation	announced		2024-01		Michigan, United States	Electric and Gas utilities and corporate support organizations; non-represented employees only		MD&A f5-10k / GLM-5.3-flash-HTML	Subsequent event announced January 2024 after fiscal year-end; also referenced in Item 1 Human Capital. Expected one-time costs of approximately $40 to $50 million in H1 2024, primarily Q1, allocated mainly to Electric and Gas segment O&M; open to certain non-represented employees who elect to exit. Employee counts not disclosed.
2023-12-31	voluntary_separation	announced		2024-01	2024-06-30	United States	Electric and gas utilities and corporate support organizations	USD 40 (millions)	subsequent_events f5-10k / MiMo-V2.6-Flash-fp8-HTML	Announced January 2024 for certain non-represented employees; expected one-time cost of $40 to $50 million, primarily in Q1 2024, allocated to operation and maintenance expense at the Electric and Gas segments; headcount not disclosed
2023-12-31	voluntary_separation	announced		2024-01		United States	Electric, Gas, and Corporate Support	USD 45 (millions)	subsequent_events f5-10k / Qwen3.6-27B-NVFP4-MTP-HTML	Announced in January 2024 for non-represented employees. Expected one-time costs of $40-$50 million in H1 2024. No specific headcount disclosed.
2023-12-31	voluntary_separation	announced		2024-01		Michigan	Electric, Gas, and Corporate Support	USD 45 (millions)	MD&A f5-10k / Qwen3.6-27B-Q8_0	Announced in January 2024 (subsequent event). Expected one-time costs of $40 to $50 million in first half of 2024. Affects non-represented employees.
2022-12-31	plant_closure	completed				Michigan, United States	Electric segment (DTE Electric) — coal-fired generation		MD&A f5-10k / GLM-5.3-flash-HTML	Five coal-fired units retired in Q3 2022; filing reports all eleven units at the Trenton Channel, River Rouge, and St. Clair facilities now retired. No employee count disclosed; Item 1 describes succession planning to support employees transitioning to new roles as coal plants retire. Remaining units: Belle River coal-to-gas conversion planned 2025-2026, Monroe retirements planned 2028 and 2035.
2022-12-31	plant_closure	completed					DTE Vantage — Reduced Emissions Fuel (REF) business		MD&A f5-10k / GLM-5.3-flash-HTML	REF projects closed as planned in 2022 after facilities exhausted eligibility for production tax credits; closure reduced segment operating revenues by $766 million. No employee headcount or severance impact disclosed.
2021-12-31	divestiture_reduction	completed		2020-10-27	2021-07-01		Gas Storage and Pipelines segment / DT Midstream		discontinued_operations_footnote f5-10k / GLM-5.3-flash-HTML	Spin-off of DT Midstream completed July 1, 2021; affected employee headcount not disclosed. Stock plan adjustments confirm employees were affected: incremental performance shares granted to employees who did not separate with DT Midstream, and performance share cancellations for employees who separated due to the spin-off.
2021-12-31	plant_closure	completed			2021-12-31	Michigan	Electric — DTE Electric fossil generation		MD&A f5-10k / GLM-5.3-flash-HTML	Six coal-fired generation units retired at Trenton Channel, River Rouge, and St. Clair facilities as part of the coal transition; River Rouge plant retired in 2021 with securitization of remaining undepreciated costs approved. No workforce reduction figures disclosed.
2021-12-31	plant_closure	completed			2021-12-31	Michigan (River Rouge site)	DTE Vantage — Steel and Petroleum Coke (pulverized coal facility)	USD 27 (millions)	other f5-10k / GLM-5.3-flash-HTML	Operations ceased December 31, 2021 after DTE Electric retired the River Rouge plant and terminated the O&M services agreement (notice given during Q2 2021). The $27 million charge is a non-cash long-lived asset impairment ($18M PP&E, $9M other noncurrent assets), not severance. Headcount impact not disclosed.
2021-12-31	plant_closure	completed			2021-12-31	United States (MI, OH, IL, TX, WI per properties table)	DTE Vantage — Environmental Controls (Reduced Emissions Fuel / REF)		Item_1_Business f5-10k / GLM-5.3-flash-HTML	REF facilities at ten sites ceased operations at the end of 2021 as tax-credit eligibility expired; REF entities also ceased to be VIEs as of December 31, 2021. Headcount impact not disclosed.
2021-12-31	plant_closure	announced			2022-12-31	Michigan	Electric — DTE Electric fossil generation		MD&A f5-10k / GLM-5.3-flash-HTML	Plans announced to retire the remaining eleven coal-fired generating units, including five units at Trenton Channel and St. Clair in 2022; Belle River units to cease coal use by 2028; Monroe units expected to be retired by 2040. No workforce figures disclosed.
2021-12-31	divestiture_reduction	completed		2020-10-27	2021-07-01	United States	Gas Storage and Pipelines (DT Midstream)		discontinued_operations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Spin-off of DT Midstream completed July 1, 2021; no employee count disclosed
2021-12-31	plant_closure	completed			2021-06-30	Michigan, United States	Electric — River Rouge power plant		restructuring_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	River Rouge plant retired in Q2 2021; associated pulverized coal facility ceased operations December 31, 2021 with $27M asset impairment
2021-12-31	plant_closure	completed			2021-12-31	Michigan, United States	DTE Vantage — Reduced Emissions Fuel (REF) facilities		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	REF facilities at ten sites ceased operations end of 2021 due to loss of tax credit eligibility; no employee count disclosed
2021-12-31	plant_closure	announced			2022-12-31	Michigan, United States	Electric — coal-fired generation (Trenton Channel and St. Clair)		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	Plans announced to retire remaining eleven coal-fired units, including five at Trenton Channel and St. Clair in 2022; no employee counts disclosed
2021-06-30	divestiture_reduction	completed		2020-10-27	2021-07-01	United States	Gas Storage and Pipelines (DT Midstream)		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	Spin-off of DT Midstream completed July 1, 2021; DTE Energy retains no ownership. Employee headcount transferred not disclosed. Historical results to be reclassified as discontinued operations in Q3 2021.
2021-06-30	plant_closure	in_progress		2021-06-30	2021-12-31	United States	Power and Industrial Projects — Steel business (pulverized coal facility at River Rouge)	USD 27 (millions)	other f5-10q / MiMo-V2.6-Flash-fp8-HTML	DTE Electric retired River Rouge plant in Q2 2021 and issued early termination notice for O&M services agreement at pulverized coal facility, effective December 31, 2021. $27M non-cash impairment recorded. Employee count affected not disclosed.
2021-03-31	divestiture_reduction	announced		2020-10-27	2021-06-30	United States	DTE Midstream (Gas Storage and Pipelines)		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	Board-authorized spin-off of DTE Midstream targeted for mid-year 2021; no employee-impact count or workforce reduction disclosed. Expected completion date reflects filer's 'mid-year 2021' statement.
2020-12-31	divestiture_reduction	announced		2020-10-27	2021		DTE Midstream (Gas Storage and Pipelines segment)		other f5-10k / GLM-5.3-flash-HTML	Board authorized management to pursue spin-off of DTE Midstream as an independent natural gas midstream company, intended as a tax-free separation; completion expected mid-2021 subject to conditions. No workforce impact or headcount figures were quantified in the filing.
2020-12-31	plant_closure	announced			2021	Michigan, United States	DTE Electric — coal-fired generation (River Rouge plant)		MD&A f5-10k / GLM-5.3-flash-HTML	Final River Rouge coal-fired unit scheduled to retire in 2021 as part of DTE's announced transition away from coal generation toward renewables and gas-fueled generation. Workforce impact not quantified in the filing.
2020-12-31	plant_closure	announced			2022	Michigan, United States	DTE Electric — coal-fired generation (Trenton Channel and St. Clair plants)		MD&A f5-10k / GLM-5.3-flash-HTML	Five additional coal-fired generating units at Trenton Channel and St. Clair scheduled to retire in 2022; filing also notes the remaining Belle River and Monroe units are expected to retire by 2040. Workforce impact not quantified in the filing.
2020-12-31	divestiture_reduction	announced		2020-10-27	2021-06-30	United States	Gas Storage and Pipelines (DTE Midstream)		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Board authorized a plan to spin off DTE Midstream as an independent company, expected completion by mid-year 2021 subject to conditions; no employee counts disclosed. Expected completion date is approximate per filing language.
2019-12-31	acquisition_addition	completed		2019-12-04	2019-12-04	Louisiana, United States	Gas Storage and Pipelines		business_combinations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Acquired for $2.74 billion; acquired business represented approximately 3% of consolidated total assets. Headcount added not disclosed.
2019-12-31	acquisition_addition	completed		2019-09-12	2019-09-12	Michigan, United States	Electric (DTE Sustainable Generation)		business_combinations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Purchase price approximately $175 million. Headcount added not disclosed.
2019-12-31	acquisition_addition	completed		2019-09-20	2019-09-20	Ohio, United States	Gas Storage and Pipelines (NEXUS, 50% equity-method interest)		business_combinations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Total consideration approximately $163 million, of which DTE Energy's portion was 50%. Headcount added not disclosed.
2019-12-31	acquisition_addition	announced		2019-12		New Jersey, United States	Power and Industrial Projects	USD 100 (millions)	MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	Purchase price of $100 million; expected to close in early 2020 per the filing. Headcount added not disclosed.
2019-12-31	acquisition_addition	announced		2020-01		Michigan, United States	Electric (DTE Sustainable Generation)	USD 33 (millions)	business_combinations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Subsequent event; approximately $33 million paid in cash. Headcount added not disclosed.
2019-12-31	plant_closure	completed			2019-03-27	Michigan, United States	Electric		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Retirement of a single generating unit (not a full facility closure); no associated workforce reduction disclosed.
2019-12-31	plant_closure	completed			2019-12-22	Michigan, United States	Electric		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Retirement of two peaking units; no associated workforce reduction disclosed.
2019-12-31	plant_closure	announced			2022-12-31	Michigan, United States	Electric		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	Six units at Trenton Channel, River Rouge, and St. Clair to be retired through 2022; remaining units at Belle River and Monroe expected to retire by 2040. No associated workforce reduction disclosed; expected_completion_date reflects the through-2022 tranche only.
2018-12-31	plant_closure	in_progress				Michigan, United States	Electric		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Four coal-fired generation units at Trenton Channel, River Rouge, and St. Clair already retired; plans announced to retire remaining thirteen coal-fired units, seven through 2023 and the rest at Belle River and Monroe by 2040. No associated headcount reduction, severance, or WARN notice disclosed in this filing.
2017-12-31	plant_closure	completed	170	2015-12-17	2016-01-31	Pittsburgh, PA	Power and Industrial Projects	USD 111 (millions)	Note 4 — Acquisitions and Exit Activities f5-10k / Qwen3.6-27B-NVFP4-MTP-HTML	Closure of Shenango coke battery plant. Production ceased in January 2016. Charge included $3 million for employee severance related to workforce reduction of approximately 170 employees.
2017-12-31	plant_closure	completed	170	2015-12-17	2016-01-31	Pittsburgh, PA	Power and Industrial Projects	USD 111 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-Q8_0	Closure of Shenango coke battery plant. Production ceased in January 2016. Charge included $96M impairment, $3M severance for ~170 employees, and $12M other expenses.
2016-12-31	plant_closure	completed	170	2015-12-17	2016-01-31	Pittsburgh, PA, United States	Power and Industrial Projects	USD 3 (millions)	restructuring_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Shenango coke battery closure announced December 2015 in response to the North American steel downturn; coke production ceased January 2016. The $3M severance component and the full $111M exit charge (including $96M asset impairment) were recorded in fiscal 2015; approximately $4M remained accrued at 2016 year-end, payable in 2017.
2016-12-31	acquisition_addition	completed		2016-10-01	2016-10-01	Pennsylvania and West Virginia, United States	Gas Storage and Pipelines		business_combinations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Closed purchase of 100% of Appalachia Gathering System and 55% of Stonewall Gas Gathering for approximately $1.2B cash plus $204M assumed debt; acquired headcount not disclosed. $15M of direct transaction costs recorded in 2016 operation and maintenance expense.
2016-12-31	plant_closure	completed	170	2015-12-17	2016-01-31	Pennsylvania	Power and Industrial Projects	USD 111 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-NVFP4-MTP-HTML	Closure of Shenango coke battery plant. Production ceased in January 2016. Charge includes $96M asset impairment, $3M severance, and $12M other expenses.
2016-12-31	restructuring	completed	170	2015-12-17	2016-12-31	Pittsburgh, PA	Power and Industrial Projects	USD 3 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-Q8_0	Closure of Shenango coke battery plant. Workforce reduction of approximately 170 employees. Production ceased in January 2016. $3 million in employee severance expenses recorded in 2015.
2016-09-30	acquisition_addition	announced		2016-09-30	2016-10-20	Pennsylvania and West Virginia	Gas Storage and Pipelines		subsequent_events f5-10q / MiMo-V2.6-Flash-fp8-HTML	Agreement executed in September 2016 to purchase midstream gathering assets (100% of AGS and 55% of SGG) for $1.3 billion; closed October 20, 2016. No headcount associated with the acquisition is disclosed.
2015-12-31	plant_closure	completed	170	2015-12-17	2016-01-31	Pittsburgh, Pennsylvania, United States	Power and Industrial Projects (Shenango coke battery)	USD 111 (millions)	restructuring_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	One-time pre-tax non-cash charge of $111M: $96M long-lived asset impairment, $3M severance for ~170 employees, $12M other (incl. inventory write-downs). Coke production ceased January 2016; ~$7M of accrued amounts expected to be paid in 2016. Driven by downturn in the North American steel industry.
2015-12-31	acquisition_addition	completed		2015-01-21	2015-01-21	Carson City, Michigan, United States	Electric	USD 241 (millions)	business_combinations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Acquisition of a 732 MW simple-cycle natural gas facility from The LS Power Group; purchase price ~$241M. Headcount acquired not disclosed.
2015-12-31	acquisition_addition	completed		2015-10-01	2015-10-01	East China Township, Michigan, United States	Electric	USD 69 (millions)	business_combinations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Acquisition of a 350 MW simple-cycle natural gas facility from a non-utility DTE Energy affiliate; purchase price ~$69M. Headcount acquired not disclosed.
2015-12-31	plant_closure	completed	170	2015-12-17	2016-01-31	Pittsburgh, PA	Power and Industrial Projects	USD 111 (millions)	MD&A f5-10k / Qwen3.6-27B-NVFP4-MTP-HTML	Closure of Shenango coke battery plant. Charge included $96 million impairment, $3 million severance for ~170 employees, and $12 million other expenses. Production ceased in January 2016.
2015-12-31	plant_closure	completed	170	2015-12-17	2016-01-31	Pittsburgh, PA	Power and Industrial Projects	USD 3 (millions)	MD&A f5-10k / Qwen3.6-27B-Q8_0	Closure of Shenango coke battery plant. Workforce reduction of approximately 170 employees. Production ceased in January 2016. $3 million in employee severance expenses recorded.
2015-09-30	acquisition_addition	completed		2015-01-21	2015-01-21	Carson City, Michigan, United States	Electric	USD 241 (millions)	business_combinations_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	DTE Electric acquired a 732 MW simple-cycle natural gas facility from The LS Power Group for approximately $241 million cash; no headcount associated with the transaction is disclosed.
2015-09-30	acquisition_addition	completed		2015-10-01	2015-10-01	East China Township, Michigan, United States	Electric	USD 69 (millions)	business_combinations_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Subsequent-event acquisition of a 350 MW simple-cycle natural gas facility from a non-utility DTE Energy affiliate for approximately $69 million, closed after quarter end; no headcount disclosed.
2014-12-31	acquisition_addition	completed		2014-10-01	2015-01-21	United States — Carson City, Michigan (Montcalm County)	Electric	USD 240 (millions)	subsequent_events f5-10k / MiMo-V2.6-Flash-fp8-HTML	Purchase of a 732 MW simple-cycle natural gas facility from The LS Power Group for approximately $240 million cash; closed 2015-01-21. Headcount transferred not disclosed.
2013-09-30	other	completed		2013-03-01		Michigan, United States	DTE Electric and DTE Gas bargaining units		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	New collective bargaining agreements covering the majority of represented employees became effective March 2013 after early negotiations; contracts expire in March, June and October 2017. Affects approximately 4,900 union-represented employees per the risk factor disclosure.
2013-06-30	other	completed		2013-03-23		United States (Michigan)	DTE Electric and DTE Gas bargaining units (approximately 4,900 represented employees)		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	New four-year collective bargaining agreements with several bargaining units became effective 2013-03-23, ahead of June/October 2013 expirations; new contracts expire 2017-06-05 (DTE Electric) and 2017-10-09 (DTE Gas). Ratification predates this quarter; disclosed as an updated risk factor in this filing. No employee count affected.
2013-03-31	other	completed		2013-03-23		Michigan, United States	DTE Electric and DTE Gas bargaining units (represented employees)		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	Early negotiations produced new four-year collective bargaining agreements effective March 23, 2013, replacing contracts that had been set to expire in June and October 2013; new contracts run through June and October 2017. No employee count or cost disclosed.
2013-03-31	other	completed		2013-03-23		Michigan	DTE Electric and DTE Gas bargaining units		Part II, Item 1A. Risk Factors f5-10q / Qwen3.6-27B-Q8_0	Early negotiations resulted in new four-year labor contracts effective March 23, 2013, replacing retiree medical coverage with a $3,250/year allowance for future Medicare eligible retirees.
2012-12-31	divestiture_reduction	completed		2012-12		Texas, United States	Unconventional Gas Production (discontinued operations)		discontinued_operations_footnote f5-10k / GLM-5.3-flash-HTML	Sold 100% equity interest in the Unconventional Gas Production business (western Barnett and Marble Falls shale assets, ~88,000 net acres near Dallas) in December 2012; gross proceeds ~$255 million with a ~$83 million pre-tax loss ($55 million after-tax). No affected employee headcount was disclosed; announcement_date reflects the completion month since no separate announcement date was given.
2012-12-31	acquisition_addition	completed		2012-07		Primarily Midwest, United States	Power and Industrial Projects — fourteen on-site energy projects		business_combinations_footnote f5-10k / GLM-5.3-flash-HTML	Agreement executed July 2012 to purchase fourteen on-site energy projects from subsidiaries of Duke Energy and GDF Suez; total purchase price ~$294 million ($220 million cash plus ~$74 million assumed debt); all closings occurred in Q4 2012. No employee headcount addition was disclosed.
2012-12-31	divestiture_reduction	completed		2012-12-31	2012-12-31	United States (Texas)	Unconventional Gas Production (discontinued operations)	USD 83 (millions)	discontinued_operations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Sale of 100% equity interest in the Unconventional Gas Production business in December 2012 for gross proceeds of approximately $255 million, resulting in a pre-tax loss of approximately $83 million ($55 million after tax). Employee count transferred not disclosed; charge shown is pre-tax loss on sale, not severance.
2012-12-31	acquisition_addition	completed		2012-07-31	2012-12-31	United States (primarily Midwest)	Power and Industrial Projects	USD 294 (millions)	business_combinations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Portfolio of fourteen on-site energy projects acquired from subsidiaries of Duke Energy and GDF Suez; equity interests ranged from 46% to 100% of project companies, total purchase price approximately $294 million ($220 million cash plus approximately $74 million assumed debt). Headcount added not disclosed; charge shown is purchase price, not a workforce charge.
2012-09-30	other	completed	500			Michigan	Electric Utility — electrical linemen		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	New collective bargaining contract ratified in Q3 2012 covering roughly 500 electrical linemen, expiring August 2016; exact ratification date not disclosed. Majority of remaining represented employees are under contracts expiring June and October 2013.
2012-09-30	acquisition_addition	completed		2012-07	2012-12-31	United States (primarily Midwest)	Power and Industrial Projects		subsequent_events f5-10q / MiMo-V2.6-Flash-fp8-HTML	Agreement executed July 2012 to purchase a portfolio of fourteen on-site energy projects from Duke Energy and GDF Suez subsidiaries; twelve project companies closed October 2012 for ~$257 million, remaining two expected by end of 2012. No headcount added disclosed.
2012-09-30	other	completed	500	2012-09-30	2012-09-30	Michigan	Electric Utility		other f5-10q / Qwen3.6-27B-Q8_0	New contract ratified covering approximately 500 electrical linemen.
2012-06-30	other	in_progress	500		2012-08-31	Michigan, United States	Electric Utility — electrical linemen		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	Collective bargaining negotiation underway with a union representing approximately 500 electrical linemen; contract due to expire August 2012. No separation or headcount reduction disclosed.
2011-12-31	plant_closure	completed			2011-12	Michigan	Electric Utility (Detroit Edison)		Item_1_Business f5-10k / GLM-5.3-flash-HTML	Connors Creek (239 MW), Marysville (84 MW) and St. Clair Unit 5 (250 MW) retired in December 2011 under Detroit Edison's operational plan; no workforce reduction quantified in the filing.
2011-12-31	plant_closure	completed			2011-12-31	Michigan	Electric Utility		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Retirement of Connors Creek (239 MW), Marysville (84 MW) and St. Clair Unit No. 5 (250 MW) generating plants in December 2011 per Detroit Edison's operational plan; no associated headcount or charge disclosed.
2011-12-31	restructuring	in_progress				United States	Company-wide		other f5-10k / MiMo-V2.6-Flash-fp8-HTML	Performance Excellence Process (CTA) restructuring: Detroit Edison amortized $18M of deferred CTA costs and MichCon approximately $3M in 2011; no employee-affected counts disclosed. Amounts are amortization of previously deferred costs, not a current-year charge.
2011-09-30	other	completed	400			United States (Michigan)	Represented employees (bargaining units)		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	New three-year collective bargaining agreement ratified in the second quarter of 2011 covering approximately 400 represented employees; disclosed in this filing but ratified before the current quarter. Remaining represented employees are under contracts expiring August 2012 and June and October 2013.
2011-09-30	other	completed	400	2011-04-01		United States	Various		Note 10 — Labor Contracts f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	New three-year collective bargaining agreement ratified covering approximately 400 represented employees in Q2 2011.
2011-06-30	other	completed	400			United States	Represented employees in one bargaining unit		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	A new three-year labor agreement covering approximately 400 represented employees was ratified during the second quarter of 2011; exact ratification date not disclosed. Remaining represented employees are largely under contracts expiring August 2012 and June/October 2013.
2011-06-30	other	completed	400	2011-06-30					other f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	New three-year labor agreement ratified covering approximately 400 represented employees in Q2 2011.
2011-06-30	other	completed	400	2011-06-30					other f5-10q / Qwen3.6-27B-Q8_0	New three-year collective bargaining agreement ratified covering approximately 400 represented employees.
2010-09-30	other	completed	3,800	2010-09-30		United States (Michigan)	Represented employees across bargaining units		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	New three-year collective bargaining agreement ratified during Q3 2010 covering approximately 3,800 represented employees; exact ratification date not disclosed, quarter-end used as announcement date. Remaining represented employees under contracts expiring June 2011 and August 2012.
2010-09-30	other	completed	3,800			United States	All segments		Note 12 — Labor Contracts f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	New three-year collective bargaining agreement ratified covering approximately 3,800 represented employees in Q3 2010.
2010-09-30	other	completed	3,800	2010-09-30					MD&A f5-10q / Qwen3.6-27B-Q8_0	New three-year agreement ratified covering approximately 3,800 represented employees.
2010-06-30	other	completed	3,800	2010-07-01		United States (Michigan)	Company-wide represented employees		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	New three-year collective bargaining agreement ratified in July 2010 covering approximately 3,800 represented employees; subsequent-event disclosure after quarter end.
2010-06-30	other	completed	3,800	2010-07-01		United States	Various		Part II, Item 1A. Risk Factors f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	New three-year collective bargaining agreement ratified covering approximately 3,800 represented employees.
2010-03-31	other	in_progress				United States (Michigan)	Multiple bargaining units		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	Several bargaining units' contracts expire in June 2010, October 2010 and August 2012; no employee counts, negotiation outcomes or charges disclosed.
2009-12-31	restructuring	completed		2005		United States	Corporate and Utility Support	USD 0 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-NVFP4-MTP-HTML	Performance Excellence Process initiated in 2005. No employee severance costs incurred in 2009; $18 million amortization of prior year deferred costs.
2009-12-31	restructuring	completed		2005		United States	Corporate and Utility Support	USD 0 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-Q8_0	Performance Excellence Process initiated in 2005. No employee severance costs incurred in 2009; $36 million in other costs incurred. Costs deferred as regulatory assets for utilities.
2008-12-31	restructuring	in_progress		2005		Michigan	Electric Utility (Detroit Edison), Gas Utility (MichCon), and corporate support functions	USD 36 (millions)	restructuring_footnote f5-10k / GLM-5.3-flash-HTML	Multi-year company-wide program initiated in 2005. Fiscal 2008 costs of $36 million were project management and consultant support; employee severance costs incurred in 2008 were zero across all segments, so no headcount reduction is attributable to FY2008 activity. Detroit Edison deferred $24 million of costs-to-achieve as a regulatory asset in 2008; deferrals amortize over ten years under MPSC orders. Cumulative-to-date cost detail for the current year only per extraction rules.
2008-12-31	restructuring	completed		2005-01-01		United States	Corporate Support / Utility Operations	USD 0 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-NVFP4-MTP-HTML	Performance Excellence Process initiated in 2005. Costs to achieve (CTA) include employee severance. In 2008, $0 in new CTA costs were incurred; $16 million of prior year deferred CTA costs were amortized. No specific headcount reduction disclosed for 2008.
2008-12-31	restructuring	completed		2005		United States	Corporate Support, Electric Utility, Gas Utility	USD 36 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-Q8_0	Performance Excellence Process initiated in 2005. Total costs incurred in 2008 were $36 million ($0 severance, $36 other). No specific employee count disclosed for 2008 activity.
2008-09-30	other	completed	500	2008-09-30		United States — Michigan	Electric Utility operations		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	Approximately 500 represented employees in electric operations ratified a new four-year collective bargaining contract in September 2008; contracts for remaining represented employees expire in 2009 and 2010.
2008-09-30	restructuring	in_progress				United States — Michigan	Electric Utility, Gas Utility, and corporate support functions		restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Ongoing Performance Excellence Process includes employee severance costs; Detroit Edison deferred $20M of costs-to-achieve in the nine months ended 2008. No employee headcount affected is disclosed.
2008-09-30	restructuring	in_progress		2005-01-01		United States	Electric Utility, Gas Utility, Corporate	USD 13 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Performance Excellence Process initiated in 2005. Q3 2008 total costs incurred were $13 million ($9 million Electric Utility, $2 million Gas Utility, $2 million Other). No employee severance costs incurred in Q3 2008. Costs deferred as regulatory assets where permitted.
2008-09-30	restructuring	in_progress		2005-01-01		United States	Electric Utility, Gas Utility, Corporate	USD 29 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Performance Excellence Process. Nine months ended Sept 30, 2008 total costs incurred were $29 million ($21 million Electric Utility, $5 million Gas Utility, $3 million Other). No employee severance costs incurred in the nine-month period. Costs deferred as regulatory assets where permitted.
2008-09-30	restructuring	in_progress		2005-01-01		United States	Electric Utility, Gas Utility, Corporate	USD 13 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Performance Excellence Process initiated in 2005. Q3 2008 incurred $13M total costs ($9M Electric, $2M Gas, $2M Other). No employee severance costs incurred in Q3 2008. Costs include project management and consultant support.
2008-09-30	restructuring	in_progress		2005-01-01		United States	Electric Utility, Gas Utility, Corporate	USD 29 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Performance Excellence Process. YTD 2008 incurred $29M total costs ($21M Electric, $5M Gas, $3M Other). No employee severance costs incurred YTD 2008. Costs include project management and consultant support.
2008-06-30	restructuring	in_progress		2005-01-01		United States — Michigan	Electric Utility, Gas Utility, and corporate support functions	USD 4 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Performance Excellence Process continued through quarter-end; $4M of costs expensed in Q2 2008 (vs. $2M in Q2 2007), with the remainder deferred as a regulatory asset by Detroit Edison. No employee counts disclosed.
2008-06-30	other	in_progress	500		2008-08-31	United States — Michigan	Electric Utility operations		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	Approximately 500 electric-operations employees are covered by a collective bargaining contract expiring in August 2008; remaining represented employees have contracts expiring in 2009 and 2010.
2008-06-30	restructuring	in_progress				Michigan	Electric Utility, Gas Utility, Corporate	USD 10 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Costs to achieve (CTA) related to the Performance Excellence Process. Includes employee severance and other costs (project management, consultant support). Electric Utility deferred $8M; Gas Utility incurred $2M expensed. Total costs incurred for the three months ended June 30, 2008 were $10 million.
2008-06-30	restructuring	in_progress				Michigan	Electric Utility, Gas Utility, Corporate	USD 16 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Costs to achieve (CTA) related to the Performance Excellence Process. Total costs incurred for the six months ended June 30, 2008 were $16 million. Electric Utility deferred $12M; Gas Utility incurred $3M expensed; Other incurred $1M expensed.
2008-06-30	restructuring	in_progress		2005-01-01		United States	Electric Utility, Gas Utility, Corporate	USD 10 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Performance Excellence Process. Q3 2008 total costs incurred were $10M ($8M Electric, $2M Gas). No employee severance costs incurred in Q3 2008; costs were primarily project management and consultant support.
2008-06-30	restructuring	in_progress		2005-01-01		United States	Electric Utility, Gas Utility, Corporate	USD 16 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Performance Excellence Process. YTD 2008 total costs incurred were $16M ($12M Electric, $3M Gas, $1M Other). No employee severance costs incurred in YTD 2008; costs were primarily project management and consultant support.
2008-03-31	restructuring	in_progress		2005-01-01		United States	Electric Utility, Gas Utility, Corporate	USD 0 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Performance Excellence Process initiated in 2005. Q1 2008 incurred $0 in employee severance costs (all deferred). $4 million in other costs incurred (project management/consultant support). Total costs incurred were $4 million, all deferred. No employees affected count disclosed.
2008-03-31	restructuring	in_progress		2005-01-01		United States	Electric Utility, Gas Utility, Corporate	USD 6 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Performance Excellence Process ongoing. Q1 2008 incurred costs of $6M ($4M Electric, $1M Gas, $1M Other). No employee severance costs incurred in Q1 2008; costs were primarily project management and consultant support. Electric Utility deferred $4M of costs.
2007-12-31	restructuring	in_progress		2005	2008	Michigan, United States	Company-wide (Electric Utility, Gas Utility, Corporate & Other)	USD 76 (millions)	restructuring_footnote f5-10k / GLM-5.3-flash-HTML	Multi-year cost-reduction program initiated mid-2005 and expected to continue into 2008. Fiscal 2007 cost-to-achieve of $76 million comprised $19 million employee severance and $57 million other costs; Electric Utility amounts were deferred as a regulatory asset under MPSC authorization and $11 million expensed in 2007. Special termination benefits of $8 million (pension) and $2 million (postretirement) in 2007 also related to this program. Headcount affected not disclosed.
2007-12-31	divestiture_reduction	completed		2007-06-29	2007-06-29	Northern lower peninsula of Michigan	Unconventional Gas Production — Antrim shale gas exploration and production business		discontinued_operations_footnote f5-10k / GLM-5.3-flash-HTML	Business sold June 29, 2007 for gross proceeds of $1.262 billion; pre-tax gain of $900 million ($580 million after-tax) recognized in continuing operations. Workforce impact not quantified.
2007-12-31	divestiture_reduction	completed		2007-02	2007-07		Power and Industrial Projects — 80 MW natural gas-fired peaking electric generating plant (DTE Georgetown)		discontinued_operations_footnote f5-10k / GLM-5.3-flash-HTML	Sale agreement February 2007; closed July 2007 for gross proceeds of approximately $23 million, approximating carrying value. Previously reported as a discontinued operation. Workforce impact not quantified.
2007-12-31	divestiture_reduction	completed		2007-07	2007-10		Power and Industrial Projects — 50% equity interest in a 320 MW natural gas-fired peaking plant (Crete)		discontinued_operations_footnote f5-10k / GLM-5.3-flash-HTML	Agreement July 2007; closed October 2007 for gross proceeds of approximately $37 million with a pre-tax gain of $8 million ($5 million after-tax). Workforce impact not quantified.
2007-12-31	plant_closure	completed		2007-12-31	2007-12-31	United States	Synthetic Fuel (former non-utility segment; nine synfuel facilities)		discontinued_operations_footnote f5-10k / GLM-5.3-flash-HTML	Business-wide discontinuation: production ceased at all nine synthetic fuel facilities effective December 31, 2007 upon expiration of federal production tax credits; classified as a discontinued operation. Workforce impact not quantified.
2007-12-31	divestiture_reduction	announced		2007-09	2008-06	United States	Power and Industrial Projects — portfolio of select on-site energy and steel-related projects		discontinued_operations_footnote f5-10k / GLM-5.3-flash-HTML	Projects classified as held for sale in September 2007; Company expects to sell a 50% interest for total expected gross proceeds of approximately $650 million and recognize a gain. Completion expected in the first half of 2008, dependent on financing terms. Held-for-sale assets of $508 million and liabilities of $130 million at December 31, 2007.
2007-12-31	divestiture_reduction	completed		2008-01-15	2008-01-15	Barnett shale, north Texas	Unconventional Gas Production — core-area Barnett shale properties		subsequent_events f5-10k / GLM-5.3-flash-HTML	Subsequent to fiscal year-end, Company sold a portion of Barnett shale properties on January 15, 2008 for gross proceeds of approximately $250 million (186 Bcfe of proved and probable reserves on approximately 11,000 net acres); gain to be recognized in the first quarter of 2008. Workforce impact not quantified.
2007-12-31	other	completed	950	2007-10		Michigan	Gas Utility (gas operations)		Item_1_Business f5-10k / GLM-5.3-flash-HTML	New three-year collective bargaining agreement ratified by approximately 950 represented employees in gas operations.
2007-12-31	other	completed	3,100	2007-12		Michigan	Electric Utility (Detroit Edison) and DTE Energy Corporate Services		Item_1_Business f5-10k / GLM-5.3-flash-HTML	New three-year collective bargaining agreement ratified by approximately 3,100 represented employees in electric operations and corporate services.
2007-12-31	restructuring	in_progress		2005-07-01	2008-12-31	United States	Electric Utility, Gas Utility and corporate support functions	USD 19 (millions)	restructuring_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	2007 costs incurred: $19M employee severance, $57M other costs, $76M total; $11M expensed in 2007. Detroit Edison deferred $54M of 2007 costs as a regulatory asset; MichCon could not defer. Program initiated mid-2005 and expected to continue into 2008; no employees-affected count disclosed.
2007-12-31	divestiture_reduction	completed		2007-06-29	2007-06-29	United States (northern lower peninsula, Michigan)	Unconventional Gas Production (Antrim shale)		discontinued_operations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Antrim shale E&P business sold for gross proceeds of $1.262 billion; $900M pre-tax gain ($580M after-tax). Headcount transferred not disclosed.
2007-12-31	divestiture_reduction	completed		2007-12-31	2007-12-31	United States	Synthetic Fuel (discontinued operation)		discontinued_operations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Synthetic fuel operations ceased as of December 31, 2007 upon expiration of synfuel production tax credits; business reclassified as a discontinued operation. Interests in all nine facilities had been sold since 2002 (about 91% of capacity). Headcount not disclosed.
2007-12-31	divestiture_reduction	announced		2008-01-15	2008-01-15	United States (Barnett shale, north Texas)	Unconventional Gas Production		subsequent_events f5-10k / MiMo-V2.6-Flash-fp8-HTML	Subsequent-event sale of core Barnett shale properties (186 Bcfe, ~11,000 net acres) for gross proceeds of approximately $250 million; gain to be recognized in Q1 2008. Headcount not disclosed.
2007-12-31	divestiture_reduction	announced		2007-09-30	2008-06-30	United States	Power and Industrial Projects		discontinued_operations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Portfolio classified as held for sale at September 30, 2007; planned sale of 50% interest with expected gross proceeds of approximately $650 million, targeted for first half of 2008, timing dependent on credit market financing. DTE Energy would retain a managing role; headcount not disclosed.
2007-12-31	restructuring	in_progress		2005-06-01	2008-12-31	United States	Corporate & Utility	USD 76 (millions)	MD&A f5-10k / Qwen3.6-27B-NVFP4-MTP-HTML	Performance Excellence Process initiated in mid-2005. $76 million in costs incurred in 2007 ($19 million employee severance, $57 million other). Program expected to continue into 2008.
2007-12-31	restructuring	in_progress		2005-06-30	2008-12-31	United States	Corporate and Utility Operations	USD 76 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-Q8_0	Performance Excellence Process initiated in mid-2005. Total costs incurred in 2007 were $76 million, including $19 million in employee severance and $57 million in other costs. The process is expected to continue into 2008. Specific employee count affected in 2007 is not disclosed.
2007-09-30	restructuring	in_progress		2005-07-01	2008-12-31	United States (Michigan)	Electric Utility, Gas Utility, Corporate	USD 6 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Performance Excellence Process: $6M total cost incurred in Q3 2007 ($2M expensed, $4M deferred); $50M total cost incurred YTD 2007 ($6M expensed, $44M deferred). Employee severance costs of $4M in Q3 and $18M YTD. No headcount affected disclosed.
2007-09-30	other	completed	950	2007-10-01	2007-10-31	United States (Michigan)	Gas Utility		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	New three-year collective bargaining agreement ratified in October 2007 by approximately 950 employees in gas operations. Subsequent event after quarter end.
2007-09-30	other	announced	3,100	2007-10-01		United States (Michigan)	Electric Utility		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	July 2007 tentative agreement not ratified by ~3,100 electric operations employees; new tentative agreement reached October 2007 subject to ratification. Subsequent event after quarter end.
2007-09-30	restructuring	in_progress		2005-06-30	2008-12-31	United States	Electric Utility, Gas Utility, Corporate Support	USD 21 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Performance Excellence Process initiated mid-2005. $21M total cost incurred in Q3 2007 ($4M employee severance, $17M other costs). Process expected to continue into 2008.
2007-09-30	other	completed	950	2007-10-01	2007-10-01	United States	Gas Operations		other f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	New three-year collective bargaining agreement ratified by approximately 950 employees in gas operations.
2007-09-30	other	announced	3,100	2007-10-01		United States	Electric Operations		other f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	New tentative agreement reached subject to ratification by approximately 3,100 employees in electric operations. July 2007 tentative agreement was not ratified.
2007-09-30	restructuring	in_progress		2005-06-30	2008-12-31	United States	Electric Utility, Gas Utility, Corporate	USD 21 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Performance Excellence Process initiated mid-2005. Q3 2007 incurred $4M employee severance costs ($3M Electric, $1M Gas). Total Q3 costs $21M including other costs. Process expected to continue into 2008.
2007-09-30	other	completed	950	2007-10-01	2007-10-01	United States	Gas Operations		other f5-10q / Qwen3.6-27B-Q8_0	New three-year labor agreement ratified by approximately 950 employees in gas operations.
2007-09-30	other	announced	3,100	2007-10-01		United States	Electric Operations		other f5-10q / Qwen3.6-27B-Q8_0	New tentative labor agreement reached, subject to ratification by approximately 3,100 employees in electric operations.
2007-06-30	restructuring	in_progress		2005-07	2008	United States (Michigan)	Electric Utility, Gas Utility and corporate support functions	USD 12 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Costs incurred in Q2 2007 totaled $12M ($4M employee severance, $8M other); $2M expensed and $10M deferred by Detroit Edison as a regulatory asset. Six-month 2007 costs incurred were $29M with $4M expensed. Detroit Edison deferred ~$102M of 2006 costs and estimates total CTA of ~$150M; MichCon estimates $55-60M and cannot yet defer. No employee counts or severance headcounts disclosed.
2007-06-30	other	announced	3,111	2007-07		United States	Represented (union) employees		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	In July 2007 (subsequent event) the company reached a tentative agreement, subject to ratification, covering 3,111 represented employees. Separately, contracts for 975 employees expire in October 2007 and remaining represented employees' contracts expire in 2008-2009. Unions represent approximately 5,300 employees in total.
2007-06-30	divestiture_reduction	completed		2007-06-29	2007-06-29	United States (northern lower peninsula of Michigan)	Unconventional Gas Production (Antrim shale)		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	Sale of the Antrim shale E&P business to Atlas Energy Resources, LLC for gross proceeds of $1.258 billion closed June 29, 2007. Headcount removed through the divestiture is not disclosed.
2007-06-30	restructuring	in_progress		2005-06-30	2008-12-31	United States	Electric Utility, Gas Utility, Corporate	USD 12 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Performance Excellence Process initiated in mid-2005. Q2 2007 incurred $12M total costs ($4M employee severance, $8M other). Program expected to continue into 2008. Employee count affected not disclosed.
2007-06-30	restructuring	in_progress		2005-06-30	2008-12-31	United States	Electric Utility, Gas Utility, Corporate	USD 12 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Performance Excellence Process initiated mid-2005. Q2 2007 incurred $12M total costs ($4M severance, $8M other). Program expected to continue into 2008. Employee count affected not disclosed.
2007-06-30	other	completed	3,111	2007-07-31	2007-07-31	United States	Various		other f5-10q / Qwen3.6-27B-Q8_0	Reached tentative agreement with union representing 3,111 employees in July 2007, pending ratification.
2007-03-31	restructuring	in_progress		2005-07-01	2007-12-31	Michigan, United States	Electric Utility, Gas Utility and corporate support functions	USD 17 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Costs-to-achieve incurred in Q1 2007: $17M total ($10M employee severance, $7M other); $15M deferred as regulatory asset at Electric Utility, $2M expensed. No headcount affected disclosed; process described as a two-to-three year program begun in 2005.
2007-03-31	other	in_progress	3,245		2007-06-30	United States	Represented (bargaining unit) employees		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	Collective bargaining agreements covering approximately 3,245 represented employees expire June 2007; negotiations have begun. No strike or separation announced.
2007-03-31	other	in_progress	970		2007-10-31	United States	Represented (bargaining unit) employees		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	Contracts covering 970 represented employees expire October 2007; remaining represented employees expire in 2008 and 2009.
2007-03-31	restructuring	in_progress		2005-06-30		United States	Electric Utility, Gas Utility, Corporate	USD 17 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Performance Excellence Process initiated mid-2005. Total costs incurred in Q1 2007 were $17 million ($10 million employee severance, $7 million other). $15 million deferred as regulatory asset; $2 million expensed.
2007-03-31	restructuring	in_progress		2005-06-30		United States	Electric Utility, Gas Utility, Corporate	USD 17 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Performance Excellence Process initiated mid-2005. Q1 2007 incurred $17M total costs ($10M severance, $7M other). $15M deferred by Electric Utility; $2M expensed. Employee count affected not disclosed.
2006-12-31	restructuring	in_progress		2005-07-01		United States	Electric Utility, Gas Utility and corporate support functions	USD 134 (millions)	restructuring_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Performance Excellence Process cost-to-achieve incurred in 2006; includes $70M employee severance ($51M Electric, $17M Gas, $2M Other). Detroit Edison deferred $102M as a regulatory asset. Program expected to run two to three years from 2005; employee counts not disclosed.
2006-12-31	restructuring	in_progress		2005-06-30	2008-12-31	Michigan	Corporate, Electric Utility, Gas Utility	USD 134 (millions)	MD&A f5-10k / Qwen3.6-27B-NVFP4-MTP-HTML	Performance Excellence Process initiated mid-2005. $134 million in costs to achieve (CTA) recorded in 2006, including employee severance. Program expected to yield savings beginning 2007.
2006-12-31	restructuring	in_progress		2005-06-30	2008-06-30	United States	Corporate and Utilities	USD 134 (millions)	MD&A f5-10k / Qwen3.6-27B-Q8_0	Performance Excellence Process initiated in mid-2005. Costs incurred in 2006 totaled $134 million, including $70 million in employee severance costs. Detroit Edison deferred $102 million of these costs as a regulatory asset. The process is expected to be carried out over a two to three year period.
2006-09-30	restructuring	in_progress		2005-07-01	2008-12-31	United States (Michigan)	Electric Utility (Detroit Edison)	USD 77 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Performance Excellence Process CTA costs incurred in Q3 2006; $74M deferred as regulatory asset per MPSC authorization. Total Detroit Edison CTA estimated $160M-$190M. Employee severance cost component not separately quantified for the quarter.
2006-09-30	restructuring	in_progress		2005-07-01	2008-12-31	United States (Michigan)	Gas Utility (MichCon)	USD 18 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Performance Excellence Process CTA costs incurred YTD 2006; not deferred as no MPSC recovery mechanism established. Total MichCon CTA estimated $55M-$60M. Employee severance cost component not separately quantified.
2006-09-30	restructuring	in_progress		2005-06-30	2008-12-31	United States	Electric Utility, Gas Utility, Corporate	USD 97 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Performance Excellence Process initiated mid-2005. Costs incurred through Q3 2006 include employee severance and other costs (project management, consultant support). Detroit Edison deferred $74 million of these costs. Expected to be carried out over two-to-three years beginning in 2006. Employee count not disclosed.
2006-06-30	restructuring	in_progress		2005-07-01		United States (Michigan)	Electric Utility (Detroit Edison)		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	Detroit Edison implementation costs estimated at $160M-$190M over two to three years beginning 2006; includes employee severance. No employee count disclosed.
2006-06-30	restructuring	in_progress		2005-07-01		United States (Michigan)	Gas Utility (MichCon)		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	MichCon implementation costs estimated at $55M-$60M over two to three years beginning 2006; includes employee severance. No employee count disclosed.
2006-06-30	restructuring	in_progress		2005-06-30	2007-12-31	United States	Corporate & Utility Support	USD 56 (millions)	MD&A f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Implementation costs of $56 million recorded in Q2 2006 for project management, consultant support and employee severance. Program initiated mid-2005. Savings expected to begin in 2007.
2006-06-30	restructuring	in_progress		2005-07-01	2006-12-31	United States	DTE Energy Technologies		MD&A f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Restructuring of Dtech business approved in July 2005. Anticipated completion by end of 2006. No specific headcount or charge disclosed in this 10-Q.
2006-06-30	restructuring	in_progress		2005-06-01	2007-12-31	United States	Corporate & Other; Electric Utility; Gas Utility	USD 56 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Company-wide 'Performance Excellence Process' initiated mid-2005. Through Q2 2006, recorded $56M in implementation costs for project management, consultant support, and employee severance. Additional charges expected in 2006 and 2007. Detroit Edison and MichCon seek MPSC authorization to defer/amortize these costs.
2006-06-30	restructuring	in_progress		2005-07-01	2006-12-31	United States	Discontinued Operations (DTE Energy Technologies)		restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Restructuring of DTE Energy Technologies approved July 2005. Assets identified for sale/abandonment. Plan expected to be completed by end of 2006. No specific employee count disclosed in this filing.
2006-03-31	restructuring	in_progress		2005-07-01	2006-06-30	United States	DTE Energy Technologies (Dtech)	USD 23 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Management approved restructuring in July 2005. Net of tax restructuring loss of $23 million recognized in Q3 2005. Anticipate completing restructuring plan by mid-2006.
2006-03-31	restructuring	in_progress		2005-06-30		United States	Company-wide		MD&A f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Initiated company-wide review called Performance Excellence Process in mid-2005. Costs to execute expected to result in restructuring charges in 2006.
2006-03-31	restructuring	in_progress		2005-07-01	2006-06-30		DTE Energy Technologies (Dtech)	USD 23 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Management approved restructuring in July 2005. Net of tax restructuring loss of $23 million recognized in Q3 2005. Plan expected to be completed by mid-2006. No specific employee count disclosed.
2006-03-31	restructuring	in_progress		2005-06-30			Corporate / All Segments		MD&A f5-10q / Qwen3.6-27B-Q8_0	Company-wide review initiated mid-2005 to reduce costs and eliminate waste. Costs expected to result in restructuring charges in 2006. No specific employee count or charge amount disclosed for Q1 2006.
2005-12-31	restructuring	in_progress		2005-07	2006-06	United States	DTE Energy Technologies (Dtech) — discontinued operations	USD 23 (millions)	discontinued_operations_footnote f5-10k / GLM-5.3-flash-HTML	Management approved restructuring of Dtech in July 2005 (certain assets and liabilities to be sold or abandoned, primarily standby and continuous duty operations). Net-of-tax restructuring loss of $23 million recognized in Q3 2005, primarily write-down of assets to fair value less costs to sell plus $16 million goodwill write-off. Headcount affected not disclosed; completion anticipated by mid-2006.
2005-12-31	divestiture_reduction	completed		2004-11	2005-05	Southern Missouri, United States	Southern Missouri Gas Company (SMGC) — discontinued operations	USD 2 (millions)	discontinued_operations_footnote f5-10k / GLM-5.3-flash-HTML	Definitive sale agreement signed November 2004; regulatory approval received April 2005 and sale closed May 2005, generating a net-of-tax gain of $2 million in Q2 2005. An approximately $7 million net-of-tax impairment (write-down to fair value and goodwill write-off) was recorded in 2004 upon held-for-sale classification. Headcount transferred with the utility not disclosed; reported as a discontinued operation.
2005-12-31	acquisition_addition	in_progress		2005	2006	United States (various sites)	Non-Utility Operations — Power and Industrial Projects, On-Site Energy Projects		MD&A f5-10k / GLM-5.3-flash-HTML	Agreement executed in 2005 to purchase five on-site energy projects; three closed in 2005 and the two remaining were expected to close early in 2006. Employee headcount added through the acquisitions not disclosed. Consolidated cash flow shows $50 million of business acquisitions, net of cash acquired, in 2005. Other 2005 acquisitions (a 99% interest in a California biomass plant and a coal mine gas processing facility in southern Illinois) are disclosed without headcount.
2005-12-31	restructuring	announced		2005	2006	United States	Company-wide (Electric and Gas Utilities and corporate support functions)		MD&A f5-10k / GLM-5.3-flash-HTML	Company-wide cost-reduction and process-improvement initiative launched in mid-2005; the filing states that the cost to execute could result in non-recurring restructuring charges in 2006. No headcount reduction, charge amount, or completion timeline quantified.
2005-12-31	restructuring	in_progress		2005-07	2006-06-30	United States	DTE Energy Technologies (Dtech) — distributed generation products	USD 23 (millions)	discontinued_operations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Net-of-tax restructuring loss recognized in Q3 2005, including a $16 million goodwill write-off; headcount affected not disclosed. Reported as a discontinued operation.
2005-12-31	divestiture_reduction	completed		2004-11	2005-05-31	United States (southern Missouri)	Southern Missouri Gas Company (SMGC)		discontinued_operations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Definitive sale agreement entered November 2004; regulatory approval April 2005 and sale closed May 2005. Net-of-tax gain of $2 million recognized in Q2 2005; headcount affected not disclosed.
2005-12-31	restructuring	in_progress		2005-06-30		United States	Company-wide — Electric Utility, Gas Utility and corporate support functions		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	Company-wide cost and process review initiated mid-2005; filer states it could result in non-recurring restructuring charges in 2006. No employee counts or charges quantified for 2005.
2005-12-31	restructuring	completed		2005-07-01	2006-06-30	United States	DTE Energy Technologies (Dtech)	USD 23 (millions)	MD&A f5-10k / Qwen3.6-27B-NVFP4-MTP-HTML	Management approved restructuring of Dtech business in July 2005. Net of tax restructuring loss of $23 million recognized in Q3 2005. Completion anticipated by mid-2006.
2005-12-31	restructuring	in_progress		2005-07	2006-06-30	United States	DTE Energy Technologies (Dtech)	USD 23 (millions)	MD&A f5-10k / Qwen3.6-27B-Q8_0	Management approved restructuring of Dtech business in July 2005. Recognized net of tax restructuring loss of $23 million primarily representing write down to fair value of assets and write-off of goodwill. Anticipate completing restructuring plan by mid-2006.
2005-09-30	restructuring	in_progress		2005-07-31	2006-06-30	United States	DTE Energy Technologies (Dtech) — discontinued operations	USD 23 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Net-of-tax restructuring loss of $23M for write-down of Dtech assets to fair value less costs to sell, plus goodwill write-off and severance/lease termination accrual. No employee headcount disclosed.
2005-09-30	restructuring	in_progress		2005-07-01	2006-06-30	United States	DTE Energy Technologies (Dtech)	USD 23 (millions)	discontinued_operations_footnote f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Management approved restructuring of Dtech business in July 2005. Net of tax restructuring loss of $23 million recognized in Q3 2005, including write-down of assets and accrual of employee severance and lease termination costs. Completion expected by mid-2006.
2005-09-30	restructuring	in_progress		2005-07-01	2006-06-30		DTE Energy Technologies (Dtech)	USD 23 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Management approved restructuring of Dtech in July 2005. Recognized net of tax restructuring loss of $23 million in Q3 2005, including $22 million asset write-down and $1 million accrual for employee severance and lease termination costs. Employee count not disclosed.
2005-06-30	restructuring	announced		2005-07-26		United States	Corporate & Other — DTE Energy Technologies (Dtech)		subsequent_events f5-10q / MiMo-V2.6-Flash-fp8-HTML	Management approved restructuring of Dtech: certain assets/liabilities to be sold, certain businesses terminated, others merged with Detroit Edison. Net-of-tax impairment of $25M–$30M expected in Q3–Q4 2005. No employee count disclosed.
2005-06-30	restructuring	announced		2005-07-26			DTE Energy Technologies (Dtech)	USD 28 (millions)	subsequent_events f5-10q / Qwen3.6-27B-Q8_0	Management approved restructuring of Dtech involving asset sales, business terminations, and mergers. Expected net of tax impairment loss of $25 million to $30 million. Employee count not disclosed.
2004-12-31	restructuring	completed				Michigan and Southern California (remaining regional selling offices)	Non-utility Energy Distribution — DTE Energy Technologies (Dtech)		Item_1_Business f5-10k / GLM-5.3-flash-HTML	During 2004 Dtech revised strategy, closed most sales offices leaving two regional offices, and reduced and realigned its organization for efficiency; no headcount or charge figures disclosed.
2004-12-31	restructuring	completed				United States (Southern California and Michigan)	DTE Energy Technologies (Distributed Generation)		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	In 2004 Dtech closed most sales offices, created two regional offices, and reduced/realigned its organization; headcount impact not quantified.
2004-12-31	divestiture_reduction	announced		2004-11-30	2005-12-31	United States (southern Missouri)	Southern Missouri Gas Company (gas utility)	USD 7 (millions)	discontinued_operations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Held-for-sale impairment of approximately $7 million (net of tax) recognized in 2004; definitive sale agreement entered November 2004, expected to close in 2005. Headcount impact not disclosed.
2004-09-30	other	completed	4,700			Michigan, United States	Electric and gas utility operations (represented employees)		MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Approximately 4,700 represented employees (about 85% of represented workforce) had contracts expiring June 2004 (electric) and October 2004 (gas); both groups ratified new three-year contracts.
2004-06-30	other	completed	4,700	2004-06-30		United States (Michigan)	Electric and Gas Utility Operations (represented employees)		MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Approximately 4,700 represented employees (85% of represented employees) had contracts expiring June 2004 (electric) and October 2004 (gas). Both electric and gas employee groups ratified new three-year contracts during the period.
2003-12-31	divestiture_reduction	completed		2002-12-31	2003-02-28	Michigan	Energy Distribution — transmission (International Transmission Company)		discontinued_operations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Sale to KKR/Trimaran affiliates closed 2003-02-28 for approximately $610 million cash; headcount removed not disclosed. Announcement date shown as December 2002 (definitive agreement).
2003-12-31	divestiture_reduction	completed		2003-01-31	2003-01-31	Michigan	Detroit Edison steam heating business		discontinued_operations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Sold to Thermal Ventures II, LLP in January 2003; recorded a net-of-tax loss of approximately $14 million. Headcount removed not disclosed; transaction not treated as a sale for accounting purposes due to continuing involvement.
2003-12-31	other	in_progress		2003-12-31		Michigan	Corporate & Other / enterprise-wide cost initiatives		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	Cost-savings initiatives in 2003 included a hiring freeze, discretionary spending pause, overtime restrictions and reduced employee compensation costs; no headcount reduction quantified.
2003-12-31	restructuring	completed	1,186	2001-05-31	2001-12-31	United States	Corporate Support	USD 241 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-Q8_0	Work force reduction plan associated with MCN Energy acquisition. Included early retirement incentives and voluntary separation agreements for employees in overlapping corporate support areas. Although the acquisition was in 2001, the footnote details the specific headcount and charges.
2003-03-31	divestiture_reduction	completed		2003-01-01	2003-01-31	Michigan	Energy Distribution	USD 14 (millions)	MD&A f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Sale of Detroit Edison's steam heating business in January 2003 resulted in a net of tax loss of $14 million. Employee count not disclosed.
2003-03-31	divestiture_reduction	completed		2002-12-01	2003-02-28	United States	Energy Distribution		MD&A f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Sale of International Transmission Company (ITC) closed February 28, 2003. Classified as discontinued operation. Employee count not disclosed.
2002-12-31	divestiture_reduction	completed		2002-12	2003-02-28	Michigan, United States	Energy Distribution — International Transmission Company (ITC)		subsequent_events f5-10k / GLM-5.3-flash-HTML	Definitive agreement signed December 2002 to sell ITC for approximately $610 million; sale closed February 28, 2003 with an expected net-of-tax gain of approximately $75 million. ITC employee headcount was not separately disclosed, so affected count is unavailable.
2002-12-31	divestiture_reduction	completed		2003-01	2003-01	Michigan, United States	Energy Distribution — Detroit Edison steam heating business		business_combinations_footnote f5-10k / GLM-5.3-flash-HTML	Sold to Thermal Ventures II, LP in January 2003. Continuing involvement (commitment to purchase $176 million of steam through 2008, fund capital improvements, and guarantee the buyer's credit facility) means the transaction is not treated as a sale for accounting purposes; net-of-tax loss of approximately $13 million expected in Q1 2003. Employee headcount not disclosed.
2002-12-31	divestiture_reduction	completed		2002-12-31	2003-02-28	Michigan	Energy Distribution — International Transmission Company (ITC)		subsequent_events f5-10k / MiMo-V2.6-Flash-fp8-HTML	Sale to KKR/Trimaran affiliates for approximately $610 million cash; closed 2003-02-28 with an approximately $75 million net-of-tax gain. No employee count disclosed; ITC had net income of $42 million in 2002.
2002-12-31	divestiture_reduction	completed		2003-01-31	2003-01-31	Michigan	Energy Distribution — Detroit Edison steam heating business	USD 13 (millions)	subsequent_events f5-10k / MiMo-V2.6-Flash-fp8-HTML	Sold to Thermal Ventures II, LLP in January 2003; approximately $13 million net-of-tax loss recorded in Q1 2003. Not a sale for accounting purposes due to continuing involvement; no employee count disclosed.
2002-12-31	restructuring	completed	1,186	2001-05-31		United States	Corporate support areas	USD 241 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-NVFP4-MTP-HTML	Work force reduction plan associated with MCN Energy acquisition completed in 2001. Included early retirement incentives and voluntary separation agreements for 1,186 employees.
2002-12-31	restructuring	completed	1,186	2001-05-31	2001-12-31	United States	Corporate support areas	USD 241 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-Q8_0	Workforce reduction plan associated with MCN Energy acquisition. Included early retirement incentives and voluntary separation agreements. Approximately $53 million paid as of Dec 31, 2001.
2002-09-30	voluntary_separation	completed	1,186	2001-05-31		United States	Corporate support functions	USD 241 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Plan included early retirement incentives and voluntary separation arrangements primarily in overlapping corporate support functions following MCN Energy acquisition.
2002-09-30	restructuring	completed	1,186	2001-05-31			corporate support functions	USD 241 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Work force reduction plan associated with MCN Energy acquisition; included early retirement incentives and voluntary separation arrangements.
2002-06-30	restructuring	completed	1,184	2001-05-31		United States	Corporate support functions	USD 236 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Workforce reduction plan associated with MCN Energy merger completed in Q2 2001. Included early retirement incentives and voluntary separation arrangements.
2002-06-30	restructuring	completed	1,184	2001-05-31			corporate support functions	USD 236 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Work force reduction plan associated with MCN Energy acquisition; included early retirement incentives and voluntary separation arrangements.
2001-12-31	voluntary_separation	completed	1,186	2001-05-31	2001-12-31	United States	Overlapping corporate support functions	USD 241 (millions)	restructuring_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Restructuring charges of $241M pretax ($157M after tax) in 2001, primarily a workforce reduction plan with early retirement incentives and voluntary separations for 1,186 employees. Approximately $53M of merger and restructuring charges paid as of 2001 year-end; remaining benefits of $215M paid from retirement plans.
2001-12-31	acquisition_addition	completed		2001-05-31	2001-05-31	United States	Gas Utility (MichCon) and other MCN Energy operations		business_combinations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Acquisition of MCN Energy Group Inc. completed May 31, 2001; MCN merged into DTE Enterprises Inc. Headcount added through the acquisition is not separately disclosed; total employees of 11,030 at year-end includes acquired MCN/MichCon employees.
2001-12-31	restructuring	completed	1,186	2001-05-31		United States	Corporate support functions	USD 241 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-Q8_0	Workforce reduction plan including early retirement incentives and voluntary separation arrangements primarily in overlapping corporate support functions following MCN Energy acquisition.
2001-09-30	restructuring	in_progress	1,186			United States (Michigan)	Overlapping corporate support functions	USD 266 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Nine-month 2001 charge of $266M pre-tax ($173M after tax) tied to MCN acquisition workforce reduction plan; includes early retirement incentives and voluntary separation arrangements. About $13M of benefits paid as of 2001-09-30; remainder expected from retirement plans.
2001-09-30	acquisition_addition	completed		2001-05-31	2001-05-31	United States (Michigan)	Gas Utility (MichCon), Energy Trading, other non-regulated operations		business_combinations_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	MCN acquisition closed 2001-05-31; no headcount added disclosed. MichCon serves 1.2 million gas customers; DTEE operations consolidated from acquisition date.
2001-09-30	restructuring	in_progress	1,186	2001-05-31		United States	Corporate support functions	USD 266 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Workforce reduction plan associated with MCN acquisition; includes early retirement and voluntary separation.
2001-09-30	restructuring	in_progress	1,186	2001-09-30		United States	Corporate support functions	USD 266 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Workforce reduction plan in conjunction with MCN acquisition; includes early retirement and voluntary separation arrangements. $13 million benefits paid as of Sept 30, 2001.
2001-06-30	restructuring	in_progress	1,184	2001-05-31		United States (Michigan)	Overlapping corporate support functions	USD 236 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Charge of $236M ($153M after tax) tied to MCN acquisition; includes early retirement incentives and voluntary separation arrangements. About $13M of benefits paid by 2001-06-30; remainder expected to be paid from retirement plans.
2001-06-30	acquisition_addition	completed		2001-05-31	2001-05-31	United States (Michigan)	MCN Energy Group Inc. (DTEE) — natural gas production, gathering, processing, transmission, storage, distribution and energy marketing		business_combinations_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Acquisition of all outstanding MCN shares completed 2001-05-31 for $2.3B cash and stock plus $1.5B assumed debt. No headcount added through the acquisition is disclosed; related workforce reduction of 1,184 employees captured separately.
2001-06-30	restructuring	in_progress	1,184	2001-05-31		United States	Corporate support functions	USD 236 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Workforce reduction plan in conjunction with MCN acquisition; included early retirement incentives and voluntary separation arrangements. $13 million paid as of June 30, 2001.
2001-06-30	restructuring	in_progress	1,184	2001-04-01			corporate support functions	USD 236 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Workforce reduction plan in conjunction with MCN acquisition; includes early retirement and voluntary separation.
2000-09-30	other	completed	572	2000-09-30	2005-09-30	United States — Southeastern Michigan	Detroit Edison — represented by Local 17, International Brotherhood of Electrical Workers		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	Collective bargaining agreement that expired in August 2000 was extended through September 2005 for 572 Detroit Edison employees represented by IBEW Local 17.
2000-06-30	other	announced		2000-06-03		Michigan	Corporate / Workforce Transition		MD&A f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Legislation requires establishment of a worker transition program for workers that might be displaced.
1999-06-30	other	completed		1999-06-22		United States — Southeastern Michigan	Detroit Edison — Trade/Utility Operations		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	Members of Local 223, Utility Workers Union of America ratified a new 5-year Trade Contract with Detroit Edison. No headcount or financial impact disclosed.
1999-06-30	other	completed		1999-06-22		Michigan	Utility Operations		Part II, Item 5 f5-10q / Qwen3.6-27B-NVFP4-MTP-HTML	Members of Local 223, Utility Workers Union of America, ratified a new 5-year Trade Contract with Detroit Edison.
1999-06-30	other	completed		1999-06-22		Michigan	Utility Workers		other f5-10q / Qwen3.6-27B-Q8_0	Members of Local 223, Utility Workers Union of America, ratified a new 5-year Trade Contract with Detroit Edison.
1998-06-30	other	completed				Michigan	General Motors		MD&A f5-10q / Qwen3.6-27B-Q8_0	General Motors strike mentioned as context for industrial sales demand.
1996-09-30	plant_closure	announced		1996-09-09	1997-12-31	Detroit, Michigan	Steam heating business	USD 149 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Q3 1996 special charge covers reserve for steam purchase commitments 1997-2008, retirement and closure of part of the steam heating system in 1997, and an $18 million service-improvement investment. No employee count or severance detail disclosed; charge announced via Form 8-K dated 1996-09-09.