Fundamentals - CME Group (CME)

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 10-Q data

Business Unit / Product Segments

Major Customers (% of Revenue)

Operational KPIs

Average rate per contract (arpu)

Performance bond collateral (aua)

No 10-Q data

Cleared swaps open interest (backlog)

No 10-Q data

Clearing capacity (capacity)

No 10-Q data

Voluntary turnover (churn)

No 10-Q data

Direct customer connections (customers)

Non-cash clearing deposits (deposits)

Cash Markets Notional Value (gmv)

Headcount (headcount)

Building occupancy (occupancy)

10-Year Treasury (other)

No 10-K data

10-Year Treasury ADV (other)

No 10-K data

2-Year Treasury (other)

No 10-K data

2-Year Treasury ADV (other)

No 10-K data

5-Year Treasury (other)

No 10-K data

5-Year Treasury ADV (other)

No 10-K data

Aggregate average daily volume (other)

No 10-Q data

Agricultural commodity volume (other)

No 10-K data

Agricultural volume (other)

No 10-K data

Annualized average rate earned (other)

No 10-K data

Annualized average rate earned on investments (other)

No 10-K data

Annualized average rate of return (other)

No 10-K data

Annualized average rate paid (other)

No 10-K data

Annualized return on securities lending (other)

No 10-K data

Australian Dollar ADV (other)

No 10-K data

Average Daily Volume (other)

No 10-Q data

Average Rate Per Contract (other)

No 10-Q data

Average basic device screen count (other)

No 10-Q data

Average daily balance of funds invested (other)

No 10-K data

Average daily balance of proceeds from securities lending (other)

No 10-K data

Average daily balance of securities lending (other)

No 10-K data

Average daily cleared volume (other)

No 10-Q data

Average daily contract volume (other)

Average daily electronic trading volume (other)

No 10-K data

Average daily margin saving (other)

No 10-Q data

Average daily notional (other)

Average daily notional value (other)

Average daily settlement (other)

No 10-K data

Average daily settlement funds (other)

No 10-Q data

Average daily settlement transfers (other)

Average daily settlement volume (other)

No 10-K data

Average daily trading volume (other)

No 10-K data

Average daily volume (other)

Average daily volume by product (other)

No 10-K data

Average daily volume by venue (other)

Average estimated monthly basic device screen count (other)

No 10-K data

Average investment balance (other)

No 10-K data

Average rate earned on securities lending (other)

No 10-K data

Average rate per contract (other)

Average transaction size (other)

No 10-Q data

Avg daily volume (other)

No 10-K data

Basic device fee (other)

No 10-K data

Basic device monthly fee (other)

No 10-K data

Basic device screen count (other)

No 10-K data

Basic device screens (other)

No 10-K data

Basic market data fee (other)

No 10-K data

Basic service devices (other)

No 10-Q data

British Pound ADV (other)

No 10-K data

CBOE Volatility Index (other)

No 10-K data

CBOT average daily volume (other)

No 10-K data

CBOT contracts cleared (other)

CBOT open interest (other)

No 10-Q data

CME Globex average daily volume (other)

No 10-K data

CME Globex electronic volume (other)

No 10-Q data

CME Globex share of volume (other)

No 10-Q data

CME Globex single-day volume record (other)

No 10-Q data

CME Globex volume (other)

CME Globex volume as percentage of total (other)

No 10-K data

CME Globex volume share (other)

No 10-Q data

CME Trust assets (other)

No 10-Q data

Cash at Federal Reserve (other)

No 10-K data

Cash at Federal Reserve Bank (other)

Cash earnings (other)

No 10-K data

Cash held at Federal Reserve (other)

Cash performance bonds (other)

No 10-Q data

Cash performance bonds and guaranty fund contributions (other)

No 10-K data

Cash performance bonds and security deposits (other)

No 10-K data

Class A shares outstanding (other)

ClearPort products added (other)

No 10-Q data

ClearPort products launched (other)

No 10-Q data

Cleared OTC notional (other)

No 10-Q data

Cleared OTC open interest (other)

No 10-Q data

Cleared swap transactions notional (other)

No 10-Q data

Cleared swaps notional (other)

No 10-Q data

Cleared swaps notional outstanding (other)

No 10-Q data

Cleared swaps notional traded (other)

No 10-Q data

Cleared swaps open interest (other)

No 10-Q data

Cleared swaps revenue share (other)

No 10-Q data

Clearing and transaction fees by product line (other)

No 10-Q data

Clearing capacity per day (other)

No 10-Q data

Clearing daily volume (other)

No 10-Q data

Clearing fee revenue mix (other)

No 10-Q data

Clearing firms (other)

No 10-Q data

Clearing house daily volume (other)

No 10-Q data

Clearing settlement transfers (other)

No 10-K data

Clearing transactions per day (other)

No 10-Q data

Co-location revenue share (other)

No 10-Q data

Collateral available (other)

No 10-K data

Collateral held (other)

No 10-Q data

Collateral held as custodian (other)

No 10-Q data

Collateral held for performance bonds (other)

No 10-Q data

Collateral held in custody (other)

No 10-Q data

Commercial paper outstanding (other)

No 10-K data

Contract volume (other)

Contracts cleared (other)

No 10-Q data

Contracts cleared daily (other)

No 10-Q data

Contracts cleared for CBOT (other)

No 10-K data

Copper ADV (other)

No 10-K data

Corn ADV (other)

No 10-K data

Countries with customer access (other)

No 10-Q data

Countries with direct access (other)

No 10-Q data

Cross-margin collateral savings (other)

No 10-Q data

Cross-margin savings (other)

No 10-Q data

Cross-margining reduction (other)

No 10-Q data

Cumulative contracts traded (other)

No 10-K data

Daily clearing transfers (other)

No 10-K data

Daily notional value (other)

No 10-K data

Daily settlement funds (other)

No 10-Q data

Daily settlement transfers (other)

Daily settlement volume (other)

No 10-Q data

Data display screens (other)

No 10-Q data

Days over one million GLOBEX contracts (other)

No 10-K data

Default resources (other)

No 10-Q data

E-mini Nasdaq 100 ADV (other)

No 10-K data

E-mini Russell 2000 ADV (other)

No 10-K data

E-mini S&P 500 ADV (other)

No 10-K data

E-mini S&P 500 volume (other)

No 10-K data

E-mini average daily volume (other)

No 10-K data

E-mini equity options volume (other)

No 10-K data

E-mini equity volume (other)

No 10-K data

Electronic Eurodollar volume (other)

No 10-Q data

Electronic Volume Percentage (other)

No 10-Q data

Electronic interest rate volume (other)

No 10-K data

Electronic options share (other)

No 10-Q data

Electronic options volume share (other)

No 10-Q data

Electronic processing share (other)

No 10-K data

Electronic share of FX volume (other)

No 10-K data

Electronic share of volume (other)

No 10-Q data

Electronic trading share (other)

Electronic trading share of volume (other)

Electronic trading volume (other)

No 10-K data

Electronic transaction processing (other)

No 10-K data

Electronic transaction share (other)

No 10-K data

Electronic volume (other)

No 10-K data

Electronic volume % (other)

No 10-K data

Electronic volume mix (other)

No 10-Q data

Electronic volume outside U.S. (other)

No 10-Q data

Electronic volume percentage (other)

Electronic volume share (other)

Employee engagement score (other)

No 10-Q data

Employee promotion rate (other)

No 10-Q data

Employee promotions (other)

No 10-Q data

Employees promoted (other)

No 10-Q data

Energy volume (other)

No 10-K data

Equity index volume (other)

No 10-K data

Equity market share (other)

No 10-Q data

Euro FX ADV (other)

No 10-K data

Eurodollar Back 32 futures (other)

No 10-K data

Eurodollar Front 8 futures (other)

No 10-K data

Eurodollar Options (other)

No 10-K data

Eurodollar average daily volume (other)

No 10-Q data

Eurodollar clearing fee share (other)

No 10-K data

Eurodollar futures ADV (other)

No 10-K data

Eurodollar futures and options volume (other)

No 10-K data

Eurodollar futures volume (other)

No 10-K data

Eurodollar market makers (other)

No 10-Q data

Eurodollar notional value (other)

No 10-Q data

Eurodollar open interest (other)

No 10-Q data

Eurodollar options volume (other)

No 10-K data

European repo notional (other)

No 10-K data

Excess borrowing capacity (other)

No 10-K data

Exchanges using SPAN (other)

No 10-Q data

Exercise right privileges (other)

No 10-K data

FX daily notional (other)

No 10-Q data

FX futures notional value (other)

No 10-K data

FX notional volume (other)

No 10-Q data

FX volume (other)

No 10-K data

Federal Funds futures and options volume (other)

No 10-K data

Federal Reserve cash (other)

No 10-K data

Federal Reserve cash account balance (other)

No 10-K data

Federal Reserve cash balance (other)

No 10-K data

Fee revenue mix (other)

No 10-Q data

Fee revenue share by venue (other)

No 10-Q data

Financial safeguards (other)

No 10-Q data

Financial safeguards package (other)

No 10-Q data

Foreign exchange GLOBEX share (other)

No 10-K data

Foreign exchange clearing fee share (other)

No 10-K data

Foreign exchange electronic share (other)

No 10-K data

Foreign exchange volume (other)

No 10-K data

Foreign exchange volume on Globex (other)

No 10-K data

GFX futures notional position (other)

No 10-K data

GFX futures notional value (other)

No 10-K data

GFX futures positions notional value (other)

No 10-K data

GFX net trading gains (other)

No 10-K data

GLOBEX average daily volume (other)

No 10-K data

GLOBEX electronic volume (other)

No 10-K data

GLOBEX share of volume (other)

GLOBEX single-day volume record (other)

No 10-K data

GLOBEX trading volume (other)

No 10-Q data

GLOBEX trading volume percentage (other)

No 10-K data

GLOBEX volume share (other)

No 10-K data

Globex average daily volume (other)

No 10-K data

Globex electronic volume (other)

No 10-K data

Globex share of foreign exchange volume (other)

No 10-K data

Globex share of interest rate volume (other)

No 10-K data

Globex share of trading volume (other)

No 10-K data

Globex share of volume (other)

No 10-K data

Globex volume (other)

No 10-K data

Globex volume share (other)

No 10-Q data

Gold ADV (other)

No 10-K data

Guaranty fund capacity (other)

No 10-K data

Guaranty fund collateral (other)

Guaranty fund collateral available (other)

Guaranty fund contributions (other)

No 10-Q data

Guaranty fund contributions available (other)

Guaranty funds available (other)

No 10-K data

IEF program balances (other)

No 10-Q data

IEF program principal (other)

No 10-Q data

Index properties (other)

No 10-Q data

Index services revenue share (other)

No 10-Q data

Interest Earning Facility balances (other)

No 10-Q data

Interest Earning Facility principal (other)

No 10-Q data

Interest rate GLOBEX share (other)

No 10-K data

Interest rate options average daily volume (other)

No 10-K data

Interest rate volume (other)

No 10-K data

Interest rate volume on Globex (other)

No 10-K data

Internal fill rate (other)

No 10-Q data

Internal placement (other)

No 10-Q data

Internal placement rate (other)

No 10-Q data

Internal placements (other)

No 10-Q data

International electronic volume share (other)

No 10-Q data

International hub trading share (other)

No 10-Q data

International market data revenue (other)

No 10-Q data

International market data revenue share (other)

No 10-Q data

International volume mix (other)

No 10-Q data

International volume share (other)

No 10-Q data

Japanese Yen ADV (other)

No 10-K data

Key product average daily volume (other)

Key product daily volume (other)

No 10-K data

Key product volume (other)

No 10-K data

Largest daily open interest (other)

No 10-Q data

Largest open interest (other)

No 10-Q data

Letters of credit (other)

No 10-K data

Letters of credit outstanding (other)

No 10-K data

Line of credit (other)

No 10-Q data

Listed derivatives contracts (other)

No 10-Q data

Market data device fee (other)

No 10-Q data

Market data device screens (other)

No 10-K data

Market data device subscriptions (other)

No 10-Q data

Market data devices (other)

Market data international share (other)

No 10-Q data

Market data resellers (other)

No 10-Q data

Market data revenue outside U.S. (other)

No 10-Q data

Market data revenue share (other)

No 10-Q data

Market data screens (other)

Member and special program share of volume (other)

No 10-K data

Member share of trading volume (other)

No 10-Q data

Member share of volume (other)

No 10-Q data

Member trade volume share (other)

No 10-Q data

Member trading share (other)

No 10-Q data

Member trading share of volume (other)

Member trading volume share (other)

No 10-Q data

Member volume mix (other)

No 10-Q data

Member volume share (other)

No 10-Q data

Member-generated volume share (other)

No 10-K data

Member-traded volume share (other)

No 10-Q data

Metal volume (other)

No 10-K data

Micro E-mini volume (other)

No 10-K data

Monthly fee per device (other)

No 10-Q data

Monthly trading volume record (other)

No 10-K data

NASDAQ-100 clearing fee share (other)

No 10-K data

NYMEX average daily volume (other)

No 10-K data

NYMEX trade matching volume (other)

No 10-K data

NYMEX trading volume (other)

No 10-Q data

Natural Gas ADV (other)

No 10-K data

Net earned from securities lending (other)

No 10-K data

Net position limits (other)

No 10-K data

Non-U.S. electronic trading volume share (other)

No 10-Q data

Non-U.S. electronic volume share (other)

No 10-Q data

Non-U.S. hours trading (other)

No 10-Q data

Non-U.S. hours trading share (other)

No 10-Q data

Non-U.S. hours volume share (other)

No 10-Q data

Non-U.S. market data revenue share (other)

No 10-Q data

Non-U.S. market data share (other)

No 10-Q data

Non-U.S. share of electronic volume (other)

No 10-Q data

Non-U.S. share of market data revenue (other)

No 10-Q data

Non-U.S. volume share (other)

No 10-Q data

Non-US hours share (other)

No 10-Q data

Non-US market data revenue share (other)

No 10-Q data

Non-US volume share (other)

No 10-Q data

Non-member share of trades (other)

No 10-K data

Notional value of trading volume (other)

No 10-Q data

Notional value traded (other)

No 10-Q data

Number of Reportable Segments (other)

No 10-K data

OTC cleared notional value (other)

No 10-Q data

OTC notional cleared (other)

No 10-Q data

OTC open interest (other)

No 10-Q data

Open Interest (other)

No 10-Q data

Open interest (other)

No 10-Q data

Open interest at year end (other)

No 10-Q data

Open interest at year-end (other)

No 10-Q data

Open interest record (other)

No 10-Q data

Open outcry share of clearing fee revenue (other)

No 10-K data

Open outcry share of volume (other)

No 10-Q data

Open outcry volume share (other)

No 10-K data

Open roles filled internally (other)

No 10-Q data

Operating margin (other)

No 10-K data

Options traded electronically (other)

No 10-Q data

Overnight reverse repurchase agreements (other)

No 10-K data

Peak market data (other)

No 10-Q data

Peak open interest (other)

No 10-Q data

Peak order load (other)

No 10-Q data

Peak transactions processed (other)

No 10-Q data

Percentage of interest rate volume on CME Globex (other)

No 10-K data

Percentage of transactions processed electronically (other)

No 10-K data

Performance bond Treasury securities (other)

No 10-K data

Performance bond cash at Federal Reserve (other)

No 10-K data

Performance bond collateral (other)

Performance bond collateral held (other)

No 10-Q data

Performance bond deposits (other)

No 10-Q data

Performance bonds and guaranty fund (other)

No 10-K data

Performance bonds and guaranty fund contributions (other)

No 10-K data

Performance bonds and guaranty funds (other)

No 10-K data

Performance bonds at Fed (other)

No 10-K data

Product fee share (other)

No 10-Q data

Product mix share of volume (other)

No 10-K data

Product trading volume (other)

No 10-K data

Promotion rate (other)

No 10-Q data

Promotions (other)

No 10-Q data

Protection fund available (other)

No 10-K data

Quote vendors (other)

No 10-Q data

Refined Products ADV (other)

No 10-K data

Reseller concentration (other)

No 10-Q data

Revenue by trading venue (other)

No 10-Q data

Russell-based contract volume (other)

No 10-K data

S&P 500 clearing fee share (other)

No 10-K data

SOFR futures ADV (other)

No 10-K data

SPAN adopters (other)

No 10-Q data

SPAN risk system adopters (other)

No 10-Q data

Screens (other)

No 10-K data

Screens displaying market data (other)

No 10-K data

Securities lending average balance (other)

No 10-K data

Securities lending average daily balance (other)

No 10-K data

Securities lending balance (other)

No 10-Q data

Securities lending funds invested (other)

No 10-K data

Securities lending rate earned (other)

No 10-K data

Securities lending rate paid (other)

No 10-K data

Securities on loan (other)

No 10-Q data

Settlement funds (other)

No 10-Q data

Settlement funds moved (other)

No 10-Q data

Settlement funds moved daily (other)

No 10-Q data

Settlement funds per day (other)

No 10-Q data

Settlement funds processed (other)

No 10-Q data

Settlement funds transferred daily (other)

No 10-Q data

Shares outstanding (other)

No 10-K data

Shares repurchased (other)

No 10-K data

Silver ADV (other)

No 10-K data

Single-day trading volume record (other)

No 10-K data

Soybean ADV (other)

No 10-K data

Spot FX notional (other)

No 10-K data

Stock index futures market share (other)

No 10-Q data

Stock index market share (other)

No 10-Q data

Stock index volume via GLOBEX (other)

No 10-K data

Swap default resources (other)

No 10-Q data

Telecom hub trading (other)

No 10-Q data

Telecom hub volume share (other)

No 10-Q data

Telecom hubs (other)

No 10-Q data

Telecommunication hub volume share (other)

No 10-Q data

Telecommunications hubs (other)

No 10-Q data

Term SOFR licensees (other)

No 10-Q data

Total Notional Value (other)

No 10-Q data

Total Trading Volume (other)

No 10-Q data

Total contract volume (other)

Total contracts traded (other)

No 10-Q data

Total equity trading volume (other)

No 10-Q data

Total notional value (other)

No 10-Q data

Total notional value traded (other)

No 10-Q data

Total trading volume (other)

Total volume (other)

No 10-K data

Trading during non-U.S. hours (other)

No 10-Q data

Trading floors (other)

No 10-Q data

Trading through telecommunication hubs (other)

No 10-Q data

Trading venue revenue mix (other)

No 10-Q data

Trading volume (other)

Trading volume growth (other)

No 10-Q data

Transactions processed daily (other)

No 10-Q data

Treasury bond (other)

No 10-K data

U.S. Treasury futures and options volume (other)

No 10-K data

U.S. Treasury notional (other)

No 10-K data

U.S. equity futures market share (other)

No 10-Q data

U.S. repos notional (other)

No 10-K data

Venue average daily volume (other)

No 10-K data

Volume by venue (other)

No 10-K data

Volume mix by product (other)

No 10-K data

Volume outside U.S. (other)

No 10-Q data

Voluntary employee turnover (other)

No 10-Q data

Voluntary turnover (other)

No 10-Q data

Voluntary turnover rate (other)

No 10-Q data

WTI Crude Oil ADV (other)

No 10-K data

Weighted average discount rate (other)

No 10-K data

Wheat ADV (other)

No 10-K data

Average daily volume (production_volume)

No 10-K data

Buildings owned (properties)

No 10-Q data

Office square footage (square_footage)

No 10-Q data

E-mini market data subscribers (subscribers)

Contracts cleared in 2004 (throughput)

Electronic volume (transactions)

Average Daily Volume (units_shipped)

No 10-Q data

Basic Device Screen Count (users)

Electronic volume share (utilization_rate)

No 10-K data

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

Workforce Totals

No 10-Q data

Demographics

No demographic data found.

Workforce Breakdowns

No 10-Q data

HCM Metrics — Point-in-Time

No 10-Q data

HCM Metrics — Flow (Annual / YTD)

No 10-Q data

No 10-K data

Workforce Actions

Period End	Type	Status	Affected	% Workforce	Announced	Expected Completion	Geography	Segment / Function	Charge	Source	Note
2026-03-31	restructuring	in_progress						Multiple divisions		MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	MD&A states employee separation and restructuring expense was higher in Q1 2026 due to a restructuring effort across multiple divisions; no employee count, charge amount, or completion date disclosed. The $2.9 million figure in the expense-change table is the year-over-year increase in that expense line, not a program charge.
2026-03-31	restructuring	in_progress						multiple divisions	USD 3 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Employee separation and restructuring expense was higher during the first quarter of 2026 as a result of a restructuring effort across multiple divisions of the company. Specific headcount affected is not disclosed.
2025-12-31	divestiture_reduction	completed			2025-10-01		Global	OSTTRA (50% joint venture, post-trade solutions)		other f5-10k / MiMo-V2.6-Flash-fp8-HTML	S&P Global and CME Group completed the sale of OSTTRA to KKR-managed funds in October 2025; no headcount or severance figures disclosed. Related professional fees of $22.1 million (OSTTRA sale) recorded in 2025 operating expenses per MD&A.
2024-12-31	reduction_in_force	completed		3%	2023	2023-12-31	Global			MD&A f5-10k / Qwen3.6-27B-Q8_0	Reduction in force of 3% of employees occurred during 2023, contributing to lower employee separation and restructuring costs in 2024 compared to 2023.
2023-12-31	reduction_in_force	completed		3%			Global	Company-wide		MD&A f5-10k / GLM-5.3-flash-HTML	Reduction in force affecting 3% of employees occurred during 2023. MD&A attributes a $10.3 million year-over-year increase in employee separation and restructuring expense to this action; that figure is the increase in expense, not the total charge, so no absolute charge value is recorded.
2023-12-31	reduction_in_force	completed		3%			Global	Company-wide		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	Approximately 3% of the ~3,565 workforce (roughly 107 employees implied, not explicitly stated). Related employee separation and restructuring expense increased $10.3 million year over year; no absolute charge amount disclosed for the RIF itself.
2023-12-31	reduction_in_force	completed		3%	2023	2023-12-31	Global	Not specified		MD&A f5-10k / Qwen3.6-27B-Q8_0	Reduction in force of 3% of employees during 2023. Specific headcount not disclosed, only percentage.
2023-09-30	layoff	completed		3%			Not specified	Not specified		MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Layoff of 3% of employees in Q3 2023; no headcount, date, or charge amount disclosed. MD&A shows employee separation and restructuring costs rose $12.0M in Q3 and $8.0M YTD vs. prior year (change, not the charge itself).
2023-09-30	layoff	completed		3%	2023-09-30	2023-09-30	Global	All functions	USD 12 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Filing states: 'Employee separation and restructuring costs increased during the quarter... largely due to a layoff of 3% of employees in the third quarter of 2023.' Associated charge of $12.0 million reported in the expense change table.
2022-12-31	reduction_in_force	completed								MD&A f5-10k / GLM-5.3-flash-HTML	MD&A attributes lower 2022 employee separation and retention costs (a $25.0 million decrease versus 2021) to a smaller reduction in workforce during the year; no headcount affected, program details, or absolute charge amount are disclosed.
2022-09-30	restructuring	in_progress								MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	MD&A expense bridge discloses employee severance and restructuring costs of $5.1M for the quarter and $16.3M for the nine months, both lower than prior year due to lower reductions in workforce; no employee counts, announcement dates, or completion timing disclosed
2022-09-30	restructuring	completed							USD 5 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Employee separation and retention costs were lower during the third quarter of 2022 due to lower reductions in workforce compared with the same period in 2021.
2022-09-30	restructuring	completed							USD 16 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Employee separation and retention costs were lower during the first nine months of 2022 due to lower reductions in workforce compared with the same periods in 2021.
2022-06-30	restructuring	in_progress								MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	MD&A states employee separation and retention costs were lower in Q2 and 1H 2022 due to a smaller reduction in workforce versus the prior-year periods; no headcount, charge, or timing disclosed. Related expense line: $0.9M (Q2) and $11.2M (1H) of separation/retention cost reductions versus 2021.
2022-03-31	restructuring	completed						Optimization business		MD&A f5-10q / Qwen3.6-27B-Q8_0	Contribution of employees from CME Group's optimization businesses to the new joint venture with IHS Markit in September 2021 resulted in a net decrease in headcount.
2022-03-31	reduction_in_force	completed								MD&A f5-10q / Qwen3.6-27B-Q8_0	Lower employee separation and retention costs in Q1 2022 due to a lower reduction in workforce compared to the same period in 2021.
2021-12-31	divestiture_reduction	completed			2021-01	2021-09		Post-trade services / optimization business (Traiana, TriOptima, Reset)		other f5-10k / GLM-5.3-flash-HTML	Net assets of the optimization business were contributed to OSTTRA, a 50/50 joint venture with IHS Markit, for $112.5M cash plus a 50% equity interest; the business's employees were contributed to the JV in September 2021. Headcount not quantified. A $400.7M net gain on deconsolidation was recognized in 2021.
2021-12-31	other	completed								MD&A f5-10k / GLM-5.3-flash-HTML	Unquantified reduction in workforce during 2021: employee separation and retention costs rose $15.0M versus 2020, and stock-based compensation declined partly due to higher forfeitures from headcount reductions.
2021-12-31	plant_closure	completed			2021-05	2021-05	Chicago, Illinois	Open outcry trading (all products except Eurodollar and SOFR options)		MD&A f5-10k / GLM-5.3-flash-HTML	Permanent closure of most open outcry pits announced May 2021; open outcry is conducted by exchange members rather than employees, and no employee headcount reduction was disclosed.
2021-12-31	divestiture_reduction	completed			2021-01	2021-09-30	Global	Optimization business (Traiana, TriOptima, Reset)		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	Employees from the optimization businesses were contributed to the OSTTRA joint venture with IHS Markit in September 2021 and deconsolidated; headcount transferred not quantified. MD&A attributes part of the 2021 decrease in salaries, benefits and employer taxes to this transfer.
2021-12-31	restructuring	completed				2021-12-31	Global	Enterprise		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	MD&A discloses higher workforce reductions in 2021 versus 2020 (employee separation and retention costs up $15.0 million year over year) but gives no employee count, program name, or charge total; no restructuring footnote is presented.
2021-12-31	plant_closure	completed			2021-05	2021-12-31	United States — Chicago, IL	Open outcry trading floor operations		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Trading floor outside Eurodollar and SOFR options permanently closed beginning May 2021; associated building at 333 S. LaSalle Street sold in Q4 2021. No headcount impact quantified.
2021-12-31	restructuring	completed			2021-09-01	2021-09-30	Global	Optimization Business		MD&A f5-10k / Qwen3.6-27B-Q8_0	Contribution of net assets of optimization business to OSTTRA joint venture with IHS Markit in September 2021. MD&A notes 'higher reductions in workforce' and 'contribution of employees' compared to 2020, but does not disclose specific headcount affected.
2021-12-31	reduction_in_force	completed			2021-01-01	2021-12-31	Global	General		MD&A f5-10k / Qwen3.6-27B-Q8_0	MD&A states 'Employee separation and retention costs were higher during 2021 due to a higher reduction in workforce compared to 2020.' Specific headcount not disclosed.
2021-09-30	divestiture_reduction	completed			2021-09-30	2021-09-30	Global	Optimization business (Traiana, TriOptima, Reset)		MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Employees of the optimization businesses were contributed to the OSTTRA joint venture with IHS Markit, launched September 2021; no employee count disclosed. Related $343.5M deconsolidation gain is a non-cash accounting item, not a severance charge.
2021-09-30	restructuring	in_progress					Global	Not specified		MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Filer cites higher workforce reductions and elevated employee separation and retention costs in Q3 and 9M 2021 versus prior year; no headcount or charge amount disclosed. May overlap with the OSTTRA employee contribution.
2021-09-30	restructuring	completed			2021-09-30	2021-09-30		Optimization business		MD&A f5-10q / Qwen3.6-27B-Q8_0	Contribution of employees from CME Group's optimization businesses to the new joint venture with IHS Markit (OSTTRA) in September 2021. Employee count not disclosed.
2021-09-30	reduction_in_force	completed			2021-09-30	2021-09-30				MD&A f5-10q / Qwen3.6-27B-Q8_0	Higher reduction in workforce compared to the same periods in 2020, resulting in higher employee separation and retention costs. Employee count not disclosed.
2021-06-30	reduction_in_force	in_progress								MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	MD&A attributes higher separation and retention costs in Q2 and 1H 2021 to a larger reduction in workforce versus prior year; no headcount, charge, or timing disclosed. Related expense line: employee separation and retention costs up $0.2M (Q2) and $9.3M (1H) year over year.
2021-06-30	restructuring	completed							USD 0 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Employee separation and retention costs were higher during the second quarter of 2021 due to a higher reduction in workforce compared to the same periods in 2020.
2021-06-30	restructuring	completed							USD 9 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Employee separation and retention costs were higher during the first six months of 2021 due to a higher reduction in workforce compared to the same periods in 2020.
2021-03-31	restructuring	in_progress							USD 11 (millions)	MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	MD&A attributes a $10.8 million year-over-year increase in employee severance and restructuring expense to a larger reduction in workforce in Q1 2021 versus Q1 2020; no employee count, program name, or completion date is disclosed. Amount shown is the change in expense, not a program charge.
2021-03-31	plant_closure	announced			2021-05		United States	Chicago trading floor		MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Post-quarter announcement that only the Eurodollar options pit will remain open and the remaining trading floor pits will not reopen; no associated headcount or charge disclosed. Filing states only 'May 2021' for the announcement.
2021-03-31	restructuring	completed							USD 11 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Employee severance cost was higher during the first quarter of 2021 due to a higher reduction in workforce compared to the same period in 2020. Specific headcount affected is not disclosed.
2020-12-31	restructuring	completed						Legacy NEX businesses		MD&A f5-10k / GLM-5.3-flash-HTML	Headcount reduction at legacy NEX businesses in conjunction with the planned NEX integration; number of employees not disclosed. Cited as a primary driver of the lower bonus expense in 2020.
2020-12-31	other	completed						Commercial regulatory reporting operations (optimization business)		Item_1_Business f5-10k / GLM-5.3-flash-HTML	Wind-down of commercial regulatory reporting operations substantially completed in 2020; transitioned to self-reporting for EMEA BrokerTec and EBS while continuing U.S. (CFTC) and Canada reporting. Headcount impact not disclosed.
2020-12-31	other	announced			2021-01-12			Post-trade services (Traiana, TriOptima, Reset)		subsequent_events f5-10k / GLM-5.3-flash-HTML	Agreement with IHS Markit to combine post-trade services into a 50/50 joint venture incorporating CME's optimization businesses and IHS Markit's MarkitSERV; expected to close mid-2021 pending approvals. Net assets to be contributed were classified as held for sale in January 2021; workforce impact not disclosed.
2020-12-31	restructuring	in_progress					Global	Legacy NEX businesses		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	MD&A attributes lower 2020 bonus expense partly to headcount reduction in legacy NEX businesses during planned integration; no employee count or charge disclosed
2020-12-31	other	completed					Global (EMEA, U.S., Canada)	Optimization / commercial regulatory reporting		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Filer states it substantially completed wind-down of commercial regulatory reporting operations in 2020, transitioning to self-reporting; no headcount impact quantified
2020-12-31	other	announced			2021-01-12	2021-06-30	Global	Optimization businesses (Traiana, TriOptima, Reset)		subsequent_events f5-10k / MiMo-V2.6-Flash-fp8-HTML	Post-year-end agreement with IHS Markit to combine post-trade services into a 50/50 joint venture expected to close mid-2021; net assets classified as held for sale in January 2021; no employee count disclosed
2020-09-30	restructuring	in_progress						Company-wide (legacy NEX integration)		MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	MD&A attributes lower bonus expense to a headcount reduction tied to the planned integration of legacy NEX businesses; no employee count, announcement date, or severance charge disclosed.
2019-12-31	acquisition_addition	completed				2018-11-02	Global (NEX Group plc, primarily United Kingdom)	Cash markets (BrokerTec, EBS), optimization services, market data		business_combinations_footnote f5-10k / GLM-5.3-flash-HTML	Acquisition of NEX Group plc completed November 2, 2018, so the headcount addition occurred in Q4 of the prior fiscal year (FY2018), not during FY2019; no employee count was disclosed. FY2019 MD&A attributes increases in compensation, bonus, technology and occupancy expense to headcount added via the NEX acquisition.
2019-12-31	acquisition_addition	completed			2018-11-02	2018-11-02	Global	All		MD&A f5-10k / Qwen3.6-27B-Q8_0	Headcount added from the NEX acquisition in the fourth quarter of 2018 contributed to increased compensation and benefits expense in 2019.
2019-06-30	acquisition_addition	completed			2018-11-02		Global	All functions		MD&A f5-10q / Qwen3.6-27B-Q8_0	MD&A attributes increases in compensation, technology, occupancy, and bonus expenses to 'headcount added from the NEX acquisition in the fourth quarter of 2018.' Specific employee count not disclosed.
2019-06-30	other	completed	30,560		2019-06-30		Global	NEX employees		other f5-10q / Qwen3.6-27B-Q8_0	Issued 30,560 shares of Class A common stock to NEX employees in connection with awards under NEX's 2016 Global Sharesave Plan. This represents equity issuance to existing employees, not a headcount change, but is a material workforce-related event.
2019-03-31	acquisition_addition	in_progress			2018-11-02		Global (UK-headquartered NEX Group Limited)	Cash markets business (BrokerTec, EBS); market data and information services		MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	NEX acquisition closed 2018-11-02; MD&A attributes compensation, bonus, technology and occupancy expense increases to headcount added from NEX. Number of employees added is not quantified anywhere in the filing; integration into internal control over financial reporting was ongoing and NEX was excluded from the ICFR assessment as of 2019-03-31.
2018-12-31	acquisition_addition	completed				2018-11-02	United Kingdom (NEX Group plc, with international operations)	Cash markets business (BrokerTec fixed income, EBS foreign exchange) and optimization services (Traiana, TriOptima)		business_combinations_footnote f5-10k / GLM-5.3-flash-HTML	Acquisition of NEX Group plc completed November 2, 2018 for approximately $5.6 billion equity value; MD&A cites higher average headcount from acquired operations but the filing does not quantify employees added. Financial statements include NEX results beginning November 3, 2018.
2018-12-31	acquisition_addition	completed			2018-11-02	2018-11-02	United Kingdom; United States	Cash markets (BrokerTec, EBS) and optimization services (Traiana, TriOptima)		business_combinations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	NEX acquisition closed 2018-11-02; financial results consolidated from 2018-11-03. Filing does not disclose headcount added; NEX represented 10% of total assets at 2018-12-31 per the auditor's ICFR scope exclusion.
2018-09-30	acquisition_addition	completed			2018-03-01	2018-11-02	United Kingdom			subsequent_events f5-10q / MiMo-V2.6-Flash-fp8-HTML	Acquisition of NEX Group plc closed 2018-11-02 for approximately $5.6 billion equity value; no employee headcount added disclosed in this filing
2017-12-31	restructuring	completed			2017-04	2017-12	United Kingdom	European clearing house and exchange operations (CME Clearing Europe Limited and CME Europe Limited)		Item_1_Business f5-10k / GLM-5.3-flash-HTML	Wind-down of both European subsidiaries announced April 2017 and completed in late 2017. No employee count or associated charge disclosed; no severance or restructuring expense line identified for fiscal 2017.
2017-12-31	restructuring	announced			2017-09	2018-06		Credit default swaps business		Item_1_Business f5-10k / GLM-5.3-flash-HTML	Exit of the credit default swaps business announced September 2017, with completion expected by mid-2018 (month approximated from 'mid-2018'). No employee count disclosed. Note 4 states the disposal will not be classified as discontinued operations.
2017-12-31	plant_closure	completed			2017-04	2017-12-31	United Kingdom / Europe	CME Clearing Europe Limited and CME Europe Limited		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Wind down of European clearing house and exchange announced April 2017, completed by year end; no employee count or charge disclosed.
2017-12-31	restructuring	announced			2017-09	2018-06-30	Global	Credit default swaps business		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Company announced exit from credit default swap business by mid-2018; no employee count or charge disclosed. Not classified as discontinued operations.
2017-03-31	plant_closure	announced			2017-04	2017-12-31	Europe (United Kingdom)	CME Clearing Europe Limited and CME Europe Limited		subsequent_events f5-10q / MiMo-V2.6-Flash-fp8-HTML	April 2017 announcement of intent to close the European clearing house and exchange by end of 2017; no headcount impact or charge disclosed
2016-12-31	plant_closure	completed				2016-12-31	New York, United States	Open outcry trading floors (futures pits)		MD&A f5-10k / GLM-5.3-flash-HTML	Remaining New York open outcry pits closed December 31, 2016; additional severance and other costs recognized in 2016 but no discrete amount disclosed. Affected pit participants are largely exchange members rather than employees; most Chicago open outcry options markets remain open.
2016-12-31	restructuring	completed				2016-12-31	New York, United States	Trading floors / open outcry operations		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	Company recognized severance and other costs in 2016 for reducing its New York trading floors; no employee count or charge amount disclosed. Related Item 1 disclosure states the remaining open outcry pits in New York were closed on December 31, 2016.
2016-12-31	other	announced					United States	Executive leadership		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	CEO announced retirement at the end of 2016, resulting in additional cash and stock-based compensation expense during 2016; no headcount or amount quantified.
2016-12-31	restructuring	completed							USD 8 (millions)	MD&A f5-10k / Qwen3.6-27B-Q8_0	Reorganization, severance and retirement costs of $8.1 million recognized in 2016.
2016-03-31	restructuring	completed			2015-09-01				USD 6 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Reorganization costs of $5.5 million recognized in Q1 2016 related to reorganization announced in Q3 2015. Employee count not disclosed.
2015-12-31	plant_closure	completed			2015-07		Chicago, Illinois and New York, New York (United States)	Open outcry futures trading pits		Item_1_Business f5-10k / GLM-5.3-flash-HTML	Most futures pits in Chicago and New York were closed in July 2015; most open outcry options markets remained open. MD&A cites the partial trading floor closure (there described as second-quarter 2015) among the drivers of the decline in average headcount in 2015. No affected-employee count or associated charge disclosed.
2015-12-31	restructuring	completed			2015					MD&A f5-10k / GLM-5.3-flash-HTML	Reorganization announced in the third quarter of 2015. MD&A cites it, together with the Q4 2014 reorganization (a prior-year action excluded here) and the trading floor closure, as drivers of lower average headcount and lower compensation and benefits expense in 2015. No affected-employee count, charge, or completion date disclosed; headcount impact was realized during FY2015.
2015-12-31	restructuring	in_progress					Global	Company-wide		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	MD&A cites a reorganization announced in the third quarter of 2015 (along with one announced in the fourth quarter of 2014) as a driver of lower average headcount; no employee count, charge, or completion date is disclosed. Announcement date known only to the quarter.
2015-12-31	plant_closure	completed			2015-07		United States (Chicago and New York)	Open outcry trading floors		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Most futures pits in Chicago and New York were closed in July 2015; most open outcry options markets remained open. MD&A also attributes part of the 2015 headcount decline to partial trading-floor closure in the second quarter of 2015; no affected-employee count or charge disclosed.
2015-12-31	restructuring	completed	150		2014-10	2014-12-31	Global			MD&A f5-10k / Qwen3.6-27B-Q8_0	Global workforce reduction of approximately 150 positions as part of a reorganization in October 2014. Costs recognized in Q4 2014.
2015-12-31	voluntary_separation	completed			2014-06	2014-06-30				MD&A f5-10k / Qwen3.6-27B-Q8_0	Voluntary exit incentive plan implemented in the second quarter of 2014. Specific headcount not disclosed.
2015-09-30	plant_closure	completed				2015-06-30	United States	Trading floor operations		MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	MD&A states severance and other costs were recognized in Q2 2015 for closing the trading floor; no employee count or separate charge amount disclosed. MD&A also notes compensation expense declined partly from this closure.
2015-09-30	restructuring	in_progress					United States		USD 14 (millions)	MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Expense-driver table shows $13.6M for 'Reorganization costs and voluntary exit incentive plan' in Q3 2015 ($14.0M YTD); MD&A cites a reorganization in Q3 2015 and headcount declines from reorganizations announced in Q4 2014 and Q3 2015. No employee count disclosed; charge line combines reorganization and VSP items.
2015-09-30	restructuring	in_progress			2015-09-30					MD&A f5-10q / Qwen3.6-27B-Q8_0	MD&A references 'reorganizations announced in the fourth quarter of 2014 and the third quarter of 2015' as drivers for declines in average headcount and compensation expenses. No specific employee count or charge amount is disclosed for the Q3 2015 reorganization in this filing.
2015-09-30	plant_closure	completed				2015-06-30				MD&A f5-10q / Qwen3.6-27B-Q8_0	MD&A cites 'the closing of the trading floor in the second quarter of 2015' as a factor in decreased compensation and benefits expenses. No specific headcount impact is quantified.
2015-06-30	voluntary_separation	completed								MD&A f5-10q / Qwen3.6-27B-Q8_0	Filer recognized expenses due to voluntary exit incentive plan in Q2 2014; Q2 2015 expenses were lower by comparison. No specific headcount or charge amount disclosed for the current period.
2015-06-30	restructuring	completed								MD&A f5-10q / Qwen3.6-27B-Q8_0	Compensation and benefits expenses decreased in Q2 2015 due to declines in average headcount largely related to reorganization announced in Q4 2014. No specific headcount reduction number disclosed for the current period.
2015-03-31	restructuring	in_progress			2014-10	2015-06				MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Reorganization announced October 2014, with severance and other costs recognized in Q1 2015; MD&A also cites a planned reduction of trading floors in mid-2015 as a related cost driver. No employee count or total charge disclosed; MD&A attributes a $5.5 million year-over-year increase in operating expenses to reorganization costs (change amount, not a stated program charge).
2015-03-31	restructuring	in_progress			2014-10-01	2015-06-30			USD 6 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Severance and other costs related to reorganization announced in October 2014 and planned reduction of trading floors in mid-2015. Employee count not disclosed.
2014-12-31	reduction_in_force	completed	150		2014-10		Global		USD 18 (millions)	MD&A f5-10k / GLM-5.3-flash-HTML	Global reduction of approximately 150 positions as part of a reorganization announced October 2014; severance and related costs recognized in Q4 2014. The $18.2 million is a combined year-over-year expense change attributed to reorganization costs plus the voluntary exit incentive plan and is not split between the two actions. Severance plan amendments effective 2014-10-13 added a cost-reduction termination severance schedule tied to 2014-2015 budget cost-reduction efforts.
2014-12-31	voluntary_separation	completed			2014					MD&A f5-10k / GLM-5.3-flash-HTML	Voluntary exit incentive plan increased compensation and benefits expense in the second quarter of 2014; its share of the combined $18.2 million expense change (see related reduction-in-force record) is not separately disclosed.
2014-12-31	plant_closure	announced			2015-02	2015-07-02	Chicago, Illinois and New York, New York	Open outcry futures trading pits		Item_1_Business f5-10k / GLM-5.3-flash-HTML	Post-year-end announcement to close most futures trading pits by July 2, 2015, with most open outcry options markets remaining open. Pit participants are primarily exchange members rather than employees; no employee headcount impact is quantified.
2014-12-31	restructuring	completed	150		2014-10-01		Global	Not specified	USD 18 (millions)	MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	October 2014 reorganization reduced global workforce by approximately 150 positions; severance recognized in Q4 2014. The $18.2M charge combines reorganization costs and the voluntary exit incentive plan as presented in the expense-driver table.
2014-12-31	voluntary_separation	completed			2014-04-01		Not specified	Not specified		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	Voluntary exit incentive plan offered in Q2 2014; headcount and separate charge amounts not disclosed. Severance terms amended via Exhibit 10.16/10.17 effective 2014-10-13 for cost-reduction terminations.
2014-12-31	plant_closure	announced			2015-02-01	2015-07-02	United States (Chicago and New York)	Open outcry trading floors		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Subsequent-event announcement (February 2015) to close most futures trading pits by July 2, 2015; most open outcry options markets to remain open. No headcount impact quantified.
2014-12-31	restructuring	completed	150		2014-10		Global			MD&A f5-10k / Qwen3.6-27B-Q8_0	Global workforce reduction of approximately 150 positions as part of a reorganization announced in October 2014. Included in reorganization costs and voluntary exit incentive plan expenses.
2014-09-30	restructuring	announced	150		2014-10		Global			MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Post-quarter reorganization reduced global workforce by approximately 150 positions; severance and other costs expected to impact primarily Q4 2014. No charge amount or completion date disclosed.
2014-09-30	restructuring	announced	150		2014-10-01		Global			MD&A f5-10q / Qwen3.6-27B-Q8_0	Company reduced global workforce by approximately 150 positions as part of a recently announced reorganization. Severance and other costs expected to impact primarily Q4 2014.
2014-06-30	voluntary_separation	in_progress							USD 6 (millions)	MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	A voluntary exit incentive plan was implemented in the second quarter of 2014, adding $5.8 million to compensation and benefits expense in both the quarter and the six-month period. No participant count or completion date disclosed.
2014-06-30	acquisition_addition	announced			2014-07-30		Europe	Trading software (Trayport) and OTC FX options solutions (FENICS)		subsequent_events f5-10q / MiMo-V2.6-Flash-fp8-HTML	Agreement to acquire Trayport and FENICS from GFI Group Inc. via merger; GFI shareholders to receive Class A stock valued at about $580.0 million, with $165.0 million cash received for the brokerage business and $240.0 million of debt assumed. Expected to close early 2015; no headcount disclosed.
2014-06-30	voluntary_separation	completed							USD 6 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Voluntary exit incentive plan expense recognized in Q2 2014.
2013-12-31	other	completed				2013-04-30	United States	CME Clearing		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Kansas City Board of Trade Clearing Corporation integrated into U.S. clearing operations in April 2013 following the November 2012 KCBT acquisition; no headcount impact disclosed.
2013-12-31	other	completed				2013-12-16	United States	KCBT / CBOT exchanges		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Transfer of KCBT operations to CBOT completed December 16, 2013; KCBT permit holder rights extinguished. No employee counts or charges disclosed.
2013-06-30	voluntary_separation	completed			2012-04-01				USD 5 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	MD&A notes a decline in employee separation costs in Q2 2013 compared to Q2 2012, attributing it to a voluntary exit incentive plan announced in Q2 2012. The $4.6M decrease in separation costs for Q2 2013 implies lower charges than the prior year, but no specific headcount or current-quarter charge is disclosed.
2012-12-31	divestiture_reduction	completed			2012-06-29	2012-06-29		Index Services (DJI asset group contributed to S&P/Dow Jones Indices LLC)		MD&A f5-10k / GLM-5.3-flash-HTML	MD&A attributes part of the year's decrease in average headcount to the June 2012 contribution of the DJI asset group to the McGraw venture; number of affected employees not disclosed.
2012-12-31	divestiture_reduction	completed			2012-06-29	2012-06-29	United Kingdom (Credit Market Analysis Ltd., a UK-incorporated company)	Credit Market Analysis Ltd. (CMA), sold to McGraw		MD&A f5-10k / GLM-5.3-flash-HTML	MD&A attributes part of the year's decrease in average headcount to the Q2 2012 sale of CMA to McGraw; number of affected employees not disclosed.
2012-12-31	acquisition_addition	completed			2012-11-30	2012-11-30	United States (Kansas City, Missouri)	Agricultural commodities (hard red winter wheat); includes KCBTCC clearing house	USD 126 (millions)	business_combinations_footnote f5-10k / GLM-5.3-flash-HTML	CBOT purchased KCBT for $126.0 million in cash on November 30, 2012, adding its workforce (including wholly-owned clearing house KCBTCC); purchase price shown is cash consideration, not a workforce-related charge, and no employee count was disclosed.
2012-12-31	acquisition_addition	completed			2012-11-30		United States (Kansas City)	Agricultural commodities — hard red winter wheat futures		business_combinations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Purchased for $126.0 million cash; headcount added not disclosed. KCBTCC clearing house integration with CME Clearing expected April 2013.
2012-12-31	acquisition_addition	completed			2012-07		United States	Technology / customer relationships		other f5-10k / MiMo-V2.6-Flash-fp8-HTML	Acquisition of Pivot, Inc.; $17.0 million of intangible assets recognized. Headcount added not disclosed.
2012-12-31	acquisition_addition	completed					United States	Energy / environmental markets		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Green Exchange, LLC acquired and integrated into the energy product suite during the year; acquisition date and headcount not disclosed.
2012-12-31	divestiture_reduction	completed			2012-06-29		United States and United Kingdom	Index services (DJI asset group) and Credit Market Analysis Ltd.		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	MD&A attributes a decrease in average headcount to the contribution of the DJI asset group to S&P/DJI and the sale of CMA; no employee count disclosed.
2012-09-30	voluntary_separation	in_progress			2012-04-30					MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Voluntary exit incentive plan announced in Q2 2012; employee separation costs of $8.0 million recognized in the nine months ended 2012-09-30. No employee count, completion date, or program-specific charge disclosed.
2012-09-30	divestiture_reduction	completed			2012-06-29	2012-06-30		Index Services (Dow Jones Index asset group) and Credit Market Analysis Ltd.		MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Contribution of DJI asset group to S&P/Dow Jones Indices LLC venture and sale of CMA to McGraw; MD&A attributes a decrease in average headcount to these transactions, but no employee count is disclosed.
2012-09-30	acquisition_addition	announced			2012-10-31		United States	Kansas City Board of Trade		subsequent_events f5-10q / MiMo-V2.6-Flash-fp8-HTML	Definitive agreement to acquire the Kansas City Board of Trade entered into October 2012, subject to regulatory approval and customary closing conditions; no headcount disclosed.
2012-09-30	voluntary_separation	in_progress			2012-06-30				USD 8 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Voluntary exit incentive plan announced in the second quarter of 2012. $8.0 million in employee separation costs recognized in the first nine months of 2012.
2012-06-30	voluntary_separation	in_progress								MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Voluntary exit incentive plan announced in Q2 2012; MD&A cites it and related employee separation costs ($5.0M in Q2; $7.5M YTD) as drivers of expense increases. No employee count, charge allocation, or completion date disclosed.
2012-06-30	other	completed						Executive		MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	CEO transition resulted in accelerated vesting of stock-based compensation ($8.0M in Q2; $10.3M YTD); no headcount figures disclosed.
2012-06-30	voluntary_separation	in_progress			2012-04-01				USD 5 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Voluntary exit incentive plan announced in Q2 2012 resulted in $5.0 million expense for the quarter.
2012-06-30	voluntary_separation	in_progress			2012-04-01				USD 8 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Voluntary exit incentive plan announced in Q2 2012 resulted in $7.5 million expense for the six months ended June 30, 2012.
2011-12-31	divestiture_reduction	announced			2011-11	2012-06-30	United Kingdom	Credit Market Analysis Ltd. (CMA) / Index Services		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Agreement with McGraw-Hill to contribute Index Services assets and sell CMA; expected to close by June 2012 subject to regulatory approval. No employee count disclosed.
2010-12-31	acquisition_addition	completed			2010-03-18		United States	Index and market data services (Index Services joint venture with Dow Jones)		business_combinations_footnote f5-10k / GLM-5.3-flash-HTML	CBOT acquired 90% of Index Services, formed by contributing CBOT's market data business and Dow Jones' index business. MD&A attributes part of the 2010 average headcount increase to Index Services; employee count not disclosed.
2010-12-31	acquisition_addition	completed			2010-12		United Kingdom	Electronic trading and market technology		Item_1_Business f5-10k / GLM-5.3-flash-HTML	Acquired Elysian Systems Ltd., an independent electronic trading and market technology provider, in December 2010; headcount impact not disclosed.
2010-12-31	acquisition_addition	completed			2010-03-18	2010-03-18	United States	Market data and index services		business_combinations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Formation of CME Group Index Services LLC joint venture with Dow Jones; headcount added not disclosed. Average headcount increase attributed to Index Services contributed to higher compensation expense in 2010.
2010-12-31	acquisition_addition	completed			2010-12-01	2010-12-31	United Kingdom	Technology		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Acquisition of Elysian Systems Ltd., an electronic trading and market technology provider, in December 2010; headcount added not disclosed.
2010-12-31	other	completed					International (Asia, Europe, and other locations outside the United States)	Global client development, sales, and product management		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Headcount increased approximately 4% during 2010 to support key locations outside the United States, including additional overseas-based product heads; absolute number not disclosed.
2010-12-31	restructuring	in_progress							USD -600,000 (absolute)	restructuring_footnote f5-10k / no-ai-xblr
2010-09-30	acquisition_addition	completed			2010-03-18		United States	Market data and information services (CME Group Index Services LLC)		business_combinations_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	CBOT acquired 90% of Index Services, a joint venture with Dow Jones, formed by contributing CBOT's market data business and Dow Jones's index business; results consolidated from March 19, 2010. No employee count is disclosed for the contributed businesses.
2010-09-30	restructuring	in_progress							USD -500,000 (absolute)	restructuring_footnote f5-10q / no-ai-xblr
2010-06-30	restructuring	completed				2009-08-31		NYMEX Holdings	USD 0 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Restructuring program related to NYMEX Holdings merger was substantially complete by August 2009. Q2 2010 shows a credit of $0.2 million compared to expense in prior year.
2010-06-30	acquisition_addition	completed			2010-03-18			Index Services		MD&A f5-10q / Qwen3.6-27B-Q8_0	Increase in average headcount primarily due to the acquisition of Index Services contributed to an increase in expense.
2010-06-30	restructuring	in_progress							USD -500,000 (absolute)	restructuring_footnote f5-10q / no-ai-xblr
2010-03-31	restructuring	in_progress							USD -300,000 (absolute)	restructuring_footnote f5-10q / no-ai-xblr
2009-12-31	restructuring	completed			2007-08	2008-07	Chicago, Illinois	CBOT Holdings merger integration (exchange operations)	USD 11 (millions)	restructuring_footnote f5-10k / GLM-5.3-flash-HTML	Multi-year integration plan approved in August 2007 after the CBOT Holdings merger; included employee position reductions, closure of duplicate facilities and consolidation of trading technologies. Cumulative restructuring expense recorded under this plan through fiscal year-end 2009 was $11.2 million against total planned costs of $29.6 million (primarily severance, transitional payments and contract termination penalties). Cash payments substantially complete by July 2008. Number of employees affected not disclosed.
2009-12-31	restructuring	completed			2008-10	2009-08	Chicago, Illinois and New York City	NYMEX Holdings merger integration (exchange operations)	USD 8 (millions)	restructuring_footnote f5-10k / GLM-5.3-flash-HTML	Multi-year integration plan approved in October 2008 after the NYMEX Holdings merger; included employee position reductions and consolidation of trading and other technologies, including completion of the NYMEX/COMEX trading-floor consolidation in Q2 2009. Cumulative restructuring expense recorded under this plan through fiscal year-end 2009 was $7.8 million against total planned costs of $46.8 million (primarily severance, transitional payments and contract termination payments). Cash payments substantially complete by August 2009. Number of employees affected not disclosed. Company-wide FY2009 restructuring expense across plans was $5.3 million.
2009-12-31	restructuring	completed			2008-10	2009-08			USD 5 (millions)	restructuring_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	NYMEX merger-related restructuring approved October 2008; payments substantially complete by August 2009. Charge shown is total FY2009 restructuring expense per the income statement, covering both the CBOT and NYMEX merger plans. Footnote reports cumulative NYMEX-plan accrual of $36.6M severance plus $10.2M contract terminations through 2009-12-31, with $2.0M severance liability remaining at year-end. Employees affected not disclosed.
2009-12-31	restructuring	completed			2007-08	2008-07	Global	CBOT Holdings merger related	USD 30 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-Q8_0	Program substantially complete by July 2008. Total costs $29.6 million.
2009-12-31	restructuring	completed			2008-10	2009-08	Global	NYMEX Holdings merger related	USD 47 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-Q8_0	Program substantially complete by August 2009. Total costs $46.8 million.
2009-12-31	restructuring	in_progress							USD 5,300,000 (absolute)	restructuring_footnote f5-10k / no-ai-xblr
2009-09-30	restructuring	in_progress			2008-10				USD 47 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Program approved October 2008 after the NYMEX merger; involves position reductions and trading/technology consolidation. Total estimated costs of $47.3M, of which $39.1M was recognized in the purchase price allocation (goodwill) and $8.2M as expense; $7.8M expense recorded from inception through 2009-09-30. Cash payments substantially complete by August 2009 with a $2.8M severance liability remaining at quarter end. No employee count disclosed.
2009-09-30	acquisition_addition	completed	400		2008-08-22		United States			MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Approximately 400 employees added in the NYMEX Holdings merger (closed 2008-08-22, prior period); cited in this filing as the driver of year-over-year average headcount increases of about 180 employees (Q3) and about 270 employees (nine months), partially offset by restructuring. Count is approximate and stated as a driver, not a formal acquisition footnote disclosure.
2009-09-30	restructuring	completed			2007-08	2008-07		CBOT Holdings	USD 11 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	CBOT merger restructuring plan. Payments substantially complete by July 2008. Total expense recorded through Sept 30, 2009 was $11.2 million.
2009-09-30	restructuring	completed			2008-10	2009-08		NYMEX Holdings	USD 8 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	NYMEX merger restructuring plan. Payments substantially complete by August 2009. Total expense recorded through Sept 30, 2009 was $7.8 million.
2009-09-30	restructuring	in_progress							USD 600,000 (absolute)	restructuring_footnote f5-10q / no-ai-xblr
2009-06-30	restructuring	in_progress			2008-10-01	2009-08-31		NYMEX Holdings operations (former NYMEX Holdings employees)	USD 38 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Program approved October 2008 covering position reductions and trading technology consolidation; total estimated costs $37.6M, of which $28.9M recognized in NYMEX purchase accounting (increasing goodwill) and $8.7M expected as restructuring expense. $7.1M restructuring expense recorded since inception through June 30, 2009; $4.6M liability remains. Number of employees affected not disclosed. Announcement month stated as October 2008; exact day not disclosed.
2009-06-30	restructuring	completed			2007-08-01	2008-07-31		CBOT Holdings operations (post-merger integration)	USD 30 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Program approved August 2007 covering position reductions, duplicate facility closures and technology consolidation; total estimated costs $30.3M. Payments substantially complete by July 2008; $11.2M expense recorded since inception through June 30, 2009; $1.3M liability remains (severance $0.6M plus contract terminations $0.7M). Number of employees affected not disclosed. Announcement month stated as August 2007; exact day not disclosed.
2009-06-30	restructuring	in_progress			2007-08	2008-07	CBOT	Operations	USD 30 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	CBOT merger restructuring. Payments substantially complete by July 2008. Total estimated costs $30.3 million.
2009-06-30	restructuring	in_progress			2008-10	2009-08	NYMEX	Operations	USD 38 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	NYMEX merger restructuring. Includes reductions in employee positions and consolidation of technologies. Payments expected substantially complete by August 2009.
2009-03-31	restructuring	in_progress			2008-10	2009-08	United States	NYMEX Holdings operations	USD 38 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Approved October 2008 post-merger; covers employee position reductions and trading/technology consolidation. Of the $38.0M total estimated cost, $28.9M was recognized in NYMEX purchase accounting (increasing goodwill) and $9.1M is recognized as restructuring expense over transitional service periods. $3.0M expense recorded in Q1 2009; approximately $3.7M additional expense expected. No employee headcount affected is disclosed.
2009-03-31	restructuring	completed			2007-08	2008-07	United States	CBOT Holdings operations	USD 30 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Approved August 2007 post-merger; severance, facility closures and technology consolidation. Payments substantially complete by July 2008; $0.2M expense recorded in Q1 2009. No employee headcount affected is disclosed.
2009-03-31	acquisition_addition	completed	400		2008-03-17	2008-08-22	United States	NYMEX Holdings operations		MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Approximately 400 employees added via the NYMEX Holdings merger, which closed 2008-08-22 (prior to this reporting period); cited in current-quarter MD&A as the primary driver of the 17% average headcount increase. Average headcount rose by about 340 employees (17%) versus Q1 2008, partially offset by restructuring.
2009-03-31	restructuring	in_progress			2008-10-01	2009-08-31			USD 3 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	NYMEX restructuring program initiated in Oct 2008. Q1 2009 expense of $3.0M recorded. Total estimated costs $38.0M, primarily severance.
2009-03-31	restructuring	completed			2007-08-01	2008-07-31			USD 0 (millions)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	CBOT restructuring program. Payments substantially complete by July 2008. Q1 2009 expense of $0.2M recorded.
2008-12-31	restructuring	completed			2007-08	2008-07		Post-CBOT Holdings merger integration — reductions in employee positions, closure of duplicate facilities, consolidation of trading and other technologies	USD 30 (millions)	restructuring_footnote f5-10k / GLM-5.3-flash-HTML	Multi-year program initiated August 2007 after the CBOT Holdings merger; FY2008 component: $2.0 million restructuring expense recognized. Cumulative program: total estimated costs $30.1 million (severance and related costs ~$21.1 million accrued; contract terminations ~$8.9 million accrued), cash payments ~$28.3 million, remaining liability ~$1.7 million at 2008-12-31; payments substantially complete by July 2008. No employee headcount disclosed for the program.
2008-12-31	restructuring	in_progress			2008-10	2009-08		Post-NYMEX Holdings merger integration — reductions in employee positions and consolidation of trading and other technologies	USD 39 (millions)	restructuring_footnote f5-10k / GLM-5.3-flash-HTML	Approved and initiated October 2008 following the NYMEX Holdings merger. Total estimated costs $38.9 million, primarily severance and transitional payments: $29.3 million recognized as a liability in NYMEX purchase accounting (increase to goodwill) and $9.6 million expected over transitional employees' future service period; $2.8 million expense recorded through 2008-12-31. Severance accrual $32.1 million, cash payments $0.8 million, liability $31.3 million at year-end. Payments expected substantially complete by August 2009. No employee headcount disclosed.
2008-12-31	acquisition_addition	completed	400		2008-03-17	2008-08-22		NYMEX Holdings merger (energy and metals exchanges, including COMEX)		MD&A f5-10k / GLM-5.3-flash-HTML	Approximately 400 employees added upon completion of the NYMEX Holdings merger on August 22, 2008 (merger agreement dated March 17, 2008). Cited as a driver of the ~380 increase in average headcount during 2008.
2008-12-31	acquisition_addition	completed	50		2008-03-23	2008-03-23		Credit Market Analysis Limited (CMA) — UK-based credit derivatives market data provider		MD&A f5-10k / GLM-5.3-flash-HTML	Headcount increased by 50 employees as a result of the CMA acquisition completed March 23, 2008.
2008-12-31	other	completed	30		2009-01	2009-01		SEIU-represented service employees (SEIU Local 1 and 25) — group and associated responsibilities outsourced		Item_1_Business f5-10k / GLM-5.3-flash-HTML	Outsourcing of the ~30-employee SEIU group and associated responsibilities occurred in January 2009 — after the 2008 fiscal year-end but before filing. Effectively reduces union-represented headcount from the ~40 disclosed at 2008-12-31.
2008-12-31	restructuring	completed			2007-08	2008-07	United States	CBOT operations (redundant positions, duplicate facilities, technology consolidation)	USD 2 (millions)	restructuring_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Program initiated August 2007 following the CBOT merger; substantially complete by July 2008. Charge shown is FY2008 restructuring expense; total estimated program cost was $30.1 million with $1.7 million of liability remaining at 2008-12-31. Employees affected not disclosed.
2008-12-31	restructuring	in_progress			2008-10	2009-08	United States	NYMEX operations (redundant positions and technology consolidation)	USD 3 (millions)	restructuring_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Charge shown is restructuring expense recorded through 2008-12-31. Total estimated program cost $38.9 million, of which $29.3 million was recognized in purchase accounting (goodwill) and $9.6 million is expected to be expensed over transitional employees' future service periods; $31.3 million liability remained at 2008-12-31. Employees affected not disclosed.
2008-12-31	acquisition_addition	completed	400		2008-08-22	2008-08-22	United States	NYMEX Holdings / NYMEX and COMEX exchanges		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	Approximately 400 employees added through the NYMEX Holdings merger completed 2008-08-22; figure is from the average-headcount bridge.
2008-12-31	acquisition_addition	completed	50		2008-03-23	2008-03-23	United Kingdom	Credit Market Analysis Limited (market data)		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	Headcount increased by 50 employees as a result of the CMA acquisition in March 2008.
2008-12-31	other	completed	30		2009-01	2009-01	United States	Facilities/support services (SEIU-represented employees)		Item_1_Business f5-10k / MiMo-V2.6-Flash-fp8-HTML	Subsequent event: the SEIU-represented group (approximately 30 employees) and associated responsibilities were outsourced in January 2009, after fiscal year-end.
2008-12-31	restructuring	completed			2007-08	2008-07			USD 2 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-Q8_0	CBOT Holdings merger restructuring plan initiated in August 2007, substantially complete by July 2008. $2.0 million expense recognized in 2008.
2008-12-31	restructuring	in_progress			2008-10	2009-08			USD 3 (millions)	restructuring_footnote f5-10k / Qwen3.6-27B-Q8_0	NYMEX Holdings merger restructuring plan initiated in October 2008. $2.8 million expense recognized through December 31, 2008. Expected to be substantially complete by August 2009.
2008-12-31	acquisition_addition	completed	400		2008-08-22	2008-08-22				MD&A f5-10k / Qwen3.6-27B-Q8_0	Addition of approximately 400 employees from NYMEX Holdings merger.
2008-12-31	acquisition_addition	completed	50		2008-03-23	2008-03-23				MD&A f5-10k / Qwen3.6-27B-Q8_0	Headcount increased by 50 employees as a result of the CMA acquisition in March 2008.
2008-12-31	other	completed	30		2009-01	2009-01				Item_1_Business f5-10k / Qwen3.6-27B-Q8_0	Outsourced group of employees in the Service Employees International Union along with their associated responsibilities, representing approximately 30 employees. Occurred in January 2009 (subsequent event).
2008-09-30	acquisition_addition	completed	400		2008-03-17	2008-08-22	United States	Company-wide		MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Approximately 400 employees added through the NYMEX Holdings merger, which closed August 22, 2008; merger agreement dated March 17, 2008. Count is approximate per filer.
2008-09-30	restructuring	completed	370		2007-08	2008-07	United States	Company-wide	USD 30 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Post-CBOT merger restructuring (redundant positions, duplicate facility closures, technology consolidation); approximately 370 positions eliminated since August 2007 per MD&A. Total estimated restructuring costs of $30.3 million were substantially complete by July 2008; $2.1 million charged year to date in 2008. Position count is approximate per filer.
2008-09-30	restructuring	announced			2008-09-30		United States	Company-wide		restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Filer had not finalized restructuring plans for the NYMEX Holdings integration as of September 30, 2008 and intended to finalize and initiate the plan in Q4 2008; no employee count or charge disclosed. Related employee separation costs were being recognized in compensation expense pending plan initiation.
2008-09-30	divestiture_reduction	completed				2008-09-07	United States	CBOT metals trading products		other f5-10q / MiMo-V2.6-Flash-fp8-HTML	Sale of CBOT metals trading products, including open interest, to NYSE Euronext completed September 2008 (filing cites both September 5 and September 7, 2008); no associated headcount disclosed. Carrying amount approximately $28.0 million with a $2.8 million loss recognized.
2008-09-30	restructuring	completed	370		2007-08	2008-07			USD 30 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Workforce reduction plan initiated in August 2007 to eliminate redundant costs; substantially complete by July 2008.
2008-09-30	acquisition_addition	completed	690		2007-07					MD&A f5-10q / Qwen3.6-27B-Q8_0	Addition of approximately 690 employees as part of merger with CBOT Holdings in July 2007.
2008-09-30	acquisition_addition	completed	400		2008-08					MD&A f5-10q / Qwen3.6-27B-Q8_0	Addition of approximately 400 employees as part of merger with NYMEX Holdings in August 2008.
2008-06-30	restructuring	in_progress	350		2007-08	2008-07			USD 31 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Post-CBOT merger program approved August 2007: position reductions, duplicate facility closures and trading floor/technology consolidation. Approximately 350 positions eliminated cumulatively since August 2007 (stated as approximate; not quarter-specific). Total estimated restructuring costs of $30.5 million, of which $18.6 million was recognized as a purchase-price liability (allocated to goodwill) and $11.4 million is expensed over the post-merger service period; $10.9 million restructuring expense recorded through June 30, 2008; liability of $7.6 million remained at June 30, 2008. Trading floor consolidation completed May 2008; program substantially complete by July 2008. Announcement month only disclosed (August 2007).
2008-06-30	acquisition_addition	completed	50		2008-03-23	2008-03-23	United Kingdom			business_combinations_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Acquisition of Credit Market Analysis Limited (CMA) and its three subsidiaries closed March 23, 2008; results consolidated from March 24, 2008. Headcount figure is approximate and stated as of June 30, 2008. Separately, the July 12, 2007 CBOT Holdings merger added approximately 690 employees in July 2007 — outside this reporting period, noted here only as context for the year-over-year headcount change and not extracted as a workforce action.
2008-06-30	restructuring	in_progress			2007-08-01	2008-07-31	Global	Corporate / Operations	USD 2 (thousands)	restructuring_footnote f5-10q / Qwen3.6-27B-Q8_0	Post-merger restructuring approved Aug 2007 to eliminate redundant costs. Includes severance, contract terminations. Substantially complete by July 2008. H1 2008 expense $2.0M.
2008-06-30	acquisition_addition	completed	690		2007-07-12	2007-07-12	United States	All Functions		MD&A f5-10q / Qwen3.6-27B-Q8_0	Addition of approx 690 employees from CBOT Holdings merger in July 2007.
2008-06-30	reduction_in_force	in_progress	350		2007-08-01		Global	All Functions		MD&A f5-10q / Qwen3.6-27B-Q8_0	Ongoing workforce reduction plan eliminated approx 350 positions since August 2007.
2008-03-31	restructuring	in_progress			2007-08	2008-07-31	United States	Company-wide (duplicate facility closures, workforce reduction, technology consolidation)	USD 34 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	No single total affected-employee count is stated. MD&A reports approximately 250 positions eliminated since August 2007 and approximately 130 additional positions expected, a substantial portion in Q2 2008. Restructuring expense of $10.7 million recorded through March 31, 2008 (including $1.8 million in Q1 2008); approximately $1.1 million of additional expense expected in 2008. $21.1 million of the $33.5 million total was recognized as a liability in CBOT purchase accounting (recorded to goodwill). Footnote states program substantially complete by July 2008; MD&A states June 2008.
2008-03-31	acquisition_addition	completed	50		2008-03-23	2008-03-23	United Kingdom	Credit derivatives market data (Credit Market Analysis Limited)		business_combinations_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	CME Group acquired CMA on March 23, 2008 for a preliminary purchase price of $93.0 million; results consolidated from March 24, 2008. Headcount of approximately 50 employees is an estimate as of March 31, 2008 per MD&A.
2008-03-31	restructuring	in_progress			2007-08-01	2008-07-31			USD 2 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Program initiated Aug 2007 to eliminate redundant costs post-CBOT merger. Includes severance, retention bonuses, outplacement, and healthcare subsidies. ~130 additional positions expected to be eliminated in Q2 2008. Total estimated costs $33.5M.
2008-03-31	acquisition_addition	completed	50		2008-03-23	2008-03-23				MD&A f5-10q / Qwen3.6-27B-Q8_0	Acquisition of Credit Market Analysis Limited (CMA). Estimated 50 employees included in total headcount as of March 31, 2008.
2007-12-31	reduction_in_force	in_progress	380		2007-08	2008-06-30	United States	Company-wide — technology, administrative and trading floor operations	USD 23 (millions)	restructuring_footnote f5-10k / GLM-5.3-flash-HTML	Post-merger restructuring plan approved and initiated August 2007 to eliminate redundant costs following the CBOT Holdings merger. Approximately 180 positions eliminated during the third and fourth quarters of 2007; approximately 200 additional positions expected by June 2008, for 380 existing and open positions in total. Total expected severance and transitional payments of $22.7 million (2007 severance costs $19.6 million); 2007 restructuring expense of $8.9 million recorded in the income statement, with $21.1 million of total restructuring costs recognized as a liability in the CBOT purchase price allocation. Severance liability at December 31, 2007: $11.7 million (total accrued restructuring liability $22.4 million); cash severance payments of $7.9 million made in 2007. Restructuring payments substantially complete by July 2008.
2007-12-31	restructuring	in_progress			2007-08	2008-07-31	United States	Closure of duplicate facilities and consolidation of trading and other technologies (e-CBOT platform; trading floor consolidation to 141 West Jackson Boulevard, Chicago, planned for Q2 2008)	USD 11 (millions)	restructuring_footnote f5-10k / GLM-5.3-flash-HTML	Contract termination penalties component of the merger-related restructuring plan; 2007 restructuring costs of $10.4 million and total expected payments of $10.8 million. No employee count disclosed for this component.
2007-12-31	acquisition_addition	completed	690		2007-07-12		United States	Company-wide (CBOT Holdings operations)		MD&A f5-10k / GLM-5.3-flash-HTML	Approximately 690 employees added through the merger with CBOT Holdings (closed July 12, 2007), per the average headcount discussion; partially offset by a workforce reduction of about 180 employees during H2 2007. Employees of CBOT and C-B-T Corporation continuing employment with CME Group in 2008 were transferred to CME employment effective December 23, 2007.
2007-12-31	acquisition_addition	completed	690		2007-07-12	2007-07-12	United States	CBOT Holdings (all functions)		MD&A f5-10k / MiMo-V2.6-Flash-fp8-HTML	Approximately 690 employees added via the CBOT Holdings merger; offset in part by a workforce reduction of about 180 employees in Q3-Q4 2007, yielding average headcount growth of about 320 (23%) for the year.
2007-12-31	restructuring	in_progress	180		2007-08-31	2008-06-30	United States	Company-wide (staffing, technology and facilities consolidation)	USD 9 (millions)	restructuring_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	About 180 employees eliminated through December 31, 2007; approximately 200 additional positions expected to be eliminated by June 2008, for 380 total existing and open positions by mid-2008. Total estimated restructuring costs of $33.6M, of which $8.9M expense recorded in 2007 and $21.1M recognized in purchase price allocation (increasing goodwill). Payments substantially complete by July 2008. Program approved August 2007; announcement_date is approximate (month of approval).
2007-12-31	restructuring	in_progress	380		2007-07-12	2008-06-30	Chicago, Illinois	Technology and Administrative	USD 34 (millions)	MD&A f5-10k / Qwen3.6-27B-Q8_0	Staff reductions of 380 existing and open positions to be complete by mid-2008. Total estimated restructuring costs $33.6 million. $8.9 million expense recorded in 2007. Includes severance, contract terminations, and outplacement.
2007-09-30	restructuring	in_progress	380		2007-08	2008-06-30	United States	Company-wide	USD 33 (millions)	restructuring_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Post-merger plan to cut redundant costs; $33.1M total estimated costs, substantially complete by July 2008; $20.2M booked in purchase price (goodwill), $4.5M expense recorded through 2007-09-30, remaining $12.9M to be expensed over transitional service periods; MD&A states ~380 positions to be eliminated by June 2008
2007-09-30	acquisition_addition	completed	690		2007-07-12		United States	Company-wide		business_combinations_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	Approximately 690 employees added via CBOT Holdings merger effective 2007-07-12; drove 43% average headcount increase in Q3 versus prior-year quarter
2007-09-30	restructuring	in_progress	380		2007-08-01	2008-06-30	Global	Corporate / Operations	USD 33 (millions)	MD&A f5-10q / Qwen3.6-27B-Q8_0	Plan to close duplicate facilities and reduce workforce to improve operating efficiencies. Expected to eliminate approximately 380 positions by June 2008. Total estimated costs $33.1 million.
2007-09-30	acquisition_addition	completed	690		2007-07-13	2007-07-13	United States	All Functions		MD&A f5-10q / Qwen3.6-27B-Q8_0	Addition of approximately 690 employees from merger with CBOT Holdings.
2007-06-30	restructuring	announced						Merger-related staffing, technology and facilities plans		MD&A f5-10q / MiMo-V2.6-Flash-fp8-HTML	Filer states merger-related staffing, technology and facilities plans are being finalized and restructuring charges will begin in 2H 2007; charge amount and headcount impact stated as not determinable. No announcement date or affected-employee count disclosed.
2007-06-30	acquisition_addition	completed			2006-10-17	2007-07-12	United States	CBOT Holdings, Inc. (merged into CME Holdings)		subsequent_events f5-10q / MiMo-V2.6-Flash-fp8-HTML	Merger effective 2007-07-12, after the quarter covered by this report; CBOT financial results included from 2007-07-13. Number of CBOT employees added not disclosed. Related transaction costs of $57.3 million incurred through 2007-06-30 per Risk Factors.
2006-12-31	acquisition_addition	completed			2006-08-25	2006-08-25	United Kingdom	Swapstream (electronic interest rate swap trading platform)		MD&A f5-10k / GLM-5.3-flash-HTML	CME Swaps Marketplace Ltd acquired 100% of the Swapstream entities on August 25, 2006; the filing states this acquisition contributed to the 7% increase in average headcount during 2006. Number of employees added was not disclosed.
2006-12-31	acquisition_addition	announced			2006-10-17	2007-06	United States	CBOT Holdings / Chicago Board of Trade		Item_1_Business f5-10k / GLM-5.3-flash-HTML	Definitive merger agreement with CBOT Holdings; disclosed as expected to close by mid-year 2007, subject to shareholder, member and regulatory approvals. Integration contemplates consolidating the two trading floors, market data services and regulatory functions. Expected annual expense savings of more than $125 million in the second year post-close, largely from technology and administrative cost reductions and more efficient trading floor operations. No headcount figures disclosed.
2006-12-31	acquisition_addition	completed			2006-08-25	2006-08-25	United Kingdom	Swapstream interest rate swaps platform		business_combinations_footnote f5-10k / MiMo-V2.6-Flash-fp8-HTML	Acquisition of Swapstream completed August 25, 2006; MD&A notes the acquisition contributed to the 7% (87 employee) increase in average headcount during 2006. Headcount added not separately quantified.
2006-12-31	acquisition_addition	completed			2006-08-01	2006-08-31	Global	Technology	USD 18 (millions)	MD&A f5-10k / Qwen3.6-27B-Q8_0	Acquisition of Swapstream completed in August 2006 contributed to increase in average headcount. Specific headcount added not disclosed.
2006-09-30	acquisition_addition	completed			2006-08-25	2006-08-25	United Kingdom	Interest rate swaps trading platform (Swapstream)		business_combinations_footnote f5-10q / MiMo-V2.6-Flash-fp8-HTML	CME Holdings acquired Swapstream, an inter-dealer electronic trading platform. MD&A states the acquisition contributed to the Q3 increase in average headcount, but no employee count is disclosed.
2006-06-30	acquisition_addition	announced			2006-07-05		United Kingdom	Interest rate swaps trading platform (Swapstream)	USD 15 (millions)	subsequent_events f5-10q / MiMo-V2.6-Flash-fp8-HTML	Acquisition of Swapstream announced July 5, 2006; initial cost $15.0 million plus up to $20.2 million contingent consideration. No employee count disclosed; CME Swaps Marketplace Limited was established in June 2006 in conjunction with the pending acquisition.