10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

_________________________________________________________

FORM 10-Q

_________________________________________________________

(Mark One)

ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2016

- OR -

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                to                

Commission file number 001-31553

CME GROUP INC.

(Exact name of registrant as specified in its charter)

Delaware	36-4459170
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
20 South Wacker Drive, Chicago, Illinois	60606
(Address of principal executive offices)	(Zip Code)

(312) 930-1000

(Registrant’s telephone number, including area code)

Not Applicable

(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.            Yes  ý    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).                                                    Yes  ý    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer  x	Accelerated filer     o
Non-accelerated filer    o (Do not check if a smaller reporting company)	Smaller reporting company o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    

Yes  ¨    No  ý

The number of shares outstanding of each of the registrant’s classes of common stock as of July 13, 2016 was as follows: 338,851,977 shares of Class A common stock, $0.01 par value; 625 shares of Class B-1 common stock, $0.01 par value; 813 shares of Class B-2 common stock, $0.01 par value; 1,287 shares of Class B-3 common stock, $0.01 par value; and 413 shares of Class B-4 common stock, $0.01 par value.

1

CME GROUP INC.

FORM 10-Q

INDEX

		Page
PART I. FINANCIAL INFORMATION		3
Item 1.	Financial Statements	5
	Consolidated Balance Sheets at June 30, 2016 and December 31, 2015	5
	Consolidated Statements of Income for the Quarters and Six Months Ended June 30, 2016 and 2015	6
	Consolidated Statements of Comprehensive Income for the Quarters and Six Months Ended June 30, 2016 and 2015	7
	Consolidated Statements of Equity for the Six Months Ended June 30, 2016 and 2015	8
	Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2016 and 2015	10
	Notes to Unaudited Consolidated Financial Statements	11
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	18
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	27
Item 4.	Controls and Procedures	27
PART II. OTHER INFORMATION		28
Item 1.	Legal Proceedings	28
Item 1A.	Risk Factors	28
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	28
Item 4.	Mine Safety Disclosures	28
Item 6.	Exhibits	29
SIGNATURES		30

2

PART I. FINANCIAL INFORMATION

Certain Terms

Unless otherwise indicated, references to CME Group Inc. (CME Group or the company) products include references to products listed on one of its regulated exchanges: Chicago Mercantile Exchange Inc. (CME), Board of Trade of the City of Chicago, Inc. (CBOT), New York Mercantile Exchange, Inc. (NYMEX) and Commodity Exchange, Inc. (COMEX). Products listed on these exchanges are subject to the rules and regulations of the particular exchange and the applicable rulebook should be consulted. Unless otherwise indicated, references to NYMEX include its subsidiary, COMEX.

All references to “options” or “options contracts” in the text of this document refer to options on futures contracts.

Further information about CME Group and its products can be found at http://www.cmegroup.com. Information made available on our website does not constitute a part of this Quarterly Report on Form 10-Q.

Information about Contract Volume and Average Rate per Contract

All amounts regarding contract volume and average rate per contract exclude our interest rate swaps and credit default swaps contracts.

Trademark Information

CME Group is a trademark of CME Group Inc. The Globe logo, CME, Chicago Mercantile Exchange, Globex and E-mini are trademarks of Chicago Mercantile Exchange Inc. CBOT, Chicago Board of Trade, KCBT and Kansas City Board of Trade are trademarks of Board of Trade of the City of Chicago, Inc. NYMEX, New York Mercantile Exchange and ClearPort are trademarks of New York Mercantile Exchange, Inc. COMEX is a trademark of Commodity Exchange, Inc. Dow Jones, Dow Jones Industrial Average, S&P 500 and S&P are service and/or trademarks of Dow Jones Trademark Holdings LLC, Standard & Poor's Financial Services LLC and S&P/Dow Jones Indices LLC, as the case may be, and have been licensed for use by Chicago Mercantile Exchange Inc. All other trademarks are the property of their respective owners.

Forward-Looking Statements

From time to time, in this Quarterly Report on Form 10-Q as well as in other written reports and verbal statements, we discuss our expectations regarding future performance. These forward-looking statements are identified by their use of terms and phrases such as “believe,” “anticipate,” “could,” “estimate,” “intend,” “may,” “plan,” “expect” and similar expressions, including references to assumptions. These forward-looking statements are based on currently available competitive, financial and economic data, current expectations, estimates, forecasts and projections about the industries in which we operate and management's beliefs and assumptions. These statements are not guarantees of future performance and involve risks, uncertainties and assumptions that are difficult to predict. Therefore, actual outcomes and results may differ materially from what is expressed or implied in any forward-looking statements. We want to caution you not to place undue reliance on any forward-looking statements. We undertake no obligation to publicly update any forward-looking statements, whether as a result of new information, future events or otherwise. Among the factors that might affect our performance are:

• increasing competition by foreign and domestic entities, including increased competition from new entrants into our markets and consolidation of existing entities;

• our ability to keep pace with rapid technological developments, including our ability to complete the development, implementation and maintenance of the enhanced functionality required by our customers while maintaining reliability and ensuring that such technology is not vulnerable to security risks;

• our ability to continue introducing competitive new products and services on a timely, cost-effective basis, including through our electronic trading capabilities, and our ability to maintain the competitiveness of our existing products and services, including our ability to provide effective services to the swaps market;

• our ability to adjust our fixed costs and expenses if our revenues decline;

• our ability to maintain existing customers, develop strategic relationships and attract new customers;

• our ability to expand and offer our products outside the United States;

• changes in domestic and non-U.S. regulations, including the impact of any changes in domestic and foreign laws or government policy with respect to our industry, such as any changes to regulations and policies that require increased financial and operational resources from us or our customers;

• the costs associated with protecting our intellectual property rights and our ability to operate our business without violating the intellectual property rights of others;

• decreases in revenue from our market data as a result of decreased demand;

3

• changes in our rate per contract due to shifts in the mix of the products traded, the trading venue and the mix of customers (whether the customer receives member or non-member fees or participates in one of our various incentive programs) and the impact of our tiered pricing structure;

• the ability of our financial safeguards package to adequately protect us from the credit risks of clearing members;

• the ability of our compliance and risk management methods to effectively monitor and manage our risks, including our ability to prevent errors and misconduct and protect our infrastructure against security breaches and misappropriation of our intellectual property assets;

• changes in price levels and volatility in the derivatives markets and in underlying equity, foreign exchange, interest rate and commodities markets;

• economic, political and market conditions, including the volatility of the capital and credit markets and the impact of economic conditions on the trading activity of our current and potential customers;

• our ability to accommodate increases in contract volume and order transaction traffic and to implement enhancements without failure or degradation of the performance of our trading and clearing systems;

• our ability to execute our growth strategy and maintain our growth effectively;

• our ability to manage the risks and control the costs associated with our strategy for acquisitions, investments and alliances;

• our ability to continue to generate funds and/or manage our indebtedness to allow us to continue to invest in our business;

• industry and customer consolidation;

• decreases in trading and clearing activity;

• the imposition of a transaction tax or user fee on futures and options on futures transactions and/or repeal of the 60/40 tax treatment of such transactions; and

• the unfavorable resolution of material legal proceedings.

For a detailed discussion of these and other factors that might affect our performance, see Item 1A. of our Annual Report on Form 10-K, filed with the Securities and Exchange Commission on February 26, 2016 and Item 1A. of this Quarterly Report on Form 10-Q.

4

ITEM 1. FINANCIAL STATEMENTS

CME GROUP INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(dollars in millions, except par value data; shares in thousands)

(unaudited)

	June 30, 2016		December 31, 2015
Assets
Current Assets:
Cash and cash equivalents	$	1,161.1	$	1,692.6
Marketable securities	79.8		72.5
Accounts receivable, net of allowance of $3.7 and $1.9	427.0		357.8
Other current assets (includes $30.0 and $32.0 in restricted cash)	220.7		228.6
Performance bonds and guaranty fund contributions	36,138.6		35,553.0
Total current assets	38,027.2		37,904.5
Property, net of accumulated depreciation and amortization of $655.3 and $788.6	437.9		491.7
Intangible assets—trading products	17,175.3		17,175.3
Intangible assets—other, net	2,489.9		2,537.9
Goodwill	7,569.0		7,569.0
Other assets (includes $65.7 and $70.5 in restricted cash)	1,926.3		1,681.0
Total Assets	$	67,625.6	$	67,359.4
Liabilities and Equity
Current Liabilities:
Accounts payable	$	35.6	$	28.7
Other current liabilities	246.8		1,242.8
Performance bonds and guaranty fund contributions	36,137.4		35,553.0
Total current liabilities	36,419.8		36,824.5
Long-term debt	2,230.2		2,229.3
Deferred income tax liabilities, net	7,352.7		7,358.3
Other liabilities	549.0		395.5
Total Liabilities	46,551.7		46,807.6
Shareholders’ Equity:
Preferred stock, $0.01 par value, 10,000 shares authorized at June 30, 2016 and December 31, 2015; none issued	—		—
Class A common stock, $0.01 par value, 1,000,000 shares authorized at June 30, 2016 and December 31, 2015; 337,448 and 336,938 shares issued and outstanding as of June 30, 2016 and December 31, 2015, respectively	3.4		3.4
Class B common stock, $0.01 par value, 3 shares authorized, issued and outstanding as of June 30, 2016 and December 31, 2015	—		—
Additional paid-in capital	17,767.9		17,721.6
Retained earnings	3,189.3		2,907.6
Accumulated other comprehensive income (loss)	113.3		(80.8		)
Total shareholders’ equity	21,073.9		20,551.8
Total Liabilities and Equity	$	67,625.6	$	67,359.4

See accompanying notes to unaudited consolidated financial statements.

5

CME GROUP INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME

(dollars in millions, except per share data; shares in thousands)

(unaudited)

	Quarter Ended						Six Months Ended
	June 30,						June 30,
	2016			2015			2016			2015
Revenues
Clearing and transaction fees	$	767.6		$	681.8		$	1,563.7		$	1,390.0
Market data and information services	102.9			102.8			205.3			200.8
Access and communication fees	22.3			21.5			43.9			42.8
Other	13.6			13.9			27.7			29.1
Total Revenues	906.4			820.0			1,840.6			1,662.7
Expenses
Compensation and benefits	131.7			141.5			263.6			282.8
Communications	6.3			6.6			13.0			14.2
Technology support services	17.7			16.1			35.1			31.7
Professional fees and outside services	39.0			27.7			70.7			56.8
Amortization of purchased intangibles	24.0			25.0			48.0			49.9
Depreciation and amortization	30.4			33.3			64.3			65.1
Occupancy and building operations	24.4			23.5			45.7			46.3
Licensing and other fee agreements	32.8			28.8			71.8			59.4
Other	36.8			22.4			91.2			54.1
Total Expenses	343.1			324.9			703.4			660.3
Operating Income	563.3			495.1			1,137.2			1,002.4
Non-Operating Income (Expense)
Investment income	17.2			18.5			34.8			24.2
Gains (losses) on derivative investments	—			—			—			(1.8		)
Interest and other borrowing costs	(31.0		)	(28.6		)	(60.8		)	(60.2		)
Equity in net earnings (losses) of unconsolidated subsidiaries	27.0			26.0			53.8			48.5
Other non-operating income (expense)	(10.4		)	(62.9		)	(20.4		)	(41.2		)
Total Non-Operating	2.8			(47.0		)	7.4			(30.5		)
Income before Income Taxes	566.1			448.1			1,144.6			971.9
Income tax provision	246.0			183.1			456.7			376.5
Net Income	$	320.1		$	265.0		$	687.9		$	595.4
Earnings per Common Share:
Basic	$	0.95		$	0.79		$	2.04		$	1.77
Diluted	0.95			0.78			2.03			1.76
Weighted Average Number of Common Shares:
Basic	337,289			336,036			337,152			335,859
Diluted	338,706			337,796			338,599			337,574

See accompanying notes to unaudited consolidated financial statements.

6

CME GROUP INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in millions)

(unaudited)

	Quarter Ended						Six Months Ended
	June 30,						June 30,
	2016			2015			2016			2015
Net income	$	320.1		$	265.0		$	687.9		$	595.4
Other comprehensive income (loss), net of tax:
Investment securities:
Net unrealized holding gains (losses) arising during the period	85.8			36.9			195.4			9.2
Reclassification of net (gains) losses on sales included in investment income	—			(6.0		)	—			(6.0		)
Income tax benefit (expense)	0.2			1.2			(0.6		)	1.2
Investment securities, net	86.0			32.1			194.8			4.4
Defined benefit plans:
Net change in defined benefit plans arising during the period	—			—			3.1			(0.3		)
Amortization of net actuarial (gains) losses included in compensation and benefits expense	0.8			0.7			1.6			1.4
Income tax benefit (expense)	(0.3		)	(0.2		)	(1.8		)	(0.4		)
Defined benefit plans, net	0.5			0.5			2.9			0.7
Derivative investments:
Net unrealized holding gains (losses) arising during the period	—			—			—			(4.7		)
Ineffectiveness on cash flow hedges included in (gains) losses on derivative investments	—			—			—			1.8
Amortization of effective portion of net (gains) losses on cash flow hedges included in interest expense	(0.3		)	(0.3		)	(0.6		)	(0.6		)
Income tax benefit (expense)	0.1			0.2			0.2			1.4
Derivative investments, net	(0.2		)	(0.1		)	(0.4		)	(2.1		)
Foreign currency translation:
Foreign currency translation adjustments	(1.7		)	(2.6		)	(5.0		)	(6.6		)
Income tax benefit (expense)	0.6			1.0			1.8			2.5
Foreign currency translation, net	(1.1		)	(1.6		)	(3.2		)	(4.1		)
Other comprehensive income (loss), net of tax	85.2			30.9			194.1			(1.1		)
Comprehensive Income	$	405.3		$	295.9		$	882.0		$	594.3

See accompanying notes to unaudited consolidated financial statements.

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CME GROUP INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF EQUITY

(dollars in millions, except per share data; shares in thousands)

(unaudited)

	Class A Common Stock (Shares)	Class B Common Stock (Shares)	Common Stock and Additional Paid-in Capital			Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Total Shareholders’ Equity
Balance at December 31, 2015	336,938	3	$	17,725.0		$	2,907.6		$	(80.8	)	$	20,551.8
Net income						687.9						687.9
Other comprehensive income (loss)									194.1			194.1
Dividends on common stock of $1.20 per share						(406.2		)				(406.2		)
Exercise of stock options	292		20.0									20.0
Excess tax benefits from option exercises and restricted stock vesting			3.4									3.4
Vesting of issued restricted Class A common stock	181		(10.5		)							(10.5		)
Shares issued to Board of Directors	27		2.5									2.5
Shares issued under Employee Stock Purchase Plan	10		0.9									0.9
Stock-based compensation			30.0									30.0
Balance at June 30, 2016	337,448	3	$	17,771.3		$	3,189.3		$	113.3		$	21,073.9

See accompanying notes to unaudited consolidated financial statements.

8

CME GROUP INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF EQUITY (continued)

(dollars in millions, except per share data; shares in thousands)

(unaudited)

	Class A Common Stock (Shares)	Class B Common Stock (Shares)	Common Stock and Additional Paid-in Capital			Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Total Shareholders’ Equity
Balance at December 31, 2014	335,452	3	$	17,600.0		$	3,317.3		$	6.2		$	20,923.5
Net income						595.4						595.4
Other comprehensive income (loss)									(1.1		)	(1.1		)
Dividends on common stock of $1.00 per share						(337.2		)				(337.2		)
Exercise of stock options	652		42.1									42.1
Excess tax benefits from option exercises and restricted stock vesting			1.3									1.3
Vesting of issued restricted Class A common stock	46		(2.3		)							(2.3		)
Shares issued to Board of Directors	26		2.4									2.4
Shares issued under Employee Stock Purchase Plan	10		1.0									1.0
Stock-based compensation			33.7									33.7
Balance at June 30, 2015	336,186	3	$	17,678.2		$	3,575.5		$	5.1		$	21,258.8

See accompanying notes to unaudited consolidated financial statements.

9

CME GROUP INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions)

(unaudited)

	Six Months Ended June 30,
	2016			2015
Cash Flows from Operating Activities
Net income	$	687.9		$	595.4
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	30.0			33.7
Amortization of purchased intangibles	48.0			49.9
Depreciation and amortization	64.3			65.1
Gain on sale of BM&FBOVESPA shares	—			(5.9		)
Debt prepayment costs	—			61.8
Loss on datacenter	27.1			—
Undistributed earnings, net of losses, of unconsolidated subsidiaries	(3.3		)	(5.3		)
Deferred income taxes	22.0			41.3
Change in:
Accounts receivable	(71.1		)	(58.4		)
Other current assets	6.0			8.1
Other assets	(20.3		)	(15.1		)
Accounts payable	6.8			(14.8		)
Income taxes payable	(12.8		)	(55.5		)
Other current liabilities	(41.3		)	(26.2		)
Other liabilities	(5.3		)	(0.1		)
Other	5.2			3.7
Net Cash Provided by Operating Activities	743.2			677.7
Cash Flows from Investing Activities
Proceeds from maturities of available-for-sale marketable securities	36.4			19.1
Purchases of available-for-sale marketable securities	(40.3		)	(19.2		)
Purchases of property, net	(39.6		)	(60.7		)
Investments in business ventures	(3.8		)	(5.0		)
Proceeds from sale of BM&FBOVESPA shares	—			57.7
Settlement of derivative related to debt issuance	—			7.0
Net Cash Used in Investing Activities	(47.3		)	(1.1		)
Cash Flows from Financing Activities
Proceeds from debt, net of issuance costs	—			743.7
Repayment of debt	—			(673.0		)
Cash dividends	(1,381.7		)	(1,006.7		)
Proceeds from finance lease obligation	130.0			—
Proceeds from exercise of stock options	20.0			42.1
Excess tax benefits related to employee option exercises and restricted stock vesting	3.4			1.3
Other	0.9			0.9
Net Cash Used in Financing Activities	(1,227.4		)	(891.7		)
Net change in cash and cash equivalents	(531.5		)	(215.1		)
Cash and cash equivalents, beginning of period	1,692.6			1,366.1
Cash and Cash Equivalents, End of Period	$	1,161.1		$	1,151.0
Supplemental Disclosure of Cash Flow Information
Income taxes paid	$	410.3		$	393.3
Interest paid	42.4			46.3

See accompanying notes to unaudited consolidated financial statements.

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NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

1. Basis of Presentation

The consolidated financial statements consist of CME Group Inc. (CME Group) and its subsidiaries (collectively, the company), including Chicago Mercantile Exchange Inc. (CME), Board of Trade of the City of Chicago, Inc. (CBOT), New York Mercantile Exchange, Inc. (NYMEX), Commodity Exchange, Inc. (COMEX), CME Clearing Europe Limited (CMECE) and CME Europe Limited (CME Europe). CME, CBOT, NYMEX, COMEX, CMECE and CME Europe and their subsidiaries are referred to collectively as “the exchange” in the notes to the consolidated financial statements. The clearing houses include CME Clearing, which is the U.S. clearing house and a division of CME, and CMECE.

The accompanying interim consolidated financial statements have been prepared by CME Group without audit. Certain notes and other information normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States have been condensed or omitted. In the opinion of management, the accompanying consolidated financial statements include all normal recurring adjustments considered necessary to present fairly the financial position of the company at June 30, 2016 and December 31, 2015 and the results of operations and cash flows for the periods indicated. Quarterly results are not necessarily indicative of results for any subsequent period.

The accompanying consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto in CME Group’s Annual Report on Form 10-K for the year ended December 31, 2015, filed with the Securities and Exchange Commission (SEC) on February 26, 2016.

2. Performance Bonds and Guaranty Fund Contributions

Performance Bonds and Guaranty Fund Contributions. At June 30, 2016, performance bonds and guaranty fund contribution assets on the consolidated balance sheets include cash as well as U.S. Treasury securities and U.S. government agency securities with maturity dates of 90 days or less. U.S. Treasury securities and U.S. government agency securities are purchased by CME, at its discretion, using cash collateral. The benefits, including interest earned, and risks of ownership accrue to CME. Interest earned is included in investment income on the consolidated statements of income. These securities are classified as available-for-sale. At June 30, 2016, the amortized cost and fair value of the U.S. Treasury securities were $6,952.0 million and $6,952.3 million, respectively. At June 30, 2016, the amortized cost and fair value of the U.S. government securities were both $1,708.4 million. The U.S. Treasury securities and U.S. government agency securities will mature in the third quarter of 2016. Performance bonds and guaranty fund contribution assets also include overnight reverse repurchase agreements that were purchased by CME, at its discretion, using cash collateral. The fair value of the overnight securities under the reverse repurchase agreements was $200.9 million at June 30, 2016.

CME has been designated as a systemically important financial market utility by the Financial Stability Oversight Council and is authorized to establish and maintain a cash account at the Federal Reserve Bank of Chicago. CME has received approval to establish this account at the Federal Reserve Bank of Chicago for clearing members proprietary cash balances; however, the account is not live yet and CME continues to work through the operational details to begin utilizing the account.

Clearing House Contract Settlement. CME Clearing and CMECE mark-to-market open positions for all futures and options contracts twice a day (once a day for CME's cleared-only credit default swap and interest rate swap contracts). Based on values derived from the mark-to-market process, CME Clearing and CMECE require payments from clearing firms whose positions have lost value and make payments to clearing firms whose positions have gained value. Under the extremely unlikely scenario of simultaneous default by every clearing firm who has open positions with unrealized losses, the maximum exposure related to positions other than cleared-only credit default and interest rate swap contracts would be one half day of changes in fair value of all open positions, before considering the clearing houses' ability to access defaulting clearing firms' collateral deposits. For CME's cleared-only credit default swap and interest rate swap contracts, the maximum exposure related to CME Clearing's guarantee would be one full day of changes in fair value of all open positions, before considering CME Clearing's ability to access defaulting clearing firms' collateral. During the first six months of 2016, CME Clearing and CMECE transferred an average of approximately $3.6 billion a day through their clearing systems for settlement from clearing firms whose positions had lost value to clearing firms whose positions had gained value. CME Clearing and CMECE reduce their guarantee exposure through initial and maintenance performance bond requirements and mandatory guaranty fund contributions. The company believes that its guarantee liability is immaterial and therefore has not recorded any liability at June 30, 2016.

3. Property

In March 2016, the company sold its datacenter in the Chicago area for $130.0 million. At the time of the sale, the company leased back a portion of the property. The sale-leaseback transaction was recognized under the financing method and not as a sale-leaseback arrangement under generally accepted accounting principles due to the company's participation in future revenues and development work, which constitutes continuing involvement in the datacenter. Under the financing method, the assets remain on the consolidated balance sheet throughout the term of the lease and the proceeds of $130.0 million from the

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transaction are recognized as a finance lease obligation within other liabilities and other current liabilities in the consolidated balance sheet. A portion of the lease payments will be recognized as a reduction of the finance lease obligation and a portion will be recognized as interest expense based on an imputed interest rate.

The net cost basis of the property and equipment legally sold was $153.1 million at the date of the sale. At March 31, 2016, the company wrote down the property and equipment to a fair value of $130.0 million based on qualitative indications of impairment and a quantitative analysis based on undiscounted cash flows. The company recognized a net loss on the transaction of $27.1 million through other expenses, which includes the write down to fair value and certain other transaction-related costs. The company recognized a total net loss and expenses of $28.6 million, which also includes $1.5 million of legal and other fees incurred. The property and equipment legally sold will continue to be recognized on the consolidated balance sheets and will continue to be depreciated on the consolidated statements of income over the term of the lease.

The lease has an initial lease term ending in March 2031 and contains two consecutive renewal options for five years. Future minimum lease payments under this non-cancellable lease will be payable as follows as of June 30, 2016 (in millions):

Year
Remainder of 2016	$	8.3
2017	16.7
2018	16.8
2019	16.8
2020	16.9
Thereafter	181.6
Total	$	257.1

4. Intangible Assets

Intangible assets consisted of the following at June 30, 2016 and December 31, 2015:

	June 30, 2016							December 31, 2015
(in millions)	Assigned Value		Accumulated Amortization			Net Book Value		Assigned Value		Accumulated Amortization			Net Book Value
Amortizable Intangible Assets:
Clearing firm, market data and other customer relationships	$	2,838.8	$	(801.8	)	$	2,037.0	$	2,838.8	$	(754.5	)	$	2,084.3
Technology-related intellectual property	29.4		(27.9		)	1.5		29.4		(27.2		)	2.2
Other	2.4		(1.0		)	1.4		2.4		(1.0		)	1.4
Total amortizable intangible assets	$	2,870.6	$	(830.7	)	2,039.9		$	2,870.6	$	(782.7	)	2,087.9
Indefinite-Lived Intangible Assets:
Trade names						450.0							450.0
Total intangible assets – other, net						$	2,489.9						$	2,537.9
Trading products (1)						$	17,175.3						$	17,175.3

(1) Trading products represent futures and options products acquired in our business combinations with CBOT Holdings, Inc., NYMEX Holdings, Inc. and The Board of Trade of Kansas City, Missouri, Inc. Clearing and transaction fees are generated through the trading of these products. These trading products, most of which have traded for decades, require authorization from the Commodity Futures Trading Commission (CFTC). Product authorizations from the CFTC have no term limits.

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Total amortization expense for intangible assets was $24.0 million and $25.0 million for the quarters ended June 30, 2016 and 2015, respectively. Total amortization expense for intangible assets was $48.0 million and $49.9 million for the six months ended June 30, 2016 and 2015, respectively. As of June 30, 2016, the future estimated amortization expense related to amortizable intangible assets is expected to be as follows:

(in millions)	Amortization Expense
Remainder of 2016	$	48.1
2017	95.5
2018	94.7
2019	94.7
2020	94.7
2021	94.7
Thereafter	1,517.5

5. Debt

In the first quarter of 2016, the company adopted the Financial Accounting Standards Board's (FASB) standards update on changes to the presentation of debt issuance costs. The update requires debt issuance costs related to a recognized debt liability to be presented as a deduction from the carrying value of the debt liability. Previously, debt issuance costs were recognized as deferred charges within other assets in the consolidated balance sheets. The standards update was applied on a retrospective basis, adjusting all prior periods presented, as if the new accounting methodology was in effect during those periods. At December 31, 2015, $12.1 million of debt issuance costs were reclassified in the consolidated balance sheet from other assets to long-term debt compared with what was previously reported. At June 30, 2016, $11.6 million of debt issuance costs were deducted from long-term debt. The change in accounting policy has been reflected in the table below.

Long-term debt consisted of the following at June 30, 2016 and December 31, 2015:

(in millions)	June 30, 2016		December 31, 2015
$750.0 million fixed rate notes due September 2022, stated rate of 3.00% (1)	$	744.8	$	744.4
$750.0 million fixed rate notes due March 2025, stated rate of 3.00% (2)	743.8		743.4
$750.0 million fixed rate notes due September 2043, stated rate of 5.30% (3)	741.6		741.5
Total long-term debt	$	2,230.2	$	2,229.3

(1) In August 2012, the company entered into a forward-starting interest rate swap agreement that modified the interest obligation associated with these notes so that the interest payable on the notes effectively became fixed at a rate of 3.32%.

(2) In December 2014, the company entered into a forward-starting interest rate swap agreement that modified the interest obligation associated with these notes so that the interest payable on the notes effectively became fixed at a rate of 3.11%.

(3) In August 2012, the company entered into a forward-starting interest rate swap agreement that modified the interest obligation associated with these notes so that the interest payable on the notes effectively became fixed at a rate of 4.73%.

Long-term debt maturities, at par value, were as follows at June 30, 2016:

(in millions)	Par Value
2017	$	—
2018	—
2019	—
2020	—
2021	—
Thereafter	2,250.0

6. Income Taxes

In the first quarter of 2016, the company adopted the FASB's standards update that simplifies the classification of deferred tax assets and liabilities. The update eliminates the current requirement to present deferred tax assets and liabilities as current and

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non-current in a classified balance sheet. Instead, all deferred tax assets, along with valuation allowances, and deferred tax liabilities are required to be classified as non-current. Companies are still required to offset deferred tax assets and liabilities for each taxpaying component within a tax jurisdiction. Beginning in the first quarter of 2016, the company adopted this standards update on a prospective basis and classified all deferred tax assets and liabilities as non-current. Prior period deferred tax assets and liabilities were not retrospectively adjusted.

A net current deferred tax asset of $27.9 million was included in other current assets at December 31, 2015. During the first quarter of 2016, net current deferred tax assets of $27.9 million were reclassified to net long-term liabilities. Total net current deferred tax assets are primarily attributable to stock-based compensation and accrued expenses.

Net long-term deferred tax liabilities were $7.4 billion at June 30, 2016 and December 31, 2015. Net deferred tax liabilities are principally the result of purchase accounting for intangible assets in our various mergers, including CBOT Holdings, Inc. and NYMEX Holdings, Inc.

Valuation allowances of $49.4 million and $122.3 million have been provided on deferred tax assets at June 30, 2016 and December 31, 2015, respectively. At June 30, 2016 and December 31, 2015, valuation allowances were related to certain domestic net operating losses, foreign net operating losses as well as built in capital losses for which we do not believe that we currently meet the more-likely-than-not-threshold for recognition.

7. Contingencies

Legal and Regulatory Matters. In 2013, the CFTC filed suit against NYMEX and two former employees alleging disclosure of confidential customer information in violation of the Commodity Exchange Act. NYMEX’s motion to dismiss was denied in 2014. Based on its investigation to date and advice from legal counsel, the company believes that it has strong factual and legal defenses to the claim.

In the normal course of business, the company discusses matters with its regulators raised during regulatory examinations or otherwise subject to their inquiry and oversight. These matters could result in censures, fines, penalties or other sanctions. Management believes the outcome of any resulting actions will not have a material impact on its consolidated financial position or results of operations. However, the company is unable to predict the outcome or the timing of the ultimate resolution of these matters, or the potential fines, penalties or injunctive or other equitable relief, if any, that may result from these matters.

In addition, the company is a defendant in, and has potential for, various other legal proceedings arising from its regular business activities. While the ultimate results of such proceedings against the company cannot be predicted with certainty, the company believes that the resolution of any of these matters on an individual or aggregate basis will not have a material impact on its consolidated financial position or results of operations.

At December 31, 2015, the company had accrued $3.5 million for legal and regulatory matters that were probable and estimable. No accrual was required for legal and regulatory matters that were probable and estimable as of June 30, 2016.

Intellectual Property Indemnifications. Certain agreements with customers and other third parties related to accessing the CME platforms, utilizing market data services and licensing CME SPAN software may contain indemnifications from intellectual property claims that may be made against them as a result of their use of the applicable products and/or services. The potential future claims relating to these indemnifications cannot be estimated and therefore no liability has been recorded.

8. Guarantees

Mutual Offset Agreement. CME and Singapore Exchange Limited (SGX) have a mutual offset agreement with a current term through October 2016. This agreement enables market participants to open a futures position on one exchange and liquidate it on the other. The term of the agreement will automatically renew for a one-year period unless either party provides advance notice of their intent to terminate. CME must maintain U.S. Treasury securities or irrevocable, standby letters of credit as collateral for this agreement. At June 30, 2016, CME was contingently liable to SGX on letters of credit totaling $760.0 million. Regardless of the collateral, CME guarantees all cleared transactions submitted through SGX and would initiate procedures designed to satisfy these financial obligations in the event of a default, such as the use of performance bonds and guaranty fund contributions of the defaulting clearing firm. The company believes that its guarantee liability is immaterial and therefore has not recorded any liability at June 30, 2016.

Family Farmer and Rancher Protection Fund. In 2012, the company established the Family Farmer and Rancher Protection Fund (the Fund). The Fund is designed to provide payments, up to certain maximum levels, to family farmers, ranchers and other agricultural industry participants who use the company's agricultural commodity products and who suffer losses to their segregated account balances due to their CME clearing member becoming insolvent. Under the terms of the Fund, farmers and ranchers are eligible for up to $25,000 per participant. Farming and ranching cooperatives are eligible for up to $100,000 per cooperative. The Fund was established with a maximum of $100.0 million available for distribution to participants. Since its establishment, the Fund has made payments of approximately $2.0 million, which leaves $98.0 million available for future claims. If, at any time, payments due to participants were to exceed the amount remaining in the fund, payments would be pro-

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rated. Clearing members and customers must register with the company in advance and provide certain documentation in order to substantiate their eligibility. The company believes that its guarantee liability is immaterial and therefore has not recorded any liability at June 30, 2016.

9. Accumulated Other Comprehensive Income (Loss)

The following tables present changes in the accumulated balances for each component of other comprehensive income (loss), including current period other comprehensive income (loss) and reclassifications out of accumulated other comprehensive income (loss):

(in millions)	Investment Securities			Defined Benefit Plans			Derivative Investments			Foreign Currency Translation			Total
Balance at December 31, 2015	$	(95.0	)	$	(36.6	)	$	59.6		$	(8.8	)	$	(80.8	)
Other comprehensive income (loss) before reclassifications and income tax benefit (expense)	195.4			3.1			—			(5.0		)	193.5
Amounts reclassified from accumulated other comprehensive income (loss)	—			1.6			(0.6		)	—			1.0
Income tax benefit (expense)	(0.6		)	(1.8		)	0.2			1.8			(0.4		)
Net current period other comprehensive income (loss)	194.8			2.9			(0.4		)	(3.2		)	194.1
Balance at June 30, 2016	$	99.8		$	(33.7	)	$	59.2		$	(12.0	)	$	113.3

(in millions)	Investment Securities			Defined Benefit Plans			Derivative Investments			Foreign Currency Translation			Total
Balance at December 31, 2014	$	(22.9	)	$	(31.3	)	$	62.6		$	(2.2	)	$	6.2
Other comprehensive income (loss) before reclassifications and income tax benefit (expense)	9.2			(0.3		)	(4.7		)	(6.6		)	(2.4		)
Amounts reclassified from accumulated other comprehensive income (loss)	(6.0		)	1.4			1.2			—			(3.4		)
Income tax benefit (expense)	1.2			(0.4		)	1.4			2.5			4.7
Net current period other comprehensive income (loss)	4.4			0.7			(2.1		)	(4.1		)	(1.1		)
Balance at June 30, 2015	$	(18.5	)	$	(30.6	)	$	60.5		$	(6.3	)	$	5.1

10. Fair Value Measurements

The company uses a three-level classification hierarchy of fair value measurements for disclosure purposes.

• Level 1 inputs, which are considered the most reliable evidence of fair value, consist of quoted prices (unadjusted) for identical assets or liabilities in active markets.

• Level 2 inputs consist of observable market data, such as quoted prices for similar assets and liabilities in active markets, or inputs other than quoted prices that are directly observable.

• Level 3 inputs consist of unobservable inputs which are derived and cannot be corroborated by market data or other entity-specific inputs.

Level 1 assets generally include U.S. Treasury securities, U.S. government agency securities, investments in publicly traded mutual funds, equity securities and corporate debt securities with quoted market prices. In general, the company uses quoted prices in active markets for identical assets to determine the fair value of marketable securities and equity investments. If quoted prices are not available to determine fair value, the company uses other inputs that are directly observable.

Assets included in level 2 generally consist of asset-backed securities. Asset-backed securities were measured at fair value based on matrix pricing using prices of similar securities with similar inputs such as maturity dates, interest rates and credit ratings.

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Financial assets recorded in the consolidated balance sheet as of June 30, 2016 were classified in their entirety based on the lowest level of input that was significant to each asset's fair value measurement. There were no liabilities that were measured at fair value as of June 30, 2016. The following tables present financial instruments measured at fair value on a recurring basis:

	June 30, 2016
(in millions)	Level 1		Level 2		Level 3		Total
Assets at Fair Value:
Marketable securities:
Corporate debt securities	$	21.4	$	—	$	—	$	21.4
Mutual funds	58.0		—		—		58.0
Equity securities	0.1		—		—		0.1
Asset-backed securities	—		0.3		—		0.3
Total Marketable Securities	79.5		0.3		—		79.8
Performance bonds and guaranty fund contributions (1):
U.S. Treasury securities	6,952.3		—		—		6,952.3
U.S. government agencies securities	1,708.4		—		—		1,708.4
Equity investments	408.5		—		—		408.5
Total Assets at Fair Value	$	9,148.7	$	0.3	$	—	$	9,149.0

(1) Performance bonds and guaranty fund contributions on the consolidated balance sheet at June 30, 2016 include U.S. Treasury securities and U.S. government agency securities purchased with cash collateral.

There were no transfers of assets or liabilities between level 1, level 2 and level 3 during the first six months of 2016. There were no level 3 assets valued at fair value on a recurring basis during the first six months of 2016. The following is a reconciliation of level 3 liabilities valued at fair value on a recurring basis during the first six months of 2016.

(in millions)	Contingent Consideration
Fair value of liability at December 31, 2015	$	0.3
Realized and unrealized (gains) losses:
Included in other expenses	(0.3		)
Fair value of liability at June 30, 2016	$	—

In the first quarter of 2016, we sold a datacenter and leased back a portion of the property. Under generally accepted accounting principles, the transaction has been recognized under the financing method instead of recognized as a sale-leaseback arrangement. As a result, the property and equipment legally sold will continue to be recognized on the consolidated balance sheets and was written down to a fair value of $130.0 million at March 31, 2016. In the second quarter of 2016, we wrote down one of our strategic investments to a fair value of $1.7 million and recognized an impairment loss of $3.8 million. Both assessments were based on qualitative indications of impairment and a quantitative analysis of undiscounted cash flows. The fair values of the datacenter and strategic investment are considered level 3 and nonrecurring. There were no other level 3 assets or liabilities valued at fair value on a nonrecurring basis during the first six months of 2016.

The following presents the estimated fair values of long-term debt notes, which are carried at amortized cost on the consolidated balance sheets. The fair values, which are classified as level 2 under the fair value hierarchy, were estimated using quoted market prices. At June 30, 2016, the fair values were as follows:

(in millions)	Fair Value
$750.0 million fixed rate notes due September 2022, stated rate of 3.00%	$	796.2
$750.0 million fixed rate notes due March 2025, stated rate of 3.00%	789.7
$750.0 million fixed rates notes due September 2043, stated rate of 5.30%	961.5

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11. Earnings Per Share

Basic earnings per share is computed by dividing net income attributable to the company by the weighted average number of shares of all classes of CME Group common stock outstanding for each reporting period. Diluted earnings per share reflects the increase in shares using the treasury stock method to reflect the impact of an equivalent number of shares of common stock if stock options were exercised and restricted stock awards were converted into common stock. Anti-dilutive stock options, restricted stock and performance share awards were as follows for the periods presented:

	Quarter Ended June 30,		Six Months Ended June 30,
(in thousands)	2016	2015	2016	2015
Stock options	320	456	320	456
Restricted stock and performance shares	—	8	—	11
Total	320	464	320	467

The following table presents the earnings per share calculation for the periods presented:

	Quarter Ended June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
Net Income (in millions)	$	320.1	$	265.0	$	687.9	$	595.4
Weighted Average Number of Common Shares (in thousands):
Basic	337,289		336,036		337,152		335,859
Effect of stock options, restricted stock and performance shares	1,417		1,760		1,447		1,715
Diluted	338,706		337,796		338,599		337,574
Earnings per Common Share:
Basic	$	0.95	$	0.79	$	2.04	$	1.77
Diluted	0.95		0.78		2.03		1.76

12. Subsequent Events

The company has evaluated subsequent events through the date the financial statements were issued and has determined that there are no subsequent events that require disclosure.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion is provided as a supplement to, and should be read in conjunction with the accompanying unaudited consolidated financial statements and notes in this Quarterly Report on Form 10-Q and our Annual Report on Form 10-K for the year ended December 31, 2015.

References in this discussion and analysis to “we,” “us” and “our” are to CME Group Inc. (CME Group) and its consolidated subsidiaries, collectively. References to “exchange” are to Chicago Mercantile Exchange Inc. (CME), Board of Trade of the City of Chicago, Inc. (CBOT), New York Mercantile Exchange, Inc. (NYMEX), Commodity Exchange, Inc. (COMEX), CME Clearing Europe Limited (CMECE) and CME Europe Limited (CME Europe), collectively, unless otherwise noted. The clearing houses include CME Clearing, which is the U.S. clearing house and a division of CME, and CMECE.

RESULTS OF OPERATIONS

Financial Highlights

The following summarizes significant changes in our financial performance for the periods presented.

	Quarter Ended June 30,								Six Months Ended June 30,
(dollars in millions, except per share data)	2016			2015			Change		2016			2015			Change
Total revenues	$	906.4		$	820.0		11	%	$	1,840.6		$	1,662.7		11	%
Total expenses	343.1			324.9			6		703.4			660.3			7
Operating margin	62.1		%	60.4		%			61.8		%	60.3		%
Non-operating income (expense)	$	2.8		$	(47.0	)	n.m.		$	7.4		$	(30.5	)	n.m.
Effective tax rate	43.5		%	40.9		%			39.9		%	38.7		%
Net income	$	320.1		$	265.0		21		$	687.9		$	595.4		16
Diluted earnings per common share	0.95			0.78			22		2.03			1.76			15
Cash flows from operating activities									743.2			677.7			10

n.m. not meaningful

Revenues

	Quarter Ended June 30,						Six Months Ended June 30,
(dollars in millions)	2016		2015		Change		2016		2015		Change
Clearing and transaction fees	$	767.6	$	681.8	13	%	$	1,563.7	$	1,390.0	12	%
Market data and information services	102.9		102.8		—		205.3		200.8		2
Access and communication fees	22.3		21.5		4		43.9		42.8		3
Other	13.6		13.9		(1	)	27.7		29.1		(5	)
Total Revenues	$	906.4	$	820.0	11		$	1,840.6	$	1,662.7	11

Clearing and Transaction Fees

Futures and Options Contracts

The following table summarizes our total contract volume, revenue and average rate per contract for futures and options. Total contract volume includes contracts that are traded on our exchange and cleared through our clearing houses and certain cleared-only contracts. Volume is measured in round turns, which is considered a completed transaction that involves a purchase and an offsetting sale of a contract. Average rate per contract is determined by dividing total clearing and transaction fees by total contract volume. Contract volume and average rate per contract disclosures exclude interest rate swaps and credit default swaps. The interest rate swaps and credit default swaps are discussed in a later section.

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	Quarter Ended June 30,						Six Months Ended June 30,
	2016		2015		Change		2016		2015		Change
Total contract volume (in millions)	965.2		854.2		13	%	1,998.8		1,768.5		13	%
Clearing and transaction fees (in millions)	$	754.6	$	663.7	14		$	1,535.7	$	1,352.2	14
Average rate per contract	$	0.782	$	0.777	1		$	0.768	$	0.765	—

We estimate the following increases in clearing and transaction fees based on changes in total contract volumes and changes in average rate per contract for futures and options during the second quarter and first six months of 2016 when compared with the same periods in 2015.

(in millions)	Quarter Ended		Six Months Ended
Increases due to changes in total contract volume	$	86.9	$	176.9
Increases due to changes in average rate per contract	4.0		6.6
Increases in clearing and transaction fees	$	90.9	$	183.5

Average rate per contract is impacted by our rate structure, including volume-based incentives; product mix; trading venue, and the percentage of volume executed by customers who are members compared with non-member customers. Due to the relationship between average rate per contract and contract volume, the change in clearing and transaction fees attributable to changes in each is only an approximation.

Contract Volume

The following table summarizes average daily contract volume. Contract volume can be influenced by many factors, including political and economic conditions, the regulatory environment and market competition. 

	Quarter Ended June 30,						Six Months Ended June 30,
(amounts in thousands)	2016		2015		Change		2016		2015		Change
Average Daily Volume by Product Line:
Interest rate	6,776		6,599		3	%	7,493		7,070		6	%
Equity	2,957		2,364		25		3,250		2,563		27
Foreign exchange	838		903		(7	)	890		928		(4	)
Agricultural commodity	1,722		1,401		23		1,470		1,297		13
Energy	2,322		1,749		33		2,426		1,941		25
Metal	467		331		41		461		349		32
Aggregate average daily volume	15,082		13,347		13		15,990		14,148		13
Average Daily Volume by Venue:
Electronic	13,355		11,705		14		14,018		12,353		13
Open outcry	1,076		1,108		(3	)	1,245		1,197		4
Privately negotiated	651		534		22		727		598		22
Aggregate average daily volume	15,082		13,347		13		15,990		14,148		13
Electronic Volume as a Percentage of Total Volume	89	%	88	%			88	%	87	%

Overall futures and options contract volumes increased in the second quarter and first six months of 2016 when compared with the same periods in 2015 largely due to increases in equity, energy, agricultural commodity and interest rate contract volumes. We believe global market concerns and considerable uncertainty regarding the Federal Reserve's interest rate policy have resulted in increased volatility in the equity and interest rate markets, leading to increases in volumes. These markets also experienced higher volatility towards the end of the second quarter of 2016 due to anticipation of the United Kingdom European Union membership referendum. Additionally, the deceleration of the Chinese economy beginning in the second half of 2015 resulted in higher volatility within the equity markets.

The increases in crude oil volumes are a reflection of crude oil markets continuing to show considerable uncertainty regarding the direction of future oil prices. The oversupply of crude oil that began in 2014 continues to weigh on oil prices, resulting in additional volatility and an increase in overall energy contract volume.

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Volatility within the agricultural commodities markets increased during the second quarter of 2016 due to uncertainty regarding the 2016 growing season because of weather events. The increase in volatility contributed to increases in agricultural commodity volumes.

Interest Rate Products

The following table summarizes average daily contract volume for our key interest rate products. Eurodollar Front 8 futures include contracts expiring in two years or less. Eurodollar Back 32 futures include contracts with expirations after two years through ten years.

	Quarter Ended June 30,				Six Months Ended June 30,
(amounts in thousands)	2016	2015	Change		2016	2015	Change
Eurodollar futures and options:
Front 8 futures	1,630	1,471	11	%	1,828	1,689	8	%
Back 32 futures	594	719	(17	)	660	795	(17	)
Options	1,043	814	28		1,276	909	40
U.S. Treasury futures and options:
10-Year	1,616	1,781	(9	)	1,727	1,780	(3	)
5-Year	842	814	3		889	855	4
Treasury bond	318	351	(9	)	351	385	(9	)
2-Year	312	348	(10	)	328	364	(10	)

Overall interest rate contract volumes increased in the second quarter and first six months of 2016 when compared with the same periods in 2015 largely due to the uncertainty around the Federal Reserve's interest rate policy. As a result, contract volumes increased for short-term interest rate contracts, including the Eurodollar Front 8 futures and Eurodollar options. Back 32 Eurodollar futures volumes declined as participants became more focused on short-term interest rate uncertainty. In addition, electronic Eurodollar options volumes increased in the second quarter and first six months of 2016 due to our continued investment in system enhancements and client education.

Equity Products

The following table summarizes average daily contract volume for our key equity products.

	Quarter Ended June 30,				Six Months Ended June 30,
(amounts in thousands)	2016	2015	Change		2016	2015	Change
E-mini S&P 500 futures and options	2,360	1,857	27	%	2,566	2,011	28	%
E-mini NASDAQ 100 futures and options	258	224	15		305	253	20

Overall equity contract volumes increased in the second quarter and first six months of 2016 when compared with the same periods in 2015 due to overall higher market volatility, as measured by the CBOE Volatility Index. We believe overall volatility resulted from continued uncertainty surrounding the Federal Reserve's interest rate policy, the uncertainty surrounding the United Kingdom European Union membership referendum, the deceleration of the Chinese economy as well as declining global crude oil prices.

Foreign Exchange Products

The following table summarizes average daily contract volume for our key foreign exchange products.

	Quarter Ended June 30,				Six Months Ended June 30,
(amounts in thousands)	2016	2015	Change		2016	2015	Change
Euro	219	342	(36	)%	246	339	(27	)%
Japanese yen	147	145	2		169	158	7
British pound	134	114	18		126	117	8
Australian dollar	112	98	14		113	103	9
Canadian dollar	78	70	12		85	75	13

Foreign exchange contract volumes decreased slightly in the second quarter and first six months of 2016 when compared with the same periods in 2015. Euro contract volumes decreased due to overall low volatility in early 2016, which we believe resulted from a lack of global macroeconomic drivers affecting the Euro. Euro contract volumes were high in the first half of

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2015 due to volatility caused by quantitative easing programs initiated by central banks throughout Europe in early 2015. The overall decrease in overall foreign exchange contract volume in the second quarter of 2016 when compared with the same period in 2015 was partially offset by an increase in British pound contract volume, which we believe was caused by volatility resulting from uncertainty surrounding the United Kingdom European Union membership referendum.

Agricultural Commodity Products

The following table summarizes average daily contract volume for our key agricultural commodity products.

	Quarter Ended June 30,				Six Months Ended June 30,
(amounts in thousands)	2016	2015	Change		2016	2015	Change
Corn	587	473	24	%	492	430	14	%
Soybean	454	305	49		374	291	28
Wheat	232	226	3		208	199	4

Agricultural commodity contract volumes increased in the second quarter and first six months of 2016 when compared with the same periods in 2015 due to higher price volatility, which we believe was caused by greater uncertainty related to weather conditions and crop production for the 2016 growing season.

Energy Products

The following table summarizes average daily contract volume for our key energy products.

	Quarter Ended June 30,				Six Months Ended June 30,
(amounts in thousands)	2016	2015	Change		2016	2015	Change
WTI crude oil	1,231	872	41	%	1,312	999	31	%
Natural gas	531	454	17		527	469	12
Refined products	369	312	18		371	328	13
Brent crude oil	92	86	7		104	112	(7	)

Overall energy contract volumes increased in the second quarter and first six months of 2016 when compared with the same periods in 2015 largely due to increases in crude oil trading, which we believe resulted from a continuing shift in supply that began in the fourth quarter of 2014. In the first half of 2016, the overall market shifted more focus on WTI crude oil instead of Brent crude oil because of the marketplaces' increased weighting of WTI pricing as a global benchmark price for crude oil. Additionally, refined products and natural gas contract volumes increased largely due to higher price volatility in the underlying markets.

Metal Products

The following table summarizes average daily volume for our key metal products.

	Quarter Ended June 30,				Six Months Ended June 30,
(amounts in thousands)	2016	2015	Change		2016	2015	Change
Gold	273	179	52	%	278	200	39	%
Copper	89	67	33		83	68	22
Silver	84	65	29		77	61	26

We believe the increases in metals contract volumes in the second quarter and first six months of 2016 when compared with the same periods in 2015 were due to investors turning to gold and other precious metals as a safe haven investment alternative to the volatile equity markets.

Average Rate per Contract

The average rate per contract remained relatively flat in the second quarter and first six months of 2016 when compared with the same periods in 2015. The impact from a rate increase in early 2016 was offset by higher volume-based incentives and discounts on our contracts as well as an increase in trades executed by members, as a percentage of total trading volume.

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Cleared-only Swap Contracts

Clearing and transaction fees as presented on the consolidated statements of income include revenues for our cleared-only interest rate swap and credit default swap contracts. In the second quarter of 2016 and 2015, clearing and transaction fees generated from these contracts were $12.9 million and $18.0 million, respectively. In the first six months of 2016 and 2015, clearing and transaction fees generated from these contracts were $28.0 million and $37.5 million, respectively. The decreases in revenues were largely attributable to a reduction in client activity after the first quarter of 2015, as we believe some customers chose alternative products and venues to manage risk.

Concentration of Revenue

We bill a substantial portion of our clearing and transaction fees directly to our clearing firms. The majority of clearing and transaction fees received from clearing firms represent charges for trades executed and cleared on behalf of their customers. One firm represented 13% and one firm represented 10% of our clearing and transaction fees in the first six months of 2016. Should a clearing firm withdraw, we believe that the customer portion of the firm’s trading activity would likely transfer to another clearing firm of the exchange. Therefore, we do not believe we are exposed to significant risk from the ongoing loss of revenue received from or through a particular clearing firm.

Other Sources of Revenue

Beginning in 2016, the partial fee waivers that existed in 2015 ended, which contributed to an increase in market data and information services revenue in the first six months of 2016 when compared with the same period in 2015. The increase was partially offset by some rationalization as customer firms transitioned into full-priced offerings, as well as reductions in overall screen counts at member banks.

The two largest resellers of our market data represented approximately 40% of our market data and information services revenue in the first six months of 2016. Despite this concentration, we consider exposure to significant risk of revenue loss to be minimal. In the event that one of these vendors no longer subscribes to our market data, we believe the majority of that vendor’s customers would likely subscribe to our market data through another reseller. Additionally, several of our largest institutional customers that utilize services from our two largest resellers report usage and remit payment of their fees directly to us.

Expenses

	Quarter Ended June 30,						Six Months Ended June 30,
(dollars in millions)	2016		2015		Change		2016		2015		Change
Compensation and benefits	$	131.7	$	141.5	(7	)%	$	263.6	$	282.8	(7	)%
Communications	6.3		6.6		(4	)	13.0		14.2		(9	)
Technology support services	17.7		16.1		10		35.1		31.7		11
Professional fees and outside services	39.0		27.7		41		70.7		56.8		24
Amortization of purchased intangibles	24.0		25.0		(4	)	48.0		49.9		(4	)
Depreciation and amortization	30.4		33.3		(9	)	64.3		65.1		(1	)
Occupancy and building operations	24.4		23.5		4		45.7		46.3		(1	)
Licensing and other fee agreements	32.8		28.8		14		71.8		59.4		21
Other	36.8		22.4		64		91.2		54.1		69
Total Expenses	$	343.1	$	324.9	6		$	703.4	$	660.3	7

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Operating expenses increased by $18.2 million in the second quarter of 2016 when compared with the same period in 2015. Operating expenses increased by $43.1 million in the first six months of 2016 when compared with the same period in 2015. The following table shows the estimated impacts of key factors resulting in the changes in operating expenses:

	Quarter Ended, June 30, 2016					Six Months Ended, June 30, 2016
	Amount  of Change			Change as  a Percentage of Total Expenses		Amount  of Change			Change as  a Percentage of Total Expenses
(dollars in millions)
Loss on datacenter and related legal fees	$	—		—	%	$	28.6		4	%
Foreign currency exchange rate fluctuation	22.7			7		16.6			3
Professional fees and outside services	11.3			3		13.9			2
Licensing and other fee agreements	4.0			1		12.4			2
Stock-based compensation	(5.7		)	(1	)	(4.3		)	(1	)
Reorganization costs	—			—		(5.5		)	(1	)
Real estate taxes and fees	(10.0		)	(3	)	(10.0		)	(1	)
Other expenses, net	(4.1		)	(1	)	(8.6		)	(1	)
Total increase	$	18.2		6	%	$	43.1		7	%

Increases in overall operating expenses in the second quarter and first six months of 2016 when compared with the same periods in 2015 were as follows:

• In the first quarter of 2016, we sold and leased back our datacenter in the Chicago area. The transaction was recognized under the financing method under generally accepted accounting principles. We recognized total losses and expenses of $28.6 million, including a net loss on write-down to fair value of the assets and certain other transaction fees of $27.1 million within other expenses and $1.5 million of legal and other fees.

• In the second quarter of 2016, we recognized a net loss of $11.6 million due to an unfavorable change in exchange rates on foreign cash balances, compared with a net gain of $11.1 million in the second quarter of 2015. In the first six months of 2016, we recognized a net loss of $15.5 million due to an unfavorable change in exchange rates on foreign cash balances, compared with a net gain of $1.1 million in the first six months of 2015. Gains and losses from exchange rate fluctuations result when subsidiaries with a U.S. dollar functional currency hold cash as well as certain other monetary assets and liabilities denominated in foreign currencies. We expect to continue to incur gains and losses from exchange rate fluctuations as long as this is the case.

• Professional fees and outside services expenses increased largely due to an increase in legal efforts related to our business activities and product offerings as well as an increase in professional fees related to a greater reliance on consultants for security and systems enhancement work.

• Increases in licensing and other fee sharing agreements expenses resulted from higher expenses related to revenue sharing agreements for certain equity and energy contracts due to both higher volumes and increases in the license rates for certain equity and energy products.

The overall increases in operating expenses in the second quarter and first six months of 2016 were partially offset by the following decreases:

• In the second quarter of 2015, we recognized higher stock-based compensation expense due to additional performance awards issued as part of our stock-based compensation program, which resulted in decreases in compensation and benefits expenses in the second quarter and first six months of 2016 when compared with the same periods in 2015.

• Severance and other costs related to the reorganization announced in October 2014 and the reduction of our trading floors in mid-2015 were recognized in the first quarter of 2015, resulting in a decrease in compensation and benefits expense in the first six months of 2016 when compared with the same period in 2015.

• In the second quarter of 2015, we recognized additional real estate taxes and fees related to the transfer of the ownership of the NYMEX building.

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Non-Operating Income (Expense)

	Quarter Ended June 30,								Six Months Ended June 30,
(dollars in millions)	2016			2015			Change		2016			2015			Change
Investment income	$	17.2		$	18.5		(7	)%	$	34.8		$	24.2		44	%
Gains (losses) on derivative investments	—			—			—		—			(1.8		)	n.m.
Interest and other borrowing costs	(31.0		)	(28.6		)	8		(60.8		)	(60.2		)	1
Equity in net earnings (losses) of unconsolidated subsidiaries	27.0			26.0			4		53.8			48.5			11
Other non-operating income (expense)	(10.4		)	(62.9		)	(83	)	(20.4		)	(41.2		)	(50	)
Total Non-Operating	$	2.8		$	(47.0	)	n.m.		$	7.4		$	(30.5	)	n.m.

n.m. not meaningful

Investment income remained relatively flat in the second quarter of 2016 and increased in the first six months of 2016 when compared with the same periods in 2015. Investment income increased largely due to increases in the rate of interest earned from cash performance bond and guaranty fund contributions that are reinvested. The increases in investment income were offset by decreases in dividend income and gains (losses) on investments in the second quarter and first six months of 2016 when compared with the same periods in 2015. In the second quarter of 2016, we recognized a $3.8 million impairment loss on one of our strategic investments within investment income while in the second quarter of 2015, we recognized a $5.9 million gain on the sale of of 14.3 million shares of BM&FBOVESPA S.A. (BM&FBOVESPA).

The overall increase in interest and other borrowing costs in the second quarter of 2016 when compared with the same period in 2015 was due to an increase in commitment fees on line of credit agreements and additional interest expense related to our finance lease obligation related to one of our datacenters. In the first six months of 2016 when compared with the same period in 2015, the increase in interest and borrowing costs due to higher commitment fees and additional interest expense on our finance lease obligation was offset by a decrease in interest and borrowing costs on our outstanding borrowings as follows:

	Quarter Ended June 30,									Six Months Ended June 30,
	2016			2015			Change			2016			2015			Change
Weighted average borrowings outstanding (in millions)	$	2,250.0		$	2,304.4		$	(54.4	)	$	2,250.0		$	2,300.1		$	(50.1	)
Weighted average effective yield	3.71		%	3.73		%	(0.02		)%	3.71		%	3.90		%	(0.19		)%
Average cost of borrowings (1)	3.91			3.94			(0.03		)	3.91			4.13			(0.22		)

(1) Average cost of borrowings includes interest, the effective portion of interest rate hedges, discount accretion and debt issuance costs. Commitment fees on line of credit agreements are not included in the average cost of borrowings.

In March 2015, we issued $750.0 million 3.0% notes due March 2025. In April 2015, we repurchased the $612.5 million 4.40% notes due March 2018. These transactions decreased weighted average borrowings outstanding, weighted average effective yield and average cost of borrowings for the first six months of 2016 when compared with the same period in 2015.

Higher income generated from our S&P/Dow Jones Indices LLC business venture contributed to increases in equity in net earnings (losses) of unconsolidated subsidiaries in the second quarter and first six months of 2016 when compared with the same periods in 2015.

In April 2015, we repurchased the $612.5 million fixed rate notes due 2018 and paid a call premium of $60.5 million. As a result of the transaction, we recognized debt prepayment costs of $61.8 million in the second quarter of 2015, which included the call premium and was included in other non-operating income (expense). In the first quarter of 2015, we received a termination fee of $22.5 million, net of the portion paid to outside advisers, related to our proposed acquisition of GFI Group Inc. (GFI Group), which was classified as income within other non-operating income (expense). In the second quarter and first six months of 2016 when compared with the same periods in 2015, we recognized higher expenses related to the distribution of interest earned on performance bond collateral reinvestment to the clearing firms. This expense is included in other non-operating income (expense).

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Income Tax Provision

The following table summarizes the effective tax rates for the periods presented:

	2016		2015
Quarter ended June 30	43.5	%	40.9	%
Six months ended June 30	39.9	%	38.7	%

In the second quarter and first six months of 2016 when compared with the same periods in 2015, the effective tax rates were higher due to additional tax expense recognized from the remeasurement of tax positions resulting from a state and local income tax law change in the second quarter of 2016.

Liquidity and Capital Resources

Sources and Uses of Cash. Net cash provided by operating activities increased in the first six months of 2016 when compared with the same period of 2015. The increase in net cash provided by operating activities was largely attributable to higher clearing and transaction fees resulting from an increase in volume. Net cash used in investing activities increased in the first six months of 2016 when compared with the same period of 2015 due to proceeds received in the second quarter of 2015 from our sale of BM&FBOVESPA shares. Cash used in financing activities was higher in the first six months of 2016 when compared with the same period in 2015. The increase was attributable to higher cash dividends paid in the first six months of 2016 when compared with the same period in 2015. The increase was partially offset by proceeds from a finance lease obligation related to the sale-leaseback of the datacenter in the first quarter of 2016.

Debt Instruments. The following table summarizes our debt outstanding at June 30, 2016:

(in millions)	Par Value
Fixed rate notes due September 2022, stated rate of 3.00% (1)	$	750.0
Fixed rate notes due March 2025, stated rate of 3.00% (2)	750.0
Fixed rate notes due September 2043, stated rate of 5.30% (3)	750.0

(1) In August 2012, we entered into a forward-starting interest rate swap agreement that modified the interest obligation associated with these notes so that the interest payable effectively became fixed at a rate of 3.32%.

(2) In December 2014, we entered into a forward-starting interest rate swap agreement that modified the interest obligation associated with these notes so that the interest payable effectively became fixed at a rate of 3.11%

(3) In August 2012, we entered into a forward starting interest rate swap agreement that modified the interest obligation associated with these notes so that the interest payable effectively became fixed at a rate of 4.73%.

We maintain a $2.3 billion multi-currency revolving senior credit facility with various financial institutions, which matures in March 2020. The proceeds from this facility can be used for general corporate purposes, which includes providing liquidity for our clearing houses in certain circumstances at CME Group's discretion and, if necessary, for maturities of commercial paper. As long as we are not in default under this facility, we have the option to increase it up to $3.0 billion with the consent of the agent and lenders providing the additional funds. This facility is voluntarily pre-payable from time to time without premium or penalty. Under this facility, we are required to remain in compliance with a consolidated net worth test, which is defined as our consolidated shareholders' equity at December 31, 2014, giving effect to share repurchases made and special dividends paid during the term of the agreements (and in no event greater than $2.0 billion in aggregate), multiplied by 0.65. We currently do not have any borrowings outstanding under this facility.

In March 2016, we sold our datacenter in the Chicago area for $130.0 million. At the time of the sale, we leased back a portion of the property. Under generally accepted accounting principles, the transaction has been accounted for under the financing method instead of a sale-leaseback arrangement because our participation in future revenues and development work constitute continuing involvement in the datacenter. Under the financing method, the assets remain on the consolidated balance sheet throughout the term of the lease and the proceeds of $130.0 million from the transaction are recognized as a finance lease obligation within other liabilities and other current liabilities in the consolidated balance sheet. A portion of the lease payments will be recognized as a reduction of the finance lease obligation and a portion will be recognized as interest expense based on an imputed interest rate.

We maintain a 364-day multi-currency revolving secured credit facility with a consortium of domestic and international banks to be used in certain situations by CME Clearing. The facility provides for borrowings of up to $7.0 billion. We may use the proceeds to provide temporary liquidity in the unlikely event of a clearing firm default, in the event of a liquidity constraint or default by a depositary (custodian for our collateral), or in the event of a temporary disruption with the domestic payments

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system that would delay payment of settlement variation between us and our clearing firms. CME clearing firm guaranty fund contributions received in the form of cash or U.S. Treasury securities as well as the performance bond assets of a defaulting firm can be used to collateralize the facility. At June 30, 2016, guaranty funds available to collateralize the facility totaled $6.8 billion. We have the option to request an increase in the line from $7.0 billion to $10.0 billion. Our 364-day facility contains a requirement that CME remain in compliance with a consolidated tangible net worth test, defined as CME consolidated shareholder's equity less intangible assets (as defined in the agreement), of not less than $800.0 million. We currently do not have any borrowings outstanding under this facility.

The indentures governing our fixed rate notes, our $2.3 billion multi-currency revolving senior credit facility and our 364-day multi-currency revolving secured credit facility for $7.0 billion do not contain specific covenants that restrict the ability to pay dividends. These documents, however, do contain other customary financial and operating covenants that place restrictions on the operations of the company that could indirectly affect the ability to pay dividends.

At June 30, 2016, we have excess borrowing capacity for general corporate purposes of approximately $2.3 billion under our multi-currency revolving senior credit facility.

At June 30, 2016, we were in compliance with the various covenant requirements of all our debt facilities.

CME Group, as a holding company, has no operations of its own. Instead, it relies on dividends declared and paid to it by its subsidiaries in order to provide the funds which it uses to pay dividends to its shareholders.

To satisfy our performance bond obligation with Singapore Exchange Limited, we may pledge CME-owned U.S. Treasury securities in lieu of, or in combination with, irrevocable standby letters of credit. At June 30, 2016, the letters of credit totaled $760.0 million.

The following table summarizes our credit ratings at June 30, 2016:

	Short-Term	Long-Term
Rating Agency	Debt Rating	Debt Rating	Outlook
Standard & Poor’s	A1+	AA-	Stable
Moody’s Investors Service	P1	Aa3	Stable

Given our cash flow generation, our ability to pay down debt levels and our ability to refinance existing debt facilities if necessary, we expect to maintain an investment grade rating. If our ratings are downgraded below investment grade due to a change of control, we are required to make an offer to repurchase our fixed rate notes at a price equal to 101% of the principal amount, plus accrued and unpaid interest.

Liquidity and Cash Management. Cash and cash equivalents totaled $1.2 billion and $1.7 billion at June 30, 2016 and December 31, 2015, respectively. The balance retained in cash and cash equivalents is a function of anticipated or possible short-term cash needs, prevailing interest rates, our investment policy and alternative investment choices. A majority of our cash and cash equivalents balance is invested in money market mutual funds that invest only in U.S. Treasury securities, U.S. government agency securities and U.S. Treasury security reverse repurchase agreements. Our exposure to credit and liquidity risk is minimal given the nature of the investments. Cash that is not available for general corporate purposes because of regulatory requirements or other restrictions is classified as restricted cash and is included in other current assets or other assets in the consolidated balance sheets.

On August 3, 2016, CME Group’s board of directors declared a regular quarterly dividend of $0.60 per share payable on September 26, 2016 to the shareholders of record as of September 9, 2016.

Regulatory Requirements. CME is regulated by the U.S. Commodity Futures Trading Commission (CFTC) as a U.S. Derivatives Clearing Organization (DCO). DCOs are required to maintain capital, as defined by the CFTC, in an amount at least equal to one year of projected operating expenses as well as cash, liquid securities, or a line of credit at least equal to six months of projected operating expenses. CME was designated by the Financial Stability Oversight Council as a systemically important DCO under Title VIII of the Dodd-Frank Wall Street Reform and Consumer Protection Act. As a result, CME must comply with the requirements for financial resources and liquidity resources. CME is in compliance with all DCO financial requirements.

CME, CBOT, NYMEX and COMEX are regulated by the CFTC as Designated Contract Markets (DCM). DCMs are required to maintain capital, as defined by the CFTC, in an amount at least equal to one year of projected operating expenses as well as cash, liquid securities or a line of credit at least equal to six months of projected operating expenses. Our DCMs are in compliance with all DCM financial requirements.

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Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (FASB) issued a new standard on revenue recognition that replaces numerous, industry-specific requirements and converges U.S. accounting with International Financial Reporting Standards. The new standard introduces a framework for recognizing revenue that focuses on the transfer of control rather than risks and rewards. The new standard also requires significant additional disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments, changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. The new standard was intended to become effective in the first annual period beginning after December 15, 2016, but in August 2015, FASB extended the deadline by one year. This guidance may be adopted using one of two transition methods, which we are still evaluating along with the impact of the new standard on our consolidated financial statements.

In January 2016, the FASB issued a standards update that will change how entities measure certain equity investments. It does not change the guidance for classifying and measuring investments in debt securities and loans. Under the new guidance, entities will have to measure many equity investments at fair value and recognize any changes in fair value in net income, unless the investments qualify for a practicability exception. Entities will no longer be able to recognize unrealized holding gains and losses on equity securities classified today as available for sale in other comprehensive income. The update is effective for reporting periods beginning after December 15, 2017. Early adoption is permitted. We are in the process of evaluating the impact of this update on our consolidated financial statements.

In February 2016, the FASB issued a standards update that requires lessees to recognize on the balance sheet the assets and liabilities associated with the rights and obligations created by those leases. The guidance for lessors is largely unchanged from current U.S. GAAP. Under the new guidance, a lessee will be required to recognize assets and liabilities for leases with lease terms of more than 12 months. Consistent with current U.S. GAAP, the recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification as a finance or operating lease. The update is effective for reporting periods beginning after December 15, 2018. Early adoption is permitted. We are in the process of evaluating the impact of this update on our consolidated financial statements.

In March 2016, the FASB issued a standards update that will change certain aspects of accounting for share-based payments to employees. The guidance will require that all income tax effects of awards to be recognized in the income statement when the awards vest or are settled. It will also allow an employer to repurchase more of an employee’s shares for tax withholding purposes without triggering liability accounting and to make a policy election to account for forfeitures as they occur. The update is effective for reporting periods beginning after December 15, 2016. Early adoption is permitted. If this guidance is early adopted during an interim period, any adjustments must be reflected as of the beginning of the fiscal year that includes the interim period. We are in the process of evaluating the impact of this update on our consolidated financial statements.

In June 2016, the FASB issued guidance that changes how credit losses are measured for most financial assets measured at amortized cost and certain other instruments. The standard requires an entity to estimate its lifetime expected credit loss and record an allowance, that when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. This forward-looking expected loss model generally will result in the earlier recognition of allowances for losses. The standard also amends the impairment model for available for sale debt securities and requires entities to determine whether all or a portion of the unrealized loss on an available for sale debt security is a credit loss. Severity and duration of the unrealized loss are no longer permissible factors in concluding whether a credit loss exists. Entities will recognize improvements to estimated credit losses on available for sale debt securities immediately in earnings rather than as interest income over time. The standard is effective for reporting periods beginning after December 15, 2019. The standard’s provisions must be applied as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. Early adoption is permitted for reporting periods beginning in 2019. We are in the process of evaluating the impact of this standard on our consolidated financial statements.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We are subject to various market risks, including those caused by changes in interest rates, credit, foreign currency exchange rates and equity prices. There have not been material changes in our exposure to market risk since December 31, 2015. Refer to Item 7A. of CME Group’s Annual Report on Form 10-K for the year ended December 31, 2015 for additional information.

ITEM 4. CONTROLS AND PROCEDURES

(a) Disclosure Controls and Procedures. Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the Exchange Act)) as of the end of the

27

period covered by this report. Based on such evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that, as of the end of such period, our disclosure controls and procedures are effective.

(b) Changes in Internal Control Over Financial Reporting. As required by Rule 13a-15(d) under the Exchange Act, the company’s management, including the company’s Chief Executive Officer and Chief Financial Officer, have evaluated the company’s internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) to determine whether any changes occurred during the quarter covered by this quarterly report that have materially affected, or are reasonably likely to materially affect, the company’s internal control over financial reporting. There were no changes in the company’s internal control over financial reporting during the period covered by this quarterly report that have materially affected, or are reasonably likely to materially affect, internal control over financial reporting.

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

See “Legal and Regulatory Matters” in Note 7. Contingencies to the Consolidated Financial Statements for updates to CME Group’s existing legal proceedings disclosure which is incorporated herein by reference. Note 7. Contingencies includes updates to the legal proceedings disclosed in the company’s Annual Report on Form 10-K, filed with the SEC on February 26, 2016.

ITEM 1A. RISK FACTORS

There have been no material updates to the Risk Factors disclosure included in the company’s Annual Report on Form 10-K, filed with the SEC on February 26, 2016. In addition to the other information contained in this Quarterly Report on Form 10-Q, you should carefully consider the factors discussed in our Annual Report on Form 10-K, which are the risks that we believe are material at this time. These risks could materially and adversely affect our business, financial condition and results of operations. These risks and uncertainties are not the only ones facing us. Additional risks and uncertainties not presently known to us or that we currently believe to be immaterial may also adversely affect our business in the future.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

(c) Issuer Purchases of Equity Securities

Period	(a) Total Number of Class A Shares Purchased (1)	(b) Average Price Paid Per Share		(c) Total Number of Class A Shares Purchased as Part of Publicly Announced Plans or Programs	(d) Maximum Number (or Approximate Value) that May Yet Be Purchased Under the Plans or Programs (in millions)
April 1 to April 30	170	$	96.95	—	$	—
May 1 to May 31	489	93.62		—	—
June 1 to June 30	1,412	94.50		—	—
Total	2,071	$	94.49	—

(1) Shares purchased consist of an aggregate of 2,071 shares of Class A common stock surrendered in the second quarter of 2016 to satisfy employees’ tax obligations upon the vesting of restricted stock.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

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ITEM 6. EXHIBITS

31.1	Section 302 Certification—Phupinder S. Gill
31.2	Section 302 Certification—John W. Pietrowicz
32.1	Section 906 Certification
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	CME Group Inc. (Registrant)
Dated: August 4, 2016	By:	/s/ John W. Pietrowicz
		Chief Financial Officer & Senior Managing Director Finance

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EX-31.1

Exhibit 31.1

CERTIFICATION

I, Phupinder S. Gill, certify that:

1. I have reviewed this report on Form 10-Q of CME Group Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent function):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: August 4, 2016	/s/ Phupinder S. Gill
	Name: Phupinder S. Gill
	Title: Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, John W. Pietrowicz, certify that:

1. I have reviewed this report on Form 10-Q of CME Group Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent function):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: August 4, 2016	/s/ John W. Pietrowicz
	Name: John W. Pietrowicz
	Title: Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification of CEO and CFO Pursuant to

18 U.S.C. Section 1350,

as Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report on Form 10-Q of CME Group Inc. (the “Company”) for the quarter ended June 30, 2016 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Phupinder S. Gill, as Chief Executive Officer of the Company, and John W. Pietrowicz, as Chief Financial Officer of the Company, each hereby certifies, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Phupinder S. Gill

Name: Phupinder S. Gill

Title: Chief Executive Officer

Dated: August 4, 2016

/s/ John W. Pietrowicz

Name: John W. Pietrowicz

Title: Chief Financial Officer

Dated: August 4, 2016

This certification accompanies the Report pursuant to § 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of §18 of the Securities Exchange Act of 1934, as amended.

A signed original of this written statement required by § 906 of the Sarbanes-Oxley Act of 2002 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

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Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2016	Jul. 13, 2016
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2016
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2016
Entity Registrant Name	CME GROUP INC.
Entity Central Index Key	0001156375
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Class A Common Stock [Member]
Entity Common Stock, Shares Outstanding		338,851,977
Class B Common Stock, Class B-1 [Member]
Entity Common Stock, Shares Outstanding		625
Class B Common Stock, Class B-2 [Member]
Entity Common Stock, Shares Outstanding		813
Class B Common Stock, Class B-3 [Member]
Entity Common Stock, Shares Outstanding		1,287
Class B Common Stock, Class B-4 [Member]
Entity Common Stock, Shares Outstanding		413

XML

Consolidated Balance Sheets - USD ($) $ in Millions		Jun. 30, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents		$ 1,161.1	$ 1,692.6
Marketable securities		79.8	72.5
Accounts receivable, net of allowance of $3.7 and $1.9		427.0	357.8
Other current assets (includes $30.0 and $32.0 in restricted cash)		220.7	228.6
Performance bonds and guaranty fund contributions		36,138.6	35,553.0
Total current assets		38,027.2	37,904.5
Property, net of accumulated depreciation and amortization of $655.3 and $788.6		437.9	491.7
Intangible assets—trading products	[1]	17,175.3	17,175.3
Intangible assets—other, net		2,489.9	2,537.9
Goodwill		7,569.0	7,569.0
Other assets (includes $65.7 and $70.5 in restricted cash)		1,926.3	1,681.0
Total Assets		67,625.6	67,359.4
Liabilities and Equity
Accounts payable		35.6	28.7
Other current liabilities		246.8	1,242.8
Performance bonds and guaranty fund contributions		36,137.4	35,553.0
Total current liabilities		36,419.8	36,824.5
Long-term debt		2,230.2	2,229.3
Deferred income tax liabilities, net		7,352.7	7,358.3
Other liabilities		549.0	395.5
Total Liabilities		46,551.7	46,807.6
Shareholders' Equity:
Preferred stock, $0.01 par value, 10,000 shares authorized at June 30, 2016 and December 31, 2015; none issued		0.0	0.0
Additional paid-in capital		17,767.9	17,721.6
Retained earnings		3,189.3	2,907.6
Accumulated other comprehensive income (loss)		113.3	(80.8)
Total shareholders’ equity		21,073.9	20,551.8
Total Liabilities and Equity		67,625.6	67,359.4
Class A Common Stock [Member]
Shareholders' Equity:
Common stock		3.4	3.4
Class B Common Stock [Member]
Shareholders' Equity:
Common stock		$ 0.0	$ 0.0

[1] )Trading products represent futures and options products acquired in our business combinations with CBOT Holdings, Inc., NYMEX Holdings, Inc. and The Board of Trade of Kansas City, Missouri, Inc. Clearing and transaction fees are generated through the trading of these products. These trading products, most of which have traded for decades, require authorization from the Commodity Futures Trading Commission (CFTC). Product authorizations from the CFTC have no term limits

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Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Accounts receivable, allowance	$ 3.7	$ 1.9
Restricted cash, current	30.0	32.0
Accumulated depreciation and amortization, property	655.3	788.6
Restricted cash, noncurrent	$ 65.7	$ 70.5
Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000	10,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Series A Junior Participating Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	0	0
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Class A Common Stock [Member]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000	1,000,000
Common stock, shares issued (in shares)	337,448	336,938
Common stock, shares outstanding (in shares)	337,448	336,938
Class B Common Stock [Member]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	3	3
Common stock, shares issued (in shares)	3	3
Common stock, shares outstanding (in shares)	3	3

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Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues
Clearing and transaction fees	$ 767.6	$ 681.8	$ 1,563.7	$ 1,390.0
Market data and information services	102.9	102.8	205.3	200.8
Access and communication fees	22.3	21.5	43.9	42.8
Other	13.6	13.9	27.7	29.1
Expenses	906.4	820.0	1,840.6	1,662.7
Expenses
Compensation and benefits	131.7	141.5	263.6	282.8
Communications	6.3	6.6	13.0	14.2
Technology support services	17.7	16.1	35.1	31.7
Professional fees and outside services	39.0	27.7	70.7	56.8
Amortization of purchased intangibles	24.0	25.0	48.0	49.9
Depreciation and amortization	30.4	33.3	64.3	65.1
Occupancy and building operations	24.4	23.5	45.7	46.3
Licensing and other fee agreements	32.8	28.8	71.8	59.4
Other	36.8	22.4	91.2	54.1
Total Expenses	343.1	324.9	703.4	660.3
Operating Income	563.3	495.1	1,137.2	1,002.4
Non-Operating Income (Expense)
Investment income	17.2	18.5	34.8	24.2
Gains (losses) on derivative investments	0.0	0.0	0.0	(1.8)
Interest and other borrowing costs	(31.0)	(28.6)	(60.8)	(60.2)
Equity in net earnings (losses) of unconsolidated subsidiaries	27.0	26.0	53.8	48.5
Other non-operating income (expense)	(10.4)	(62.9)	(20.4)	(41.2)
Total Non-Operating	2.8	(47.0)	7.4	(30.5)
Income before Income Taxes	566.1	448.1	1,144.6	971.9
Income tax provision	246.0	183.1	456.7	376.5
Net Income	$ 320.1	$ 265.0	$ 687.9	$ 595.4
Earnings per Common Share:
Basic (in dollars per share)	$ 0.95	$ 0.79	$ 2.04	$ 1.77
Diluted (in dollars per share)	$ 0.95	$ 0.78	$ 2.03	$ 1.76
Weighted Average Number of Common Shares:
Basic (in shares)	337,289	336,036	337,152	335,859
Diluted (in shares)	338,706	337,796	338,599	337,574

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Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 320.1	$ 265.0	$ 687.9	$ 595.4
Other comprehensive income (loss), net of tax:
Net unrealized holding gains (losses) arising during the period	85.8	36.9	195.4	9.2
Reclassification of net (gains) losses on sales included in investment income	0.0	6.0	0.0	6.0
Income tax benefit (expense)	0.2	1.2	(0.6)	1.2
Investment securities, net	86.0	32.1	194.8	4.4
Net change in defined benefit plans arising during the period	0.0	0.0	3.1	(0.3)
Amortization of net actuarial (gains) losses included in compensation and benefits expense	0.8	0.7	1.6	1.4
Income tax benefit (expense)	(0.3)	(0.2)	(1.8)	(0.4)
Defined benefit plans, net	0.5	0.5	2.9	0.7
Net unrealized holding gains (losses) arising during the period	0.0	0.0	0.0	(4.7)
Ineffectiveness on cash flow hedges included in (gains) losses on derivative investments	0.0	0.0	0.0	1.8
Amortization of effective portion of net (gains) losses on cash flow hedges included in interest expense	(0.3)	(0.3)	(0.6)	(0.6)
Income tax benefit (expense)	0.1	0.2	0.2	1.4
Derivative investments, net	(0.2)	(0.1)	(0.4)	(2.1)
Foreign currency translation adjustments	(1.7)	(2.6)	(5.0)	(6.6)
Income tax benefit (expense)	0.6	1.0	1.8	2.5
Foreign currency translation, net	(1.1)	(1.6)	(3.2)	(4.1)
Other comprehensive income (loss), net of tax	85.2	30.9	194.1	(1.1)
Comprehensive Income	$ 405.3	$ 295.9	$ 882.0	$ 594.3

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Consolidated Statements Of Shareholders' Equity - USD ($) shares in Thousands, $ in Millions	Total	Common Stock And Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Class A Common Stock [Member]	Class A Common Stock [Member] Common Stock And Additional Paid-In Capital [Member]	Class B Common Stock [Member]	Class B Common Stock [Member] Common Stock And Additional Paid-In Capital [Member]
Balance (in shares) at Dec. 31, 2014						335,452		3
Balance at December 31, 2015 at Dec. 31, 2014	$ 20,923.5	$ 17,600.0	$ 3,317.3	$ 6.2
Net income	595.4		595.4
Other comprehensive income (loss), net of tax	(1.1)			(1.1)
Dividends on common stock of $1.20 per share	(337.2)		(337.2)
Exercise of stock options (in shares)						652
Exercise of stock options	42.1	42.1
Excess tax benefits from option exercises and restricted stock vesting	1.3	1.3
Vesting of issued restricted Class A common stock, in shares						46
Vesting of issued restricted Class A common stock	(2.3)	(2.3)
Shares issued to Board of Directors, in shares						26
Shares issued to Board of Directors	2.4	2.4
Shares issued under Employee Stock Purchase Plan, in shares						10
Shares issued under Employee Stock Purchase Plan	1.0	1.0
Stock-based compensation	33.7	33.7
Balance (in shares) at Jun. 30, 2015						336,186		3
Balance at June 30, 2016 at Jun. 30, 2015	21,258.8	17,678.2	3,575.5	5.1
Balance (in shares) at Dec. 31, 2015					336,938	336,938	3	3
Balance at December 31, 2015 at Dec. 31, 2015	20,551.8	17,725.0	2,907.6	(80.8)
Net income	687.9		687.9
Other comprehensive income (loss), net of tax	194.1			194.1
Dividends on common stock of $1.20 per share	(406.2)		(406.2)
Exercise of stock options (in shares)						292
Exercise of stock options	20.0	20.0
Excess tax benefits from option exercises and restricted stock vesting	3.4	3.4
Vesting of issued restricted Class A common stock, in shares						181
Vesting of issued restricted Class A common stock	(10.5)	(10.5)
Shares issued to Board of Directors, in shares						27
Shares issued to Board of Directors	2.5	2.5
Shares issued under Employee Stock Purchase Plan, in shares						10
Shares issued under Employee Stock Purchase Plan	0.9	0.9
Stock-based compensation	30.0	30.0
Balance (in shares) at Jun. 30, 2016					337,448	337,448	3	3
Balance at June 30, 2016 at Jun. 30, 2016	$ 21,073.9	$ 17,771.3	$ 3,189.3	$ 113.3

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Consolidated Statements Of Shareholders' Equity (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Statement of Stockholders' Equity [Abstract]
Cash dividends on common stock, per share (in dollars per share)	$ 1.20	$ 1.00

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Consolidated Statements Of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash Flows from Operating Activities
Net income	$ 687.9	$ 595.4
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	30.0	33.7
Amortization of purchased intangibles	48.0	49.9
Depreciation and amortization	64.3	65.1
Gain on sale of BM&FBOVESPA shares	0.0	(5.9)
Debt prepayment costs	0.0	61.8
Loss on datacenter	27.1	0.0
Undistributed earnings, net of losses, of unconsolidated subsidiaries	(3.3)	(5.3)
Deferred income taxes	22.0	41.3
Change in:
Accounts receivable	(71.1)	(58.4)
Other current assets	6.0	8.1
Other assets	(20.3)	(15.1)
Accounts payable	6.8	(14.8)
Income taxes payable	(12.8)	(55.5)
Other current liabilities	(41.3)	(26.2)
Other liabilities	(5.3)	(0.1)
Other	5.2	3.7
Net Cash Provided by Operating Activities	743.2	677.7
Cash Flows from Investing Activities
Proceeds from maturities of available-for-sale marketable securities	36.4	19.1
Purchases of available-for-sale marketable securities	(40.3)	(19.2)
Purchases of available-for-sale marketable securities	(39.6)	(60.7)
Investments in business ventures	(3.8)	(5.0)
Proceeds from sale of BM&FBOVESPA shares	0.0	57.7
Settlement of derivative related to debt issuance	0.0	7.0
Net Cash Used in Investing Activities	(47.3)	(1.1)
Cash Flows from Financing Activities
Proceeds from debt, net of issuance costs	0.0	743.7
Repayment of debt	0.0	(673.0)
Cash dividends	(1,381.7)	(1,006.7)
Proceeds from finance lease obligation	130.0	0.0
Proceeds from exercise of stock options	20.0	42.1
Excess tax benefits related to employee option exercises and restricted stock vesting	3.4	1.3
Other	0.9	0.9
Net Cash Used in Financing Activities	(1,227.4)	(891.7)
Net change in cash and cash equivalents	(531.5)	(215.1)
Cash and cash equivalents, beginning of period	1,692.6	1,366.1
Cash and Cash Equivalents, End of Period	1,161.1	1,151.0
Supplemental Disclosure of Cash Flow Information
Income taxes paid	410.3	393.3
Interest paid	$ 42.4	$ 46.3

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Basis Of Presentation

6 Months Ended

Jun. 30, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis Of Presentation

Basis of Presentation

The consolidated financial statements consist of CME Group Inc. (CME Group) and its subsidiaries (collectively, the company), including Chicago Mercantile Exchange Inc. (CME), Board of Trade of the City of Chicago, Inc. (CBOT), New York Mercantile Exchange, Inc. (NYMEX), Commodity Exchange, Inc. (COMEX), CME Clearing Europe Limited (CMECE) and CME Europe Limited (CME Europe). CME, CBOT, NYMEX, COMEX, CMECE and CME Europe and their subsidiaries are referred to collectively as “the exchange” in the notes to the consolidated financial statements. The clearing houses include CME Clearing, which is the U.S. clearing house and a division of CME, and CMECE.

The accompanying interim consolidated financial statements have been prepared by CME Group without audit. Certain notes and other information normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States have been condensed or omitted. In the opinion of management, the accompanying consolidated financial statements include all normal recurring adjustments considered necessary to present fairly the financial position of the company at June 30, 2016 and December 31, 2015 and the results of operations and cash flows for the periods indicated. Quarterly results are not necessarily indicative of results for any subsequent period.

The accompanying consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto in CME Group’s Annual Report on Form 10-K for the year ended December 31, 2015, filed with the Securities and Exchange Commission (SEC) on February 26, 2016.

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Performance Bonds and Guaranty Fund Contributions (Notes)

6 Months Ended

Jun. 30, 2016

Performance Bonds and Guaranty Fund Contributions [Abstract]

Performance Bonds and Guaranty Fund Contributions

Performance Bonds and Guaranty Fund Contributions

Performance Bonds and Guaranty Fund Contributions. At June 30, 2016, performance bonds and guaranty fund contribution assets on the consolidated balance sheets include cash as well as U.S. Treasury securities and U.S. government agency securities with maturity dates of 90 days or less. U.S. Treasury securities and U.S. government agency securities are purchased by CME, at its discretion, using cash collateral. The benefits, including interest earned, and risks of ownership accrue to CME. Interest earned is included in investment income on the consolidated statements of income. These securities are classified as available-for-sale. At June 30, 2016, the amortized cost and fair value of the U.S. Treasury securities were $6,952.0 million and $6,952.3 million, respectively. At June 30, 2016, the amortized cost and fair value of the U.S. government securities were both $1,708.4 million. The U.S. Treasury securities and U.S. government agency securities will mature in the third quarter of 2016. Performance bonds and guaranty fund contribution assets also include overnight reverse repurchase agreements that were purchased by CME, at its discretion, using cash collateral. The fair value of the overnight securities under the reverse repurchase agreements was $200.9 million at June 30, 2016.

CME has been designated as a systemically important financial market utility by the Financial Stability Oversight Council and is authorized to establish and maintain a cash account at the Federal Reserve Bank of Chicago. CME has received approval to establish this account at the Federal Reserve Bank of Chicago for clearing members proprietary cash balances; however, the account is not live yet and CME continues to work through the operational details to begin utilizing the account.

Clearing House Contract Settlement. CME Clearing and CMECE mark-to-market open positions for all futures and options contracts twice a day (once a day for CME's cleared-only credit default swap and interest rate swap contracts). Based on values derived from the mark-to-market process, CME Clearing and CMECE require payments from clearing firms whose positions have lost value and make payments to clearing firms whose positions have gained value. Under the extremely unlikely scenario of simultaneous default by every clearing firm who has open positions with unrealized losses, the maximum exposure related to positions other than cleared-only credit default and interest rate swap contracts would be one half day of changes in fair value of all open positions, before considering the clearing houses' ability to access defaulting clearing firms' collateral deposits. For CME's cleared-only credit default swap and interest rate swap contracts, the maximum exposure related to CME Clearing's guarantee would be one full day of changes in fair value of all open positions, before considering CME Clearing's ability to access defaulting clearing firms' collateral. During the first six months of 2016, CME Clearing and CMECE transferred an average of approximately $3.6 billion a day through their clearing systems for settlement from clearing firms whose positions had lost value to clearing firms whose positions had gained value. CME Clearing and CMECE reduce their guarantee exposure through initial and maintenance performance bond requirements and mandatory guaranty fund contributions. The company believes that its guarantee liability is immaterial and therefore has not recorded any liability at June 30, 2016.

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Property (Notes)

6 Months Ended

Jun. 30, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure

Property

In March 2016, the company sold its datacenter in the Chicago area for $130.0 million. At the time of the sale, the company leased back a portion of the property. The sale-leaseback transaction was recognized under the financing method and not as a sale-leaseback arrangement under generally accepted accounting principles due to the company's participation in future revenues and development work, which constitutes continuing involvement in the datacenter. Under the financing method, the assets remain on the consolidated balance sheet throughout the term of the lease and the proceeds of $130.0 million from the transaction are recognized as a finance lease obligation within other liabilities and other current liabilities in the consolidated balance sheet. A portion of the lease payments will be recognized as a reduction of the finance lease obligation and a portion will be recognized as interest expense based on an imputed interest rate.

The net cost basis of the property and equipment legally sold was $153.1 million at the date of the sale. At March 31, 2016, the company wrote down the property and equipment to a fair value of $130.0 million based on qualitative indications of impairment and a quantitative analysis based on undiscounted cash flows. The company recognized a net loss on the transaction of $27.1 million through other expenses, which includes the write down to fair value and certain other transaction-related costs. The company recognized a total net loss and expenses of $28.6 million, which also includes $1.5 million of legal and other fees incurred. The property and equipment legally sold will continue to be recognized on the consolidated balance sheets and will continue to be depreciated on the consolidated statements of income over the term of the lease.

The lease has an initial lease term ending in March 2031 and contains two consecutive renewal options for five years. Future minimum lease payments under this non-cancellable lease will be payable as follows as of June 30, 2016 (in millions):

Year
Remainder of 2016	$	8.3
2017	16.7
2018	16.8
2019	16.8
2020	16.9
Thereafter	181.6
Total	$	257.1

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Intangible Assets And Goodwill

6 Months Ended

Jun. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets And Goodwill

Intangible Assets

Intangible assets consisted of the following at June 30, 2016 and December 31, 2015:

	June 30, 2016							December 31, 2015
(in millions)	Assigned Value		Accumulated Amortization			Net Book Value		Assigned Value		Accumulated Amortization			Net Book Value
Amortizable Intangible Assets:
Clearing firm, market data and other customer relationships	$	2,838.8	$	(801.8	)	$	2,037.0	$	2,838.8	$	(754.5	)	$	2,084.3
Technology-related intellectual property	29.4		(27.9		)	1.5		29.4		(27.2		)	2.2
Other	2.4		(1.0		)	1.4		2.4		(1.0		)	1.4
Total amortizable intangible assets	$	2,870.6	$	(830.7	)	2,039.9		$	2,870.6	$	(782.7	)	2,087.9
Indefinite-Lived Intangible Assets:
Trade names						450.0							450.0
Total intangible assets – other, net						$	2,489.9						$	2,537.9
Trading products (1)						$	17,175.3						$	17,175.3

(1) Trading products represent futures and options products acquired in our business combinations with CBOT Holdings, Inc., NYMEX Holdings, Inc. and The Board of Trade of Kansas City, Missouri, Inc. Clearing and transaction fees are generated through the trading of these products. These trading products, most of which have traded for decades, require authorization from the Commodity Futures Trading Commission (CFTC). Product authorizations from the CFTC have no term limits.

Total amortization expense for intangible assets was $24.0 million and $25.0 million for the quarters ended June 30, 2016 and 2015, respectively. Total amortization expense for intangible assets was $48.0 million and $49.9 million for the six months ended June 30, 2016 and 2015, respectively. As of June 30, 2016, the future estimated amortization expense related to amortizable intangible assets is expected to be as follows:

(in millions)	Amortization Expense
Remainder of 2016	$	48.1
2017	95.5
2018	94.7
2019	94.7
2020	94.7
2021	94.7
Thereafter	1,517.5

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Debt

6 Months Ended

Jun. 30, 2016

Debt Disclosure [Abstract]

Debt

Debt

In the first quarter of 2016, the company adopted the Financial Accounting Standards Board's (FASB) standards update on changes to the presentation of debt issuance costs. The update requires debt issuance costs related to a recognized debt liability to be presented as a deduction from the carrying value of the debt liability. Previously, debt issuance costs were recognized as deferred charges within other assets in the consolidated balance sheets. The standards update was applied on a retrospective basis, adjusting all prior periods presented, as if the new accounting methodology was in effect during those periods. At December 31, 2015, $12.1 million of debt issuance costs were reclassified in the consolidated balance sheet from other assets to long-term debt compared with what was previously reported. At June 30, 2016, $11.6 million of debt issuance costs were deducted from long-term debt. The change in accounting policy has been reflected in the table below.

Long-term debt consisted of the following at June 30, 2016 and December 31, 2015:

(in millions)	June 30, 2016		December 31, 2015
$750.0 million fixed rate notes due September 2022, stated rate of 3.00% (1)	$	744.8	$	744.4
$750.0 million fixed rate notes due March 2025, stated rate of 3.00% (2)	743.8		743.4
$750.0 million fixed rate notes due September 2043, stated rate of 5.30% (3)	741.6		741.5
Total long-term debt	$	2,230.2	$	2,229.3

(1) In August 2012, the company entered into a forward-starting interest rate swap agreement that modified the interest obligation associated with these notes so that the interest payable on the notes effectively became fixed at a rate of 3.32%.

(2) In December 2014, the company entered into a forward-starting interest rate swap agreement that modified the interest obligation associated with these notes so that the interest payable on the notes effectively became fixed at a rate of 3.11%.

(3) In August 2012, the company entered into a forward-starting interest rate swap agreement that modified the interest obligation associated with these notes so that the interest payable on the notes effectively became fixed at a rate of 4.73%.

Long-term debt maturities, at par value, were as follows at June 30, 2016:

(in millions)	Par Value
2017	$	—
2018	—
2019	—
2020	—
2021	—
Thereafter	2,250.0

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Income Tax (Notes)

6 Months Ended

Jun. 30, 2016

Income Tax Disclosure [Abstract]

Income Tax Disclosure

Income Taxes

In the first quarter of 2016, the company adopted the FASB's standards update that simplifies the classification of deferred tax assets and liabilities. The update eliminates the current requirement to present deferred tax assets and liabilities as current and non-current in a classified balance sheet. Instead, all deferred tax assets, along with valuation allowances, and deferred tax liabilities are required to be classified as non-current. Companies are still required to offset deferred tax assets and liabilities for each taxpaying component within a tax jurisdiction. Beginning in the first quarter of 2016, the company adopted this standards update on a prospective basis and classified all deferred tax assets and liabilities as non-current. Prior period deferred tax assets and liabilities were not retrospectively adjusted.

A net current deferred tax asset of $27.9 million was included in other current assets at December 31, 2015. During the first quarter of 2016, net current deferred tax assets of $27.9 million were reclassified to net long-term liabilities. Total net current deferred tax assets are primarily attributable to stock-based compensation and accrued expenses.

Net long-term deferred tax liabilities were $7.4 billion at June 30, 2016 and December 31, 2015. Net deferred tax liabilities are principally the result of purchase accounting for intangible assets in our various mergers, including CBOT Holdings, Inc. and NYMEX Holdings, Inc.

Valuation allowances of $49.4 million and $122.3 million have been provided on deferred tax assets at June 30, 2016 and December 31, 2015, respectively. At June 30, 2016 and December 31, 2015, valuation allowances were related to certain domestic net operating losses, foreign net operating losses as well as built in capital losses for which we do not believe that we currently meet the more-likely-than-not-threshold for recognition.

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Contingencies

6 Months Ended

Jun. 30, 2016

Loss Contingency [Abstract]

Contingencies

Contingencies

Legal and Regulatory Matters. In 2013, the CFTC filed suit against NYMEX and two former employees alleging disclosure of confidential customer information in violation of the Commodity Exchange Act. NYMEX’s motion to dismiss was denied in 2014. Based on its investigation to date and advice from legal counsel, the company believes that it has strong factual and legal defenses to the claim.

In the normal course of business, the company discusses matters with its regulators raised during regulatory examinations or otherwise subject to their inquiry and oversight. These matters could result in censures, fines, penalties or other sanctions. Management believes the outcome of any resulting actions will not have a material impact on its consolidated financial position or results of operations. However, the company is unable to predict the outcome or the timing of the ultimate resolution of these matters, or the potential fines, penalties or injunctive or other equitable relief, if any, that may result from these matters.

In addition, the company is a defendant in, and has potential for, various other legal proceedings arising from its regular business activities. While the ultimate results of such proceedings against the company cannot be predicted with certainty, the company believes that the resolution of any of these matters on an individual or aggregate basis will not have a material impact on its consolidated financial position or results of operations.

At December 31, 2015, the company had accrued $3.5 million for legal and regulatory matters that were probable and estimable. No accrual was required for legal and regulatory matters that were probable and estimable as of June 30, 2016.

Intellectual Property Indemnifications. Certain agreements with customers and other third parties related to accessing the CME platforms, utilizing market data services and licensing CME SPAN software may contain indemnifications from intellectual property claims that may be made against them as a result of their use of the applicable products and/or services. The potential future claims relating to these indemnifications cannot be estimated and therefore no liability has been recorded.

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Guarantees

6 Months Ended

Jun. 30, 2016

Guarantees [Abstract]

Guarantees

Guarantees

Mutual Offset Agreement. CME and Singapore Exchange Limited (SGX) have a mutual offset agreement with a current term through October 2016. This agreement enables market participants to open a futures position on one exchange and liquidate it on the other. The term of the agreement will automatically renew for a one-year period unless either party provides advance notice of their intent to terminate. CME must maintain U.S. Treasury securities or irrevocable, standby letters of credit as collateral for this agreement. At June 30, 2016, CME was contingently liable to SGX on letters of credit totaling $760.0 million. Regardless of the collateral, CME guarantees all cleared transactions submitted through SGX and would initiate procedures designed to satisfy these financial obligations in the event of a default, such as the use of performance bonds and guaranty fund contributions of the defaulting clearing firm. The company believes that its guarantee liability is immaterial and therefore has not recorded any liability at June 30, 2016.

Family Farmer and Rancher Protection Fund. In 2012, the company established the Family Farmer and Rancher Protection Fund (the Fund). The Fund is designed to provide payments, up to certain maximum levels, to family farmers, ranchers and other agricultural industry participants who use the company's agricultural commodity products and who suffer losses to their segregated account balances due to their CME clearing member becoming insolvent. Under the terms of the Fund, farmers and ranchers are eligible for up to $25,000 per participant. Farming and ranching cooperatives are eligible for up to $100,000 per cooperative. The Fund was established with a maximum of $100.0 million available for distribution to participants. Since its establishment, the Fund has made payments of approximately $2.0 million, which leaves $98.0 million available for future claims. If, at any time, payments due to participants were to exceed the amount remaining in the fund, payments would be pro-rated. Clearing members and customers must register with the company in advance and provide certain documentation in order to substantiate their eligibility. The company believes that its guarantee liability is immaterial and therefore has not recorded any liability at June 30, 2016.

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Accumulated Other Comprehensive Income (Notes)

6 Months Ended

Jun. 30, 2016

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Income (Loss)

The following tables present changes in the accumulated balances for each component of other comprehensive income (loss), including current period other comprehensive income (loss) and reclassifications out of accumulated other comprehensive income (loss):

(in millions)	Investment Securities			Defined Benefit Plans			Derivative Investments			Foreign Currency Translation			Total
Balance at December 31, 2015	$	(95.0	)	$	(36.6	)	$	59.6		$	(8.8	)	$	(80.8	)
Other comprehensive income (loss) before reclassifications and income tax benefit (expense)	195.4			3.1			—			(5.0		)	193.5
Amounts reclassified from accumulated other comprehensive income (loss)	—			1.6			(0.6		)	—			1.0
Income tax benefit (expense)	(0.6		)	(1.8		)	0.2			1.8			(0.4		)
Net current period other comprehensive income (loss)	194.8			2.9			(0.4		)	(3.2		)	194.1
Balance at June 30, 2016	$	99.8		$	(33.7	)	$	59.2		$	(12.0	)	$	113.3

(in millions)	Investment Securities			Defined Benefit Plans			Derivative Investments			Foreign Currency Translation			Total
Balance at December 31, 2014	$	(22.9	)	$	(31.3	)	$	62.6		$	(2.2	)	$	6.2
Other comprehensive income (loss) before reclassifications and income tax benefit (expense)	9.2			(0.3		)	(4.7		)	(6.6		)	(2.4		)
Amounts reclassified from accumulated other comprehensive income (loss)	(6.0		)	1.4			1.2			—			(3.4		)
Income tax benefit (expense)	1.2			(0.4		)	1.4			2.5			4.7
Net current period other comprehensive income (loss)	4.4			0.7			(2.1		)	(4.1		)	(1.1		)
Balance at June 30, 2015	$	(18.5	)	$	(30.6	)	$	60.5		$	(6.3	)	$	5.1

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Fair Value Measurements

6 Months Ended

Jun. 30, 2016

Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]

Fair Value Measurements

Fair Value Measurements

The company uses a three-level classification hierarchy of fair value measurements for disclosure purposes.

• Level 1 inputs, which are considered the most reliable evidence of fair value, consist of quoted prices (unadjusted) for identical assets or liabilities in active markets.

• Level 2 inputs consist of observable market data, such as quoted prices for similar assets and liabilities in active markets, or inputs other than quoted prices that are directly observable.

• Level 3 inputs consist of unobservable inputs which are derived and cannot be corroborated by market data or other entity-specific inputs.

Level 1 assets generally include U.S. Treasury securities, U.S. government agency securities, investments in publicly traded mutual funds, equity securities and corporate debt securities with quoted market prices. In general, the company uses quoted prices in active markets for identical assets to determine the fair value of marketable securities and equity investments. If quoted prices are not available to determine fair value, the company uses other inputs that are directly observable.

Assets included in level 2 generally consist of asset-backed securities. Asset-backed securities were measured at fair value based on matrix pricing using prices of similar securities with similar inputs such as maturity dates, interest rates and credit ratings.

Financial assets recorded in the consolidated balance sheet as of June 30, 2016 were classified in their entirety based on the lowest level of input that was significant to each asset's fair value measurement. There were no liabilities that were measured at fair value as of June 30, 2016. The following tables present financial instruments measured at fair value on a recurring basis:

	June 30, 2016
(in millions)	Level 1		Level 2		Level 3		Total
Assets at Fair Value:
Marketable securities:
Corporate debt securities	$	21.4	$	—	$	—	$	21.4
Mutual funds	58.0		—		—		58.0
Equity securities	0.1		—		—		0.1
Asset-backed securities	—		0.3		—		0.3
Total Marketable Securities	79.5		0.3		—		79.8
Performance bonds and guaranty fund contributions (1):
U.S. Treasury securities	6,952.3		—		—		6,952.3
U.S. government agencies securities	1,708.4		—		—		1,708.4
Equity investments	408.5		—		—		408.5
Total Assets at Fair Value	$	9,148.7	$	0.3	$	—	$	9,149.0

(1) Performance bonds and guaranty fund contributions on the consolidated balance sheet at June 30, 2016 include U.S. Treasury securities and U.S. government agency securities purchased with cash collateral.

There were no transfers of assets or liabilities between level 1, level 2 and level 3 during the first six months of 2016. There were no level 3 assets valued at fair value on a recurring basis during the first six months of 2016. The following is a reconciliation of level 3 liabilities valued at fair value on a recurring basis during the first six months of 2016.

(in millions)	Contingent Consideration
Fair value of liability at December 31, 2015	$	0.3
Realized and unrealized (gains) losses:
Included in other expenses	(0.3		)
Fair value of liability at June 30, 2016	$	—

In the first quarter of 2016, we sold a datacenter and leased back a portion of the property. Under generally accepted accounting principles, the transaction has been recognized under the financing method instead of recognized as a sale-leaseback arrangement. As a result, the property and equipment legally sold will continue to be recognized on the consolidated balance sheets and was written down to a fair value of $130.0 million at March 31, 2016. In the second quarter of 2016, we wrote down one of our strategic investments to a fair value of $1.7 million and recognized an impairment loss of $3.8 million. Both assessments were based on qualitative indications of impairment and a quantitative analysis of undiscounted cash flows. The fair values of the datacenter and strategic investment are considered level 3 and nonrecurring. There were no other level 3 assets or liabilities valued at fair value on a nonrecurring basis during the first six months of 2016.

The following presents the estimated fair values of long-term debt notes, which are carried at amortized cost on the consolidated balance sheets. The fair values, which are classified as level 2 under the fair value hierarchy, were estimated using quoted market prices. At June 30, 2016, the fair values were as follows:

(in millions)	Fair Value
$750.0 million fixed rate notes due September 2022, stated rate of 3.00%	$	796.2
$750.0 million fixed rate notes due March 2025, stated rate of 3.00%	789.7
$750.0 million fixed rates notes due September 2043, stated rate of 5.30%	961.5

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Earnings Per Share

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Basic earnings per share is computed by dividing net income attributable to the company by the weighted average number of shares of all classes of CME Group common stock outstanding for each reporting period. Diluted earnings per share reflects the increase in shares using the treasury stock method to reflect the impact of an equivalent number of shares of common stock if stock options were exercised and restricted stock awards were converted into common stock. Anti-dilutive stock options, restricted stock and performance share awards were as follows for the periods presented:

	Quarter Ended June 30,		Six Months Ended June 30,
(in thousands)	2016	2015	2016	2015
Stock options	320	456	320	456
Restricted stock and performance shares	—	8	—	11
Total	320	464	320	467

The following table presents the earnings per share calculation for the periods presented:

	Quarter Ended June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
Net Income (in millions)	$	320.1	$	265.0	$	687.9	$	595.4
Weighted Average Number of Common Shares (in thousands):
Basic	337,289		336,036		337,152		335,859
Effect of stock options, restricted stock and performance shares	1,417		1,760		1,447		1,715
Diluted	338,706		337,796		338,599		337,574
Earnings per Common Share:
Basic	$	0.95	$	0.79	$	2.04	$	1.77
Diluted	0.95		0.78		2.03		1.76

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Subsequent Events

6 Months Ended

Jun. 30, 2016

Subsequent Events [Abstract]

Subsequent Events

Subsequent Events

The company has evaluated subsequent events through the date the financial statements were issued and has determined that there are no subsequent events that require disclosure.

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Property (Tables)

6 Months Ended

Jun. 30, 2016

Property, Plant and Equipment [Abstract]

Other Commitments

Future minimum lease payments under this non-cancellable lease will be payable as follows as of June 30, 2016 (in millions):

Year
Remainder of 2016	$	8.3
2017	16.7
2018	16.8
2019	16.8
2020	16.9
Thereafter	181.6
Total	$	257.1

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Intangible Assets And Goodwill (Tables)

6 Months Ended

Jun. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Components of intangible assets

Intangible assets consisted of the following at June 30, 2016 and December 31, 2015:

	June 30, 2016							December 31, 2015
(in millions)	Assigned Value		Accumulated Amortization			Net Book Value		Assigned Value		Accumulated Amortization			Net Book Value
Amortizable Intangible Assets:
Clearing firm, market data and other customer relationships	$	2,838.8	$	(801.8	)	$	2,037.0	$	2,838.8	$	(754.5	)	$	2,084.3
Technology-related intellectual property	29.4		(27.9		)	1.5		29.4		(27.2		)	2.2
Other	2.4		(1.0		)	1.4		2.4		(1.0		)	1.4
Total amortizable intangible assets	$	2,870.6	$	(830.7	)	2,039.9		$	2,870.6	$	(782.7	)	2,087.9
Indefinite-Lived Intangible Assets:
Trade names						450.0							450.0
Total intangible assets – other, net						$	2,489.9						$	2,537.9
Trading products (1)						$	17,175.3						$	17,175.3

(1) Trading products represent futures and options products acquired in our business combinations with CBOT Holdings, Inc., NYMEX Holdings, Inc. and The Board of Trade of Kansas City, Missouri, Inc. Clearing and transaction fees are generated through the trading of these products. These trading products, most of which have traded for decades, require authorization from the Commodity Futures Trading Commission (CFTC). Product authorizations from the CFTC have no term limits

Future estimated amortization expense

As of June 30, 2016, the future estimated amortization expense related to amortizable intangible assets is expected to be as follows:

(in millions)	Amortization Expense
Remainder of 2016	$	48.1
2017	95.5
2018	94.7
2019	94.7
2020	94.7
2021	94.7
Thereafter	1,517.5

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Debt (Tables)

6 Months Ended

Jun. 30, 2016

Debt Disclosure [Abstract]

Schedule Of Short-Term And Long-Term Debt

Long-term debt consisted of the following at June 30, 2016 and December 31, 2015:

(in millions)	June 30, 2016		December 31, 2015
$750.0 million fixed rate notes due September 2022, stated rate of 3.00% (1)	$	744.8	$	744.4
$750.0 million fixed rate notes due March 2025, stated rate of 3.00% (2)	743.8		743.4
$750.0 million fixed rate notes due September 2043, stated rate of 5.30% (3)	741.6		741.5
Total long-term debt	$	2,230.2	$	2,229.3

(1) In August 2012, the company entered into a forward-starting interest rate swap agreement that modified the interest obligation associated with these notes so that the interest payable on the notes effectively became fixed at a rate of 3.32%.

(2) In December 2014, the company entered into a forward-starting interest rate swap agreement that modified the interest obligation associated with these notes so that the interest payable on the notes effectively became fixed at a rate of 3.11%.

(3) In August 2012, the company entered into a forward-starting interest rate swap agreement that modified the interest obligation associated with these notes so that the interest payable on the notes effectively became fixed at a rate of 4.73%.

Long-term debt maturities at par value

Long-term debt maturities, at par value, were as follows at June 30, 2016:

(in millions)	Par Value
2017	$	—
2018	—
2019	—
2020	—
2021	—
Thereafter	2,250.0

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Accumulated Other Comprehensive Income (Tables)

6 Months Ended

Jun. 30, 2016

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

The following tables present changes in the accumulated balances for each component of other comprehensive income (loss), including current period other comprehensive income (loss) and reclassifications out of accumulated other comprehensive income (loss):

(in millions)	Investment Securities			Defined Benefit Plans			Derivative Investments			Foreign Currency Translation			Total
Balance at December 31, 2015	$	(95.0	)	$	(36.6	)	$	59.6		$	(8.8	)	$	(80.8	)
Other comprehensive income (loss) before reclassifications and income tax benefit (expense)	195.4			3.1			—			(5.0		)	193.5
Amounts reclassified from accumulated other comprehensive income (loss)	—			1.6			(0.6		)	—			1.0
Income tax benefit (expense)	(0.6		)	(1.8		)	0.2			1.8			(0.4		)
Net current period other comprehensive income (loss)	194.8			2.9			(0.4		)	(3.2		)	194.1
Balance at June 30, 2016	$	99.8		$	(33.7	)	$	59.2		$	(12.0	)	$	113.3

(in millions)	Investment Securities			Defined Benefit Plans			Derivative Investments			Foreign Currency Translation			Total
Balance at December 31, 2014	$	(22.9	)	$	(31.3	)	$	62.6		$	(2.2	)	$	6.2
Other comprehensive income (loss) before reclassifications and income tax benefit (expense)	9.2			(0.3		)	(4.7		)	(6.6		)	(2.4		)
Amounts reclassified from accumulated other comprehensive income (loss)	(6.0		)	1.4			1.2			—			(3.4		)
Income tax benefit (expense)	1.2			(0.4		)	1.4			2.5			4.7
Net current period other comprehensive income (loss)	4.4			0.7			(2.1		)	(4.1		)	(1.1		)
Balance at June 30, 2015	$	(18.5	)	$	(30.6	)	$	60.5		$	(6.3	)	$	5.1

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2016

Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]

Financial instruments measured at fair value on a recurring basis

The following tables present financial instruments measured at fair value on a recurring basis:

	June 30, 2016
(in millions)	Level 1		Level 2		Level 3		Total
Assets at Fair Value:
Marketable securities:
Corporate debt securities	$	21.4	$	—	$	—	$	21.4
Mutual funds	58.0		—		—		58.0
Equity securities	0.1		—		—		0.1
Asset-backed securities	—		0.3		—		0.3
Total Marketable Securities	79.5		0.3		—		79.8
Performance bonds and guaranty fund contributions (1):
U.S. Treasury securities	6,952.3		—		—		6,952.3
U.S. government agencies securities	1,708.4		—		—		1,708.4
Equity investments	408.5		—		—		408.5
Total Assets at Fair Value	$	9,148.7	$	0.3	$	—	$	9,149.0

(1) Performance bonds and guaranty fund contributions on the consolidated balance sheet at June 30, 2016 include U.S. Treasury securities and U.S. government agency securities purchased with cash collateral.

Reconciliation of assets and liabilities valued at fair value on a recurring basis using significant unobservable inputs (level 3)

The following is a reconciliation of level 3 liabilities valued at fair value on a recurring basis during the first six months of 2016.

(in millions)	Contingent Consideration
Fair value of liability at December 31, 2015	$	0.3
Realized and unrealized (gains) losses:
Included in other expenses	(0.3		)
Fair value of liability at June 30, 2016	$	—

Fair value of Debt Instruments

At June 30, 2016, the fair values were as follows:

(in millions)	Fair Value
$750.0 million fixed rate notes due September 2022, stated rate of 3.00%	$	796.2
$750.0 million fixed rate notes due March 2025, stated rate of 3.00%	789.7
$750.0 million fixed rates notes due September 2043, stated rate of 5.30%	961.5

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

Anti-dilutive stock options, restricted stock and performance share awards were as follows for the periods presented:

	Quarter Ended June 30,		Six Months Ended June 30,
(in thousands)	2016	2015	2016	2015
Stock options	320	456	320	456
Restricted stock and performance shares	—	8	—	11
Total	320	464	320	467

Basic And Diluted Earnings Per Share

The following table presents the earnings per share calculation for the periods presented:

	Quarter Ended June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
Net Income (in millions)	$	320.1	$	265.0	$	687.9	$	595.4
Weighted Average Number of Common Shares (in thousands):
Basic	337,289		336,036		337,152		335,859
Effect of stock options, restricted stock and performance shares	1,417		1,760		1,447		1,715
Diluted	338,706		337,796		338,599		337,574
Earnings per Common Share:
Basic	$	0.95	$	0.79	$	2.04	$	1.77
Diluted	0.95		0.78		2.03		1.76

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Performance Bonds and Guaranty Fund Contributions (Details) $ in Millions	6 Months Ended
	Jun. 30, 2016 USD ($)
Guarantor Obligations [Line Items]
Average Daily Clearing Settlement	$ 3,600.0
US Treasury Securities [Member]
Guarantor Obligations [Line Items]
Available-for-sale Securities, Amortized Cost Basis	6,952.0
Available-for-sale Securities at Fair Value	6,952.3
US Government Agencies Debt Securities [Member]
Guarantor Obligations [Line Items]
Available-for-sale Securities, Amortized Cost Basis	1,708.4
Available-for-sale Securities at Fair Value	1,708.4
Repurchase Agreements [Member]
Guarantor Obligations [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	$ 200.9

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Property (Details) $ in Millions	Jun. 30, 2016 USD ($)
Property, Plant and Equipment [Abstract]
Remainder of 2016	$ 8.3
2017	16.7
2018	16.8
2019	16.8
2020	16.9
Thereafter	181.6
Other Commitment	$ 257.1

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Property Details (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016
Property, Plant and Equipment [Abstract]
Proceeds from Sale of Buildings	$ 130.0
Impaired Assets to be Disposed of by Method Other than Sale, Carrying Value of Asset	153.1
Property, Plant, and Equipment, Fair Value Disclosure	130.0	$ 130.0
Impairment of Real Estate	27.1
Total Cost of Transaction	28.6
Legal Fees for Sale-Leaseback	$ 1.5

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Intangible Assets And Goodwill (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of purchased intangibles	$ 24.0	$ 25.0	$ 48.0	$ 49.9

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Intangible Assets And Goodwill (Components Of Intangible Assets) (Details) - USD ($) $ in Millions		Jun. 30, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets		$ 2,489.9	$ 2,537.9
Other Indefinite-lived Intangible Assets	[1]	17,175.3	17,175.3
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets		450.0	450.0
Clearing Firm, Market Data And Other Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		2,838.8	2,838.8
Accumulated amortization		(801.8)	(754.5)
Net book value		2,037.0	2,084.3
Technology-Related Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		29.4	29.4
Accumulated amortization		(27.9)	(27.2)
Net book value		1.5	2.2
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		2.4	2.4
Accumulated amortization		(1.0)	(1.0)
Net book value		1.4	1.4
Total Amortizable Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		2,870.6	2,870.6
Accumulated amortization		(830.7)	(782.7)
Net book value		$ 2,039.9	$ 2,087.9

[1] )Trading products represent futures and options products acquired in our business combinations with CBOT Holdings, Inc., NYMEX Holdings, Inc. and The Board of Trade of Kansas City, Missouri, Inc. Clearing and transaction fees are generated through the trading of these products. These trading products, most of which have traded for decades, require authorization from the Commodity Futures Trading Commission (CFTC). Product authorizations from the CFTC have no term limits

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Intangible Assets And Goodwill (Future Estimated Amortization Expense) (Details) $ in Millions	Jun. 30, 2016 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2016	$ 48.1
2017	95.5
2018	94.7
2019	94.7
2020	94.7
2021	94.7
Thereafter	$ 1,517.5

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Debt (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Debt Disclosure [Abstract]
Unamortized Debt Issuance Expense	$ 11.6	$ 12.1

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Debt (Schedule Of Short-Term And Long-Term Debt) (Details) - USD ($) $ in Millions	1 Months Ended			6 Months Ended
	Mar. 31, 2015	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long-term debt				$ 2,230.2	$ 2,229.3
Forward starting interest rate swap agreement fixed rate	3.11%	4.73%	3.32%
$750.0 million fixed rate notes due September 2022, stated rate of 3.00% [Member]
Debt Instrument [Line Items]
Long-term debt				744.8	744.4
Debt Instrument, Face Amount				$ 750.0
Debt Instrument, Maturity Date				Sep. 01, 2022
Debt Instrument, Interest Rate, Stated Percentage				3.00%
$750.0 million fixed rate notes due March 2025, stated rate of 3.00% [Member]
Debt Instrument [Line Items]
Long-term debt				$ 743.8	743.4
Debt Instrument, Face Amount				$ 750.0
Debt Instrument, Maturity Date				Mar. 01, 2025
Debt Instrument, Interest Rate, Stated Percentage				3.00%
$750.0 million fixed rate notes due September 2043, stated rate of 5.30% [Member]
Debt Instrument [Line Items]
Long-term debt				$ 741.6	$ 741.5
Debt Instrument, Face Amount				$ 750.0
Debt Instrument, Maturity Date				Sep. 01, 2043
Debt Instrument, Interest Rate, Stated Percentage				5.30%

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Debt (Schedule Of Maturities Of Long-Term Debt) (Details) $ in Millions	Jun. 30, 2016 USD ($)
Debt Disclosure [Abstract]
2017	$ 0.0
2018	0.0
2019	0.0
2020	0.0
2021	0.0
Thereafter	$ 2,250.0

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Income Tax (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Gross, Current	$ 27.9	$ 27.9
Deferred income tax liabilities, net	7,352.7	7,358.3
Deferred Tax Assets, Valuation Allowance, Noncurrent	$ 49.4	$ 122.3

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Contingencies (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Loss Contingency [Abstract]
Accrued liability related to all outstanding legal matters	$ 0.0	$ 3.5

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Guarantees (Details)	6 Months Ended
	Jun. 30, 2016 USD ($) years
Guarantor Obligations [Line Items]
Agreement automatic renewal period (in years) | years	1
Contingent liability to SGX, amount of irrevocable letters of credit	$ 760,000,000
Family Farmer and Ranchers Protection Fund [Member]
Guarantor Obligations [Line Items]
Payment per participant	25,000
Payment per cooperative	100,000
FutureLosses	100,000,000
Payments under Guarantee	2,000,000
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 98,000,000

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Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Balance at December 31, 2015			$ 20,551.8	$ 20,923.5
Other comprehensive income (loss), net of tax	$ 85.2	$ 30.9	194.1	(1.1)
Balance at June 30, 2016	21,073.9	21,258.8	21,073.9	21,258.8
Investment Securities [Member]
Balance at December 31, 2015			(95.0)	(22.9)
Comprehensive Income Before Reclassification Adjustments			195.4	9.2
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax			0.0	(6.0)
Other Comprehensive Income (Loss), Net of Tax			(0.6)	1.2
Other comprehensive income (loss), net of tax			194.8	4.4
Balance at June 30, 2016	99.8	(18.5)	99.8	(18.5)
Defined Benefit Plans [Member]
Balance at December 31, 2015			(36.6)	(31.3)
Comprehensive Income Before Reclassification Adjustments			3.1	(0.3)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax			1.6	1.4
Other Comprehensive Income (Loss), Net of Tax			(1.8)	(0.4)
Other comprehensive income (loss), net of tax			2.9	0.7
Balance at June 30, 2016	(33.7)	(30.6)	(33.7)	(30.6)
Derivative Investments [Member]
Balance at December 31, 2015			59.6	62.6
Comprehensive Income Before Reclassification Adjustments			0.0	(4.7)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax			(0.6)	1.2
Other Comprehensive Income (Loss), Net of Tax			0.2	1.4
Other comprehensive income (loss), net of tax			(0.4)	(2.1)
Balance at June 30, 2016	59.2	60.5	59.2	60.5
Foreign Currency Translation [Member]
Balance at December 31, 2015			(8.8)	(2.2)
Comprehensive Income Before Reclassification Adjustments			(5.0)	(6.6)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax			0.0	0.0
Other Comprehensive Income (Loss), Net of Tax			1.8	2.5
Other comprehensive income (loss), net of tax			(3.2)	(4.1)
Balance at June 30, 2016	(12.0)	(6.3)	(12.0)	(6.3)
Accumulated Other Comprehensive Income (Loss) [Member]
Balance at December 31, 2015			(80.8)	6.2
Comprehensive Income Before Reclassification Adjustments			193.5	(2.4)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax			1.0	(3.4)
Other Comprehensive Income (Loss), Net of Tax			(0.4)	4.7
Other comprehensive income (loss), net of tax			194.1	(1.1)
Balance at June 30, 2016	$ 113.3	$ 5.1	$ 113.3	$ 5.1

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Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016
Debt Disclosure [Abstract]
Property, Plant, and Equipment, Fair Value Disclosure	$ 130.0	$ 130.0
Investment Owned, at Fair Value	1.7
Other than Temporary Impairment Losses, Investments	$ 3.8

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Fair Value Measurements (Financial Instruments Measured At Fair Value On A Recurring Basis) (Details) $ in Millions	Jun. 30, 2016 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment Owned, at Fair Value	$ 1.7
Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities	79.8
Performance bond reinvestment U.S. Treasuries	6,952.3
Performance bond reinvestment U.S. Agency Securities	1,708.4
Investment Owned, at Fair Value	408.5
Total Assets at Fair Value	9,149.0
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities at Fair Value	21.4
Fair Value, Measurements, Recurring [Member] | Exchange Traded Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading Securities at Fair Value	58.0
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities at Fair Value	0.1
Fair Value, Measurements, Recurring [Member] | Asset Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities at Fair Value	0.3
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities	79.5
Performance bond reinvestment U.S. Treasuries	6,952.3
Performance bond reinvestment U.S. Agency Securities	1,708.4
Investment Owned, at Fair Value	408.5
Total Assets at Fair Value	9,148.7
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities at Fair Value	21.4
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Exchange Traded Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading Securities at Fair Value	58.0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities at Fair Value	0.1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Asset Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities at Fair Value	0.0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities	0.3
Performance bond reinvestment U.S. Treasuries	0.0
Performance bond reinvestment U.S. Agency Securities	0.0
Investment Owned, at Fair Value	0.0
Total Assets at Fair Value	0.3
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities at Fair Value	0.0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Exchange Traded Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading Securities at Fair Value	0.0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities at Fair Value	0.0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Asset Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities at Fair Value	0.3
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities	0.0
Performance bond reinvestment U.S. Treasuries	0.0
Performance bond reinvestment U.S. Agency Securities	0.0
Investment Owned, at Fair Value	0.0
Total Assets at Fair Value	0.0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities at Fair Value	0.0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Exchange Traded Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading Securities at Fair Value	0.0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities at Fair Value	0.0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Asset Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities at Fair Value	$ 0.0

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Fair Value Measurements (Reconciliation Using Significant Unobservable Inputs) (Details) - Fair Value, Measurements, Recurring [Member] - Fair Value, Inputs, Level 3 [Member] $ in Millions	6 Months Ended
	Jun. 30, 2016 USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of liability, beginning balance	$ 0.3
Included in other expenses	(0.3)
Fair value of liability, ending balance	$ 0.0

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Fair Value Measurements (Estimated Fair Values of Long-Term Debt) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2016 USD ($)
$750.0 million fixed rate notes due September 2022, stated rate of 3.00% [Member]
Debt Instrument, Face Amount	$ 750.0
Debt Instrument, Maturity Date	Sep. 01, 2022
Debt Instrument, Interest Rate, Stated Percentage	3.00%
$750.0 million fixed rate notes due March 2025, stated rate of 3.00% [Member]
Debt Instrument, Face Amount	$ 750.0
Debt Instrument, Maturity Date	Mar. 01, 2025
Debt Instrument, Interest Rate, Stated Percentage	3.00%
$750.0 million fixed rate notes due September 2043, stated rate of 5.30% [Member]
Debt Instrument, Face Amount	$ 750.0
Debt Instrument, Maturity Date	Sep. 01, 2043
Debt Instrument, Interest Rate, Stated Percentage	5.30%
Fair Value, Inputs, Level 2 [Member] | $750.0 million fixed rate notes due September 2022, stated rate of 3.00% [Member]
Debt Instrument, Fair Value Disclosure	$ 796.2
Fair Value, Inputs, Level 2 [Member] | $750.0 million fixed rate notes due March 2025, stated rate of 3.00% [Member]
Debt Instrument, Fair Value Disclosure	789.7
Fair Value, Inputs, Level 2 [Member] | $750.0 million fixed rate notes due September 2043, stated rate of 5.30% [Member]
Debt Instrument, Fair Value Disclosure	$ 961.5

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Earnings Per Share (Narrative) (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	320	464	320	467
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	320	456	320	456
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	8	0	11

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Earnings Per Share (Net Income Attributable To CME Group) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Net income	$ 320.1	$ 265.0	$ 687.9	$ 595.4
Basic (in shares)	337,289	336,036	337,152	335,859
Dilutive Securities, Effect on EPS	1,417	1,760	1,447	1,715
Diluted (in shares)	338,706	337,796	338,599	337,574
Earnings per common share, basic (in dollars per share)	$ 0.95	$ 0.79	$ 2.04	$ 1.77
Earnings per common share, diluted (in dollars per share)	$ 0.95	$ 0.78	$ 2.03	$ 1.76