Cboe Global Markets (CBOE) 10-K 21 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Billions, except Share data, unless otherwise specified	Dec. 31, 2013	Feb. 10, 2014	Jun. 30, 2013
Entity Information [Line Items]	'	'	'
Entity Registrant Name	'CBOE Holdings, Inc.	'	'
Entity Central Index Key	'0001374310	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Document Type	'10-K	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Amendment Flag	'false	'	'
Entity Common Stock, Shares Outstanding	'	86,483,851	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Public Float	'	'	$4

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current Assets:	'	'
Cash and cash equivalents	$221,341	$135,597
Accounts receivable—net allowances of 2013 - $266 and 2012 - $340	49,888	45,666
Marketing fee receivable	8,869	5,216
Income Taxes Receivable, Current	22,039	11,717
Other prepaid expenses	4,007	4,146
Other current assets	2,717	567
Total Current Assets	308,861	202,909
Investments in Affiliates	14,581	14,270
Land	4,914	4,914
Property and Equipment:	'	'
Construction in progress	23	89
Building	65,448	62,442
Furniture and equipment	271,437	263,155
Less accumulated depreciation and amortization	-269,614	-251,642
Total Property and Equipment—Net	67,294	74,044
Other Assets:	'	'
Software development work in progress	7,853	4,370
Data processing software and other assets (less accumulated amortization—2013, $147,322; 2012, $133,862)	38,086	38,351
Total Other Assets—Net	45,939	42,721
Total	441,589	338,858
Current Liabilities:	'	'
Accounts payable and accrued expenses	52,958	45,148
Dividends Payable, Current	43,831	0
Marketing fee payable	9,442	5,808
Deferred revenue	1,100	1,084
Post-retirement medical benefits	127	110
Total Current Liabilities	107,458	52,150
Long-term Liabilities:	'	'
Post-retirement medical benefits	2,110	1,794
Income tax liability	29,903	20,857
Other long-term liabilities	3,856	3,946
Deferred Tax Liabilities, Net, Noncurrent	13,745	20,989
Total Long-term Liabilities	49,614	47,586
Commitments and Contingencies	'	'
Total Liabilities	157,072	99,736
Stockholders’ Equity:	'	'
Preferred stock, $0.01 par value: 20,000,000 shares authorized, no shares issued and outstanding at December 31, 2013 or 2012	0	0
Additional paid-in-capital	90,985	67,812
Retained earnings	349,290	275,491
Treasury stock at cost – 5,074,755 shares at December 31, 2013 and 3,998,591 shares at December 31, 2012	-155,627	-104,201
Accumulated other comprehensive loss	-1,050	-893
Stockholders' Equity Attributable to Parent	284,517	239,122
Liabilities and Stockholders’ Equity	441,589	338,858
Unrestricted Common Stock [Member]	'	'
Stockholders’ Equity:	'	'
Unrestricted common stock, $0.01 par value: 325,000,000 shares authorized; 91,845,492 issued and 86,770,737 outstanding at December 31, 2013; 91,270,274 issued and 87,271,683 outstanding at December 31, 2012	$919	$913

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Current Assets:	'	'
Accounts receivable, allowances (in dollars)	$266	$340
Other Assets:	'	'
Data processing software and other assets, accumulated amortization (in dollars)	$147,322	$133,862
Shareholders' Equity:	'	'
Preferred stock, par value (in dollars, per share)	$0.01	$0.01
Preferred Stock, Shares Authorized	20,000,000	20,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Treasury stock at cost, shares	5,074,755	3,998,591
Common Class A2	'	'
Shareholders' Equity:	'	'
Common stock, par value (in dollars per share)	$0	$0
Common stock, shares authorized	0	0
Common stock, shares issued	0	0
Common stock, shares outstanding	0	0
Unrestricted Common Stock	'	'
Shareholders' Equity:	'	'
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, shares authorized	325,000,000	325,000,000
Common stock, shares issued	91,845,492	91,270,274
Common stock, shares outstanding	86,770,737	87,271,683

Consolidated_Statement_of_Inco

Consolidated Statement of Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Revenues:	'	'	'
Transaction fees	$397,218	$357,146	$373,065
Access fees	61,022	64,070	68,693
Exchange services and other fees	37,250	31,368	18,181
Market data fees	24,911	24,360	19,906
Regulatory fees	36,631	20,995	19,243
Other revenue	15,018	14,399	9,056
Total Operating Revenues	572,050	512,338	508,144
Operating Expenses:	'	'	'
Employee costs	118,083	104,196	104,454
Depreciation and amortization	34,488	31,485	34,094
Data processing	17,898	19,603	17,933
Outside services	34,473	36,300	27,310
Royalty fees	56,576	46,135	47,822
Trading volume incentives	4,355	6,275	14,239
Travel and promotional expenses	9,806	10,006	9,812
Facilities costs	5,053	5,066	5,400
Other expenses	5,504	9,175	5,448
Total Operating Expenses	286,236	268,241	266,512
Operating Income	285,814	244,097	241,632
Other Income/(Expense):	'	'	'
Investment income	63	149	142
Net loss from investment in affiliates	-2,221	-1,695	-811
Interest and other borrowing costs	0	0	-879
Total Other Expense	-2,158	-1,546	-1,548
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	283,656	242,551	240,084
Income tax provision	107,657	85,156	100,678
Net Income	175,999	157,395	139,406
Net Income allocated to participating securities	2,136	2,141	2,824
Net Income Allocated to Common Stockholders	$173,863	$155,254	$136,582
Net income per share allocated to common stockholders (Note 14)	'	'	'
Basic (in dollars per share)	$1.99	$1.78	$1.52
Diluted—net income per share to common stockholders	$1.99	$1.78	$1.52
Weighted average shares used in computing income per share:	'	'	'
Weighted Average Number of Shares Outstanding, Basic	87,331	87,460	89,994
Diluted	87,331	87,460	89,994

Consolidated_Statement_of_Comp

Consolidated Statement of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net Income	$175,999	$157,395	$139,406
Post retirement benefit obligation	-157	6	73
Comprehensive Income	175,842	157,401	139,479
Net Income allocated to participating securities	2,136	2,141	2,824
Comprehensive Income allocated to common stockholders	$173,706	$155,260	$136,655

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net Income (Loss) Attributable to Parent	$175,999,000	$157,395,000	$139,406,000
Adjustments to reconcile net income to net cash flows from operating activities:	'	'	'
Depreciation and amortization	34,488,000	31,485,000	34,094,000
Other amortization	114,000	88,000	90,000
Provision for deferred income taxes	-7,145,000	-495,000	940,000
Stock-based compensation	20,823,000	12,348,000	12,618,000
Equity in loss of affiliates	1,976,000	1,695,000	352,000
Impairment of investment in affiliates and other assets	245,000	0	459,000
Loss on disposition of property	3,000	1,000	1,225,000
Changes in assets and liabilities:	'	'	'
Accounts receivable	-4,222,000	-8,088,000	168,000
Marketing fee receivable	-3,653,000	-21,000	2,620,000
Income taxes receivable	-10,321,000	-4,961,000	-1,219,000
Prepaid expenses	139,000	6,000	704,000
Other current assets	-2,151,000	498,000	-528,000
Accounts payable and accrued expenses	5,516,000	1,113,000	5,784,000
Marketing fee payable	3,634,000	43,000	-2,584,000
Deferred revenue and other liabilities	-75,000	773,000	-16,000
Post-retirement benefit obligations	-36,000	-17,000	-4,000
Income tax liability	9,046,000	8,672,000	9,020,000
Net Cash Flows provided by Operating Activities	224,380,000	200,535,000	203,129,000
Cash Flows from Investing Activities:	'	'	'
Capital and other assets expenditures	-28,673,000	-30,066,000	-29,143,000
Other	8,000	0	112,000
Net Cash Flows used in Investing Activities	-31,197,000	-32,977,000	-30,281,000
Cash Flows from Financing Activities:	'	'	'
Payment of quarterly dividends	-58,369,000	-47,828,000	-40,372,000
Payment of special dividend	'	-66,197,000	'
Excess Tax Benefit from Share-based Compensation, Financing Activities	2,356,000	0	0
Purchase of unrestricted stock from employees	-6,136,000	-3,128,000	-4,339,000
Purchase of unrestricted common stock under announced program	-45,290,000	-49,744,000	-46,990,000
Net Cash Flows used in Financing Activities	-107,439,000	-166,897,000	-91,701,000
Net Increase (Decrease) in Cash and Cash Equivalents	85,744,000	661,000	81,147,000
Cash and Cash Equivalents at Beginning of Period	135,597,000	134,936,000	53,789,000
Cash and Cash Equivalents at End of Period	221,341,000	135,597,000	134,936,000
Supplemental Disclosure of Cash Flow Information	'	'	'
Cash paid for income taxes	113,741,000	82,633,000	93,224,000
Non-cash activities:	'	'	'
Change in post-retirement benefit obligation	255,000	-25,000	-90,000
Dividends Payable, Current	43,831,000	0	0
Unpaid liability to acquire equipment and software	3,048,000	755,000	1,537,000
Due to Affiliate, Current	0	0	1,250,000
Investment in Signal Trading [Member]	'	'	'
Cash Flows from Investing Activities:	'	'	'
Investment in Signal Trading Systems, LLC	-1,920,000	-1,661,000	'
Investment in IPXI [Member]	'	'	'
Cash Flows from Investing Activities:	'	'	'
Investment in Signal Trading Systems, LLC	($612,000)	($1,250,000)	($1,250,000)

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders’ Equity (USD $)	Total	Common Class A2 [Member]	Preferred Stock	Unrestricted Common Stock [Member]	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
In Thousands
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Beginning of Period at Dec. 31, 2010	$175,874	$383	$0	$518	$42,858	$133,087	$0	($972)
Conversion of Stock, Amount Converted	0	-383	'	383	'	'	'	'
Dividends, Common Stock, Cash	-40,372	'	'	'	'	-40,372	'	'
Share-based Compensation	12,618	'	'	'	12,618	'	'	'
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	0	'	'	7	-7	'	'	'
Excess Tax Benefit from Share-based Compensation, Financing Activities	0	'	'	'	'	'	'	'
Treasury Stock, Value, Acquired, Cost Method	-51,329	'	'	'	'	'	-51,329	'
Net income	139,406	'	'	'	'	139,406	'	'
Post-retirement benefit obligation adjustments- net of tax expense	73	'	'	'	'	'	'	73
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest End of Period at Dec. 31, 2011	236,270	0	0	908	55,469	232,121	-51,329	-899
Dividends, Common Stock, Cash	-114,025	'	'	'	'	-114,025	'	'
Share-based Compensation	12,348	'	'	'	12,348	'	'	'
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	0	'	'	5	-5	'	'	'
Excess Tax Benefit from Share-based Compensation, Financing Activities	0	'	'	'	'	'	'	'
Treasury Stock, Value, Acquired, Cost Method	-52,872	'	'	'	'	'	-52,872	'
Net income	157,395	'	'	'	'	'	'	'
Post-retirement benefit obligation adjustments- net of tax expense	6	'	'	'	'	'	'	6
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest End of Period at Dec. 31, 2012	239,122	0	0	913	67,812	275,491	-104,201	-893
Dividends, Common Stock, Cash	-102,200	'	'	'	'	-102,200	'	'
Share-based Compensation	20,823	'	'	'	20,823	'	'	'
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	0	'	'	6	-6	'	'	'
Excess Tax Benefit from Share-based Compensation, Financing Activities	2,356	'	'	'	'	'	'	'
Treasury Stock, Value, Acquired, Cost Method	-51,426	'	'	'	'	'	-51,426	'
Net income	175,999	'	'	'	'	'	'	'
Post-retirement benefit obligation adjustments- net of tax expense	-157	'	'	'	'	'	'	157
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest End of Period at Dec. 31, 2013	$284,517	$0	$0	$919	$90,985	$349,290	($155,627)	($1,050)

Consolidated_Statements_of_Sto1

Consolidated Statements of Stockholders Equity (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Stockholders' Equity [Abstract]	'	'	'
Post-retirement benefit obligation adjustment, tax expense	($99,000)	$19,000	$17,000

Summary_of_Significant_Account

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Notes)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Significant Accounting Policies [Text Block]	'
	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Nature of Business—CBOE Holdings, Inc. ("CBOE Holdings" or the "Company") is the holding company of registered securities exchanges, subject to oversight by the Securities and Exchange Commission ("SEC"), and a designated contract market under the jurisdiction of the Commodity Futures Trading Commission ("CFTC"). Our principal business is providing a marketplace for the trading of equity options, ETP options and index options and futures contracts.
	Basis of Presentation—The consolidated financial statements include the accounts and results of operations of CBOE Holdings and its wholly-owned subsidiaries, including: Chicago Board Options Exchange, Incorporated ("CBOE"), CBOE Futures Exchange, LLC ("CFE"), C2 Options Exchange, Incorporated ("C2"), Market Data Express, LLC, Chicago Options Exchange Building Corporation and DerivaTech Corporation. Inter-company balances and transactions have been eliminated in consolidation. The Company reports the results of its operations in one reporting segment.
	Use of Estimates—The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities and reported amounts of revenues and expenses. On an ongoing basis, management evaluates its estimates based upon historical experience, observance of trends, information available from outside sources and various other assumptions that are believed to be reasonable under the circumstances. Actual results may differ from these estimates under different conditions or assumptions.
	Cash and Cash Equivalents—Cash and cash equivalents include highly liquid investments with maturities of three months or less from the date of purchase. The Company's places its cash and cash equivalents with highly-rated financial institutions, limits the amount of credit exposure with any one financial institution and conducts ongoing evaluations of the creditworthiness of the financial institutions with which it does business; therefore concentrations of credit risk are limited. There are no redemption restrictions on the Company's invested cash balances.
	Accounts Receivable—Accounts receivable consists primarily of transaction and regulatory fees from the Options Clearing Corporation, OCC and the Company's share of distributable revenue receivable from OPRA. Accounts receivable are primarily collected through OCC, and are with large, highly-rated clearing firms; therefore concentrations of credit risk are limited. The Company has no financing related receivables.
	Prepaid expenses—Prepaid expenses primarily consist of prepaid software maintenance and licensing expenses which are amortized over the respective periods.
	Investments in Affiliates—Investments in affiliates represent investments in OCC, Signal Trading Systems, LLC ("Signal Trading"), IPXI Holdings, LLC ("IPXI") and CBOE Stock Exchange, LLC ("CBSX").
	The investments in OCC and IPXI are accounted for under the cost-method of accounting for investments.
	The investment in Signal Trading is accounted for under the equity method.
	The investment in CBSX is accounted for under the equity method.
	Investments in affiliates are periodically reviewed to determine whether any events or changes in circumstances indicate that the investments may be other than temporarily impaired. In the event of impairment, the Company would recognize a loss for the difference between the carrying amount and the estimated fair value of the investment.
	Property and Equipment—Property and equipment are carried at cost, net of accumulated depreciation. Depreciation is calculated using the straight-line method, generally over five to forty years. Leasehold improvements are amortized over the lesser of their estimated useful lives or the remaining term of the applicable leases.
	Property and Equipment—Construction in Progress is capitalized and carried at cost. Upon completion, the projects are placed in service and amortized over the appropriate useful lives, using the straight-line method commencing with the date the asset is placed in service.
	Software Development Work in Progress and Data Processing Software and Other Assets — The Company expenses software development costs as incurred during the preliminary project stage, while capitalizing costs incurred during the application development stage, which includes design, coding, installation and testing activities. Estimated useful lives are three to five years for internally developed and other data processing software and generally are five years or less for other assets.
	Employee Benefit Plans—The funded status of a post retirement benefit plan is recognized in the Consolidated Balance Sheet and changes in that funded status are recognized in the year of change in other comprehensive income (loss). Plan assets and obligations are measured at year end. The Company recognizes changes in actuarial gains and losses and prior service costs in the year in which the changes occur through accumulated other comprehensive loss.
	Commitments and Contingencies—Litigation—The Company accrues loss contingencies when the loss is both probable and estimable. All legal costs incurred in connection with loss contingencies are expensed as service is provided.
	Revenue Recognition—Revenue recognition policies for specific sources of revenue are discussed below:
	Transaction Fees:    Transaction fees are a function of three variables: (1) exchange fee rates; (2) trading volume; and (3) transaction mix between contract type. Transaction fees are assessed on a per contract basis and are considered earned upon the execution of a trade and are recognized on a trade date basis. Transaction fees are presented net of applicable volume discounts. In the event liquidity providers prepay for transaction fees, revenue is recognized based on the attainment of volume thresholds resulting in the amortization of the prepayment over the calendar year.
	Access Fees:    Access fees represent fees assessed to Trading Permit Holders for the opportunity to trade and use other related functions of CBOE, C2 and CFE. Access fees are recognized during the period the service is provided.
	Exchange Services and Other Fees:  Exchange services and other fees include system services, trading floor charges and application revenue. Exchange services and other fees are recognized during the period the service is provided.
	Market Data Fees:    Market data fees include Options Price Reporting Authority ("OPRA") income and Company market data services. OPRA is a limited liability company consisting of representatives of the member exchanges and is authorized by the SEC to provide consolidated options information. The Company's market data services are provided through CBOE Streaming Markets ("CSM") and other services. OPRA income is allocated based upon the individual exchange's relative volume of total cleared options transactions. The Company receives monthly estimates of OPRA's distributable revenue (See Note 4) and income is distributed on a quarterly basis. Company market data fees represent charges for current and historical options and futures data. Market data services are recognized in the period the data is provided.
	Regulatory Fees:   Regulatory fees are primarily based on the number of customer contracts traded on all U.S. options exchanges by Trading Permit Holders and are recognized on a trade-date basis. Under the rules of each of our options exchanges, as required by the SEC, any revenue derived from regulatory fees and fines cannot be used for non-regulatory purposes.
	Concentration of Revenue: At December 31, 2013, there were one hundred four CBOE clearing firms, two of which cleared a combined 48% of our billings collected through the OCC in 2013. The next largest clearing firm accounted for approximately 6% of our billings collected through the OCC. No one Trading Permit Holder using the clearing services of the top two clearing firms represented more than 39% of the revenue collected through the OCC in 2013 or 2012 for the respective clearing firm. Should a clearing firm withdraw from CBOE, we believe the Trading Permit Holder portion of that firm's trading activity would likely transfer to another clearing firm.
	The two largest clearing firms mentioned above clear the majority of the market-maker sides of transactions at CBOE, C2 and at all of the U.S. options exchanges. If either of these firms were to withdraw from the business of market-maker clearing, and market-makers were unable to transfer to another firm, this could create significant disruption to the U.S. options markets, including ours.
	Advertising Costs—Advertising costs, including print advertising and production costs, product promotion campaigns and seminar, conference convention costs and, in prior years, sponsorships with local professional sports organizations, related to trade shows and other industry events, are expensed as incurred or amortized over the respective period. The Company incurred advertising costs of $5.4 million, $5.3 million and $5.5 million for the years ended December 31, 2013, 2012 and 2011, respectively. Advertising costs are included in travel and promotional expenses in the consolidated statements of income.
	Stock-Based Compensation—Stock-based compensation is based on the fair value of the award on the grant date and recognized over the related service period, net of estimated forfeitures.
	Income Taxes—Deferred income taxes arise from temporary differences between the tax basis and book basis of assets and liabilities. A valuation allowance is recognized if it is anticipated that some or all of a deferred tax asset may not be realized.
	The Company accounts for uncertainty in income taxes recognized in its consolidated financial statements by using a more-likely-than-not recognition threshold based solely on the technical merits of the position taken or expected to be taken. Interest and penalties are recorded within the provision for income taxes in the Company's consolidated statements of income and are classified on the consolidated balance sheets with the related liability for unrecognized tax benefits. See Note 9 for further discussion of the Company's income taxes.
	Recent Accounting Pronouncements— There are no recent accounting pronouncements that would impact our consolidated balance sheets, statements of income, comprehensive income or cash flows.

Share_Repurchase_Program

Share Repurchase Program	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Share Repurchase Program	'
	SHARE REPURCHASE PROGRAM
	On August 2, 2011, the Company announced that its board of directors had approved a share repurchase program that authorizes the Company to purchase up to $100 million of its outstanding unrestricted common stock. On July 31, 2012, the Company announced that its board of directors had approved the repurchase of an additional $100 million of its outstanding unrestricted common stock. On December 10, 2013, the Company announced that its board of directors had approved the repurchase of an additional $100 million of its outstanding unrestricted common stock. This authorization was in addition to any amount remaining under the August 2011 and July 2012 authorizations. The program permits the Company to purchase shares through a variety of methods, including in the open market or through privately negotiated transactions, in accordance with applicable securities laws. It does not obligate the Company to make any repurchases at any specific time or situation.
	For the twelve months ended December 31, 2013, the Company purchased 932,400 shares of unrestricted common stock at an average cost per share of $48.57 totaling $45.3 million in purchases under the program.
	Since inception of the program, the Company purchased 4,639,824 shares of unrestricted common stock at an average cost per share of $30.61 totaling $142.0 million in purchases under the program.

Investment_in_Affiliates

Investment in Affiliates	12 Months Ended
	Dec. 31, 2013
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]	'
Investments in and Advances to Affiliates, Schedule of Investments [Text Block]	'
	INVESTMENT IN AFFILIATES
	At December 31, 2013 and 2012, the Company's investment in affiliates was comprised of the following (in thousands):
		2013		2012
	Investment in OCC	$	333	$	333
	Investment in Signal Trading	11,130		11,437
	Investment in IPXI	3,118		2,500
	Investment in CBSX	—		—
	Investment in Affiliates	$	14,581	$	14,270
	The Company holds a 20% investment in OCC which is accounted for under the cost-method of accounting for investments because of the Company's inability to exercise significant influence.
	In May 2010, CBOE acquired a 50% interest in Signal Trading from FlexTrade Systems, Inc. ("FlexTrade"). The joint venture develops and markets a multi-asset front-end order entry system, known as "Pulse," which has a particular emphasis on options trading. The Company assists in the development of the terminals and provides marketing services to the joint venture, which is accounted for under the equity method. We account for the investment in Signal Trading under the equity method due to the substantive participating rights provided to the other limited liability company member, FlexTrade. In the twelve months ended December 31, 2013, the Company recorded contributions to and equity losses in Signal Trading of $1.7 million and $1.9 million, respectively.
	In 2011 and 2012, the Company, through DerivaTech Corporation, a wholly-owned subsidiary, acquired a 10.0% interest in IPXI for $2.5 million. The Company contributed an additional $0.6 million to IPXI in October 2013 thus increasing the total investment to $3.1 million. The investment in IPXI is accounted for under the cost-method of accounting for investments. IPXI is creating a marketplace for a unique portfolio of financial products and services that facilitate investment in and risk management of intellectual property assets, helping buyers and sellers efficiently allocate intellectual property rights.
	The Company currently holds a 49.96% equity interest in CBSX in return for non-cash property contributions. CBSX, which is not a self-regulatory organization, is considered a stock trading facility of CBOE. CBOE is responsible for the compliance and regulation of the CBSX marketplace. In addition, the Company has a services agreement under which it provides financial, accounting and technology support. CBSX is financed through existing capital and cash from operations. In December 2011, CBSX acquired the National Stock Exchange, Inc. ("NSX"), a registered national securities exchange that trades stocks. CBSX acquired NSX with existing cash on hand, and, as such, no additional capital was contributed to CBSX. The NSX stockholders did not receive any capital in CBSX. Accordingly, there was no impact on our investment in CBSX.

Related_Parties

Related Parties	12 Months Ended
	Dec. 31, 2013
Related Party Transactions [Abstract]	'
Related Party Transactions Disclosure [Text Block]	'
	RELATED PARTIES
	The Company collected transaction and other fees of $610.3 million, $544.3 million and $542.8 million in the years ended December 31, 2013, 2012 and 2011, respectively, by drawing on accounts of CBOE and C2 market participants held at OCC. The amounts collected by OCC for CBOE included $99.7 million, $96.1 million and $93.7 million, respectively, of marketing fees during the years ended December 31, 2013, 2012 and 2011. The Company had a receivable due from OCC of $48.6 million and $42.3 million at December 31, 2013 and 2012, respectively.
	OPRA is a limited liability company consisting of representatives of the member exchanges and is authorized by the SEC to provide consolidated options information. This information is provided by the exchanges and is sold to outside news services and customers. OPRA's operating income is distributed among the exchanges based on their relative volume of total cleared options transactions. Operating income distributed to the Company was $12.9 million, $15.0 million and $12.9 million during the years ended December 31, 2013, 2012 and 2011, respectively. The Company had a receivable from OPRA of $3.9 million and $3.4 million at December 31, 2013 and 2012, respectively.
	The Company incurred re-billable expenses on behalf of CBSX for expenses such as employee costs, computer equipment and software of $4.6 million, $3.7 million and $5.1 million during the years ended December 31, 2013, 2012 and 2011, respectively. These amounts are included as a reduction of the underlying expenses. The Company had a receivable from CBSX of $0.4 million and $0.5 million at December 31, 2013 and 2012, respectively.
	Options Regulatory Surveillance Authority ("ORSA") is responsible for conducting insider trading investigations related to options on behalf of all options exchanges. CBOE is the Regulatory Services Provider under a plan entered into by the options exchanges and approved by the SEC to administer ORSA. The Company incurred re-billable expenses on behalf of ORSA for expenses such as employee costs, occupancy and operating systems of $2.3 million, $2.1 million and $2.0 million, during the years ended December 31, 2013, 2012 and 2011, respectively. These amounts are included as a reduction of the underlying expenses. The Company had a receivable due from ORSA of $1.2 million and $1.4 million at December 31, 2013 and 2012, respectively.

Accounts_Payable_and_Accured_L

Accounts Payable and Accured Liabilities	12 Months Ended
	Dec. 31, 2013
Accounts Payable and Accrued Liabilities, Current [Abstract]	'
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	'
	ACCOUNTS PAYABLE AND ACCRUED LIABILITIES
	At December 31, 2013 and 2012, accounts payable and accrued liabilities consisted of the following (in thousands):
		2013		2012
	Compensation and benefit related liabilities	$	22,193	$	18,306
	Royalties	13,512		10,529
	Accounts payable	4,219		735
	Facilities	1,824		1,932
	Legal	1,602		1,706
	Linkage	1,157		1,116
	Liability related to SEC matter	—		5,000
	Other	8,451		5,824
	Total	$	52,958	$	45,148

Marketing_Fee

Marketing Fee	12 Months Ended
	Dec. 31, 2013
Marketing Fee [Abstract]	'
Marketing Fees [Text Block]	'
	MARKETING FEE
	The Company facilitates the collection and payment of marketing fees assessed on certain trades taking place at CBOE. Funds resulting from the marketing fees are made available to Designated Primary Market-Makers and Preferred Market-Makers as an economic inducement to route orders to CBOE. Pursuant to ASC 605-45, Revenue Recognition—Principal Agent Considerations, the Company reflects the assessments and payments on a net basis, with no impact on revenues or expenses.
	As of December 31, 2013 and 2012, amounts assessed by the Company on behalf of others included in current assets totaled $8.9 million and $5.2 million, respectively and payments due to others included in current liabilities totaled $9.4 million

Deferred_Revenue

Deferred Revenue	12 Months Ended
	Dec. 31, 2013
Deferred Revenue [Abstract]	'
Deferred Revenue Disclosure [Text Block]	'
	DEFERRED REVENUE
	The following tables summarize the activity in deferred revenue for the years ended December 31, 2013 and 2012.
	(in thousands)	Balance at		Cash		Revenue			Balance at
		December 31,		Additions		Recognition			December 31,
		2012							2013
	Liquidity provider sliding scale	$	—	$	29,232	$	(29,232	)	$	—
	Other, net	1,084		7,348		(7,332		)	1,100
	Total deferred revenue	$	1,084	$	36,580	$	(36,564	)	$	1,100
	(in thousands)	Balance at		Cash		Revenue			Balance at
		December 31,		Additions		Recognition			December 31,
		2011							2012
	Liquidity provider sliding scale	—		$	29,759	$	(29,759	)	$	—
	Other, net	351		4,940		(4,207		)	1,084
	Total deferred revenue	$	351	$	34,699	$	(33,966	)	$	1,084
	Liquidity providers who prepay transaction fees, at a minimum, for the first two levels of the liquidity provider sliding scale were eligible to receive reduced fees for contract volume above 2,000,000 per month in 2013 and 810,000 per month in 2012. The prepayment of 2013 and 2012 transaction fees totaled $29.2 million and $29.8 million, respectively. These amount were amortized and recorded as transaction fees over the respective twelve month periods.

Employee_Benefits

Employee Benefits	12 Months Ended
	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]	'
Postemployment Benefits Disclosure [Text Block]	'
	EMPLOYEE BENEFITS
	Employees are eligible to participate in the Chicago Board Options Exchange SMART Plan ("SMART Plan"). The SMART Plan is a defined contribution plan, which is qualified under Internal Revenue Code Section 401(k). The Company contributed $4.0 million, $3.9 million and $4.5 million to the SMART Plan for each of the years ended December 31, 2013, 2012 and 2011, respectively.
	Eligible employees may participate in the Supplemental Employee Retirement Plan, Executive Retirement Plan and Deferred Compensation Plan. Each plan is a defined contribution plan that is non-qualified by Internal Revenue Code regulations. The Company contributed $1.6 million, $1.4 million and $1.3 million to the above plans for the years ended December 31, 2013, 2012 and 2011, respectively.
	The Company has a post-retirement medical plan for certain current and former members of senior management. The Company recorded immaterial post-retirement benefits expense for the years ended December 31, 2013, 2012 and 2011, resulting from the amortization of service costs and actuarial expense included in accumulated other comprehensive loss at December 31, 2013, 2012 and 2011.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Tax Disclosure [Text Block]	'
	INCOME TAXES
	A reconciliation of the statutory federal income tax rate to the effective income tax rate for the years ended December 31, 2013, 2012 and 2011 is as follows:
		2013			2012			2011
	Statutory federal income tax rate	35	%		35	%		35	%
	State income tax rate, net of federal income tax effect	3.6			4.8			5.5
	Section 199 deductions	(2.1	)		(7.5	)		—
	Other, net	1.5			2.8			1.4
	Effective income tax rate	38	%		35.1	%		41.9	%
	During the twelve months ended December 31, 2012, the Company filed amended returns for 2008, 2009 and 2010 and completed its return for 2011 and recognized, as a discrete item, in the aggregate, a $12.9 million net benefit for a Section 199 deduction for U.S. production activities which encompasses all personal property, including computer software for prior year periods.
	The components of income tax expense for the years ended December 31, 2013, 2012 and 2011 are as follows (in thousands):
		2013				2012				2011
	Current:
	Federal	$	93,844			$	65,054			$	76,637
	State	20,958				20,597				23,101
	Total current	114,802				85,651				99,738
	Deferred:
	Federal	(4,636		)		406				(48		)
	State	(2,509		)		(901		)		988
	Total deferred	(7,145		)		(495		)		940
	Total	$	107,657			$	85,156			$	100,678
	At December 31, 2013 and 2012, the net deferred income tax liability (in thousands):
		2013				2012
	Deferred tax assets	$	25,144			$	22,935
	Deferred tax liabilities	(38,889		)		(43,924		)
	Net deferred income tax liability	$	(13,745	)		$	(20,989	)
	The tax effect of temporary differences giving rise to significant portions of deferred tax assets and liabilities at December 31, 2013 and 2012 are presented below (in thousands):
		2013				2012
	Deferred tax assets:
	Intangibles	$	50			$	89
	Accrued compensation and benefits	11,233				9,221
	Property, equipment and technology, net	697				570
	Investment in affiliates	6,158				7,933
	Other	7,006				5,122
	Total deferred tax assets	25,144				22,935
	Deferred tax liabilities:
	Property, equipment and technology, net	(36,180		)		(36,930		)
	Investment in affiliates	(1,683		)		(1,687		)
	Prepaid	(1,027		)		(996		)
	Other	1				(4,311		)
	Total deferred tax liabilities	(38,889		)		(43,924		)
	Net deferred tax liabilities	$	(13,745	)		$	(20,989	)
	The net deferred tax liabilities are classified as long-term liabilities in the Consolidated Balance Sheets at December 31, 2013 and 2012.
	A reconciliation of the beginning and ending uncertain tax positions, excluding interest and penalties, is as follows (in thousands):
		2013				2012				2011
	Balance as of January 1	$	19,493			$	12,185			$	3,165
	Gross increases on tax positions in prior period	549				3,401				9,186
	Gross decreases on tax positions in prior period	(18		)		(833		)		(2,215		)
	Gross increases on tax positions in current period	7,270				4,740				2,768
	Lapse of statue of limitations	(549		)		—				(719		)
	Balance as of December 31	$	26,745			$	19,493			$	12,185
	As of December 31, 2013, 2012 and 2011, the Company had $26.7 million, $19.5 million and $11.4 million, respectively, of uncertain tax positions excluding interest and penalties, which, if recognized in the future, would affect the annual effective income tax rate. Reductions to uncertain tax positions from the lapse of the applicable statutes of limitations during the next twelve months are estimated to be approximately $6.6 million, not including any potential new additions.
	Estimated interest costs and penalties are classified as part of the provision for income taxes in the Company's consolidated statements of income and were $1.8 million, $0.6 million and $0.1 million for the periods ended December 31, 2013, 2012 and 2011, respectively. Accrued interest and penalties were $3.2 million, $1.4 million and $0.8 million as of December 31, 2013, 2012 and 2011, respectively.
	The Company is subject to U.S. federal tax, Illinois, New Jersey, and New York state taxes and Washington, D.C. taxes, as well as taxes in other local jurisdictions.  The Company has open tax years from 2007 on for New York, 2008 on for Federal, 2009 on for Illinois, and 2010 on for New Jersey and Washington, D.C.  The Internal Revenue Service is currently auditing 2010 and is looking at specific line items from 2008 to 2012 due to the filing by the Company of amended returns containing the recognition of certain credits and deductions.  The Illinois Department of Revenue is currently auditing 2009 and 2010.  The New York State Department of Taxation and Finance is currently auditing the 2007 through 2009 tax years.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Disclosures [Text Block]	'
	FAIR VALUE MEASUREMENTS
	Fair value is the price that would be received upon sale of an asset or paid upon transfer of a liability in an orderly transaction between market participants at the measurement date and in the principal or most advantageous market for that asset or liability. The fair value should be calculated based on assumptions that market participants would use in pricing the asset or liability, not on assumptions specific to the entity. In addition, the fair value of liabilities should include consideration of non-performance risk, including the Company’s own credit risk.
	The Company applied Financial Accounting Standards Board ("FASB") ASC 820, Fair Value Measurement and Disclosure, which provides guidance for using fair value to measure assets and liabilities by defining fair value and establishing the framework for measuring fair value. ASC 820 applies to financial and nonfinancial instruments that are measured and reported on a fair value basis. The three-level hierarchy of fair value measurements is based on whether the inputs to those measurements are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s market assumptions. The fair-value hierarchy requires the use of observable market data when available and consists of the following levels:
	•	Level 1—Unadjusted inputs based on quoted markets for identical assets or liabilities.
	•	Level 2—Observable inputs, either direct or indirect, not including Level 1, corroborated by market data or based upon quoted prices in non-active markets.
	•	Level 3—Unobservable inputs that reflect management’s best assumptions of what market participants would use in valuing the asset or liability.
	The Company has included a tabular disclosure for financial assets that are measured at fair value on a recurring basis in the consolidated balance sheet as of December 31, 2013 and 2012. The Company holds no financial liabilities that are measured at fair value on a recurring basis.
	(amounts in thousands)	Level 1		Level 2		Level 3		Total
	Assets at fair value:
	Money market funds	$	207,000	—		—		$	207,000
	Total assets at fair value at December 31, 2013	$	207,000	$	—	$	—	$	207,000
	(amounts in thousands)	Level 1		Level 2		Level 3		Total
	Assets at fair value:
	Money market funds	126,000		—		—		126,000
	Total assets at fair value at December 31, 2012	$	126,000	$	—	$	—	$	126,000
	The Company, through DerivaTech Corporation, a wholly-owned subsidiary, acquired a 10.0% interest in IPXI Holdings, LLC ("IPXI") for $2.5 million. The Company contributed an additional $0.6 million in October 2013. The investment, measured at fair value on a non-recurring basis, is classified as level 3 as the fair value was based on both observable and unobservable inputs.

Commitments_and_Contigencies

Commitments and Contigencies	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies Disclosure [Text Block]	'
	COMMITMENTS AND CONTINGENCIES
	As of December 31, 2013, the end of the period covered by this report, the Company was subject to the various legal proceedings and claims discussed below, as well as certain other legal proceedings and claims that have not been fully resolved and that have arisen in the ordinary course of business.
	The Company reviews its legal proceedings and claims, regulatory reviews and inspections and other legal proceedings on an ongoing basis and follows appropriate accounting guidance when making accrual and disclosure decisions. The Company establishes accruals for those contingencies where the incurrence of a loss is probable and can be reasonably estimated, and we disclose the amount accrued and the amount of a reasonably possible loss in excess of the amount accrued, if such disclosure is necessary for our financial statements to not be misleading. The Company does not record liabilities when the likelihood that the liability has been incurred is probable, but the amount cannot be reasonably estimated, or when the liability is believed to be only reasonably possible or remote. The Company's assessment of whether a loss is reasonably possible or probable is based on its assessment of the ultimate outcome of the matter following all appeals.
	Estimates of probable losses resulting from patent litigation involving the Company are inherently difficult to make, particularly when the Company's view of the case is significantly different than that expressed by the plaintiff. The Company has not recorded a liability related to damages in connection with these matters.
	As of December 31, 2013, the Company does not think that there is a reasonable possibility that any material loss exceeding the amounts already recognized for these reviews, inspections or other legal proceedings, if any, has been incurred. While the consequences of certain unresolved proceedings are not presently determinable, the outcome of any litigation is inherently uncertain and an adverse outcome from certain matters could have a material effect on our earnings in any given reporting period.
	Index Options Litigation
	On November 15, 2006, CBOE, The McGraw-Hill Companies, Inc. ("McGraw-Hill") and CME Group Index Services, LLC (substituted for Dow Jones & Co.) ("Dow Jones") asserted claims in the Circuit Court of Cook County, Illinois against ISE and its parent company ("ISE"), seeking a declaration to prevent ISE from offering SPX and DJX options and to prevent OCC from issuing and clearing such options. ISE filed a lawsuit on November 2, 2006 in the United States District Court for the Southern District of New York, seeking a declaration that the rights asserted by McGraw-Hill and Dow Jones are preempted by federal law. The New York action was stayed during the Illinois action. The Illinois court has permanently restrained and enjoined ISE from listing or providing an exchange market for the trading of SPX and DJX options and enjoined OCC from issuing, clearing or settling the exercise of such ISE options. The Illinois Appellate Court affirmed the lower court's ruling on May 25, 2012 and the Illinois Supreme Court denied ISE's appeal of this decision. The U.S. Supreme Court denied ISE's Petition for Certiorari on May 13, 2013. ISE sought leave to amend its complaint in the New York Action. On December 18, 2013, the New York court denied ISE's petition and dismissed the case. That decision was not appealed.
	Patent Litigation
	ISE -- '707
	On November 22, 2006, ISE filed an action in the United States District Court for the Southern District of New York claiming that CBOE's Hybrid trading system infringes ISE's U.S. Patent No. 6,618,707 ("the '707 patent"). On January 31, 2007, CBOE filed an action in federal court in the Northern District of Illinois seeking a declaratory judgment that the '707 patent was not infringed, not valid and/or not enforceable against CBOE. The New York case was transferred to the Northern District of Illinois on August 9, 2007.
	On March 14, 2013, ISE conceded to an adverse judgment in the trial in this matter and asked that the judge enter judgment for CBOE. ISE has appealed this matter with the Federal Circuit.
	On August 15, 2012, C2 filed a declaratory judgment complaint against ISE in the United States District Court for the Northern District of Illinois alleging that the '707 patent is not valid, not infringed and not enforceable in light of decisions in the CBOE case involving the same patent. This case has been stayed pending the outcome of the CBOE ‘707 litigation.
	ISE -- QRM
	On November 12, 2012, CBOE brought suit against ISE in the United States District Court for the Northern District of Illinois alleging that ISE infringes three patents related to quote risk monitor ("QRM") technology. CBOE has requested injunctive relief and monetary damages. On February 20, 2013, the court ruled that the case be transferred to the United States District Court for the Southern District of New York. On September 6, 2013, ISE petitioned the United States Patent and Trademark Office ("USPTO") to institute a Covered Business Method ("CBM") Patent Review of CBOE’s three QRM patents. On October 31, 2013, the court stayed the litigation pending the CBM Patent Review at the USPTO.
	Other
	As a self-regulatory organization under the jurisdiction of the SEC, with respect to CBOE and C2, and as a designated contract market under the jurisdiction of the CFTC, with respect to CFE, we are subject to routine reviews and inspections by the SEC and the CFTC.
	We are also currently a party to various other legal proceedings including those already mentioned. Management does not believe that the outcome of any of these other reviews, inspections or other legal proceedings will have a material impact on our consolidated financial position, results of operations or cash flows.
	Leases and Other Obligations
	The Company leases facilities with lease terms remaining from 5 months to 136 months as of December 31, 2013. Total rent expense related to these lease obligations, reflected in data processing and facilities costs line items on the Consolidated Statements of Income, for the years ended December 31, 2013, 2012 and 2011 were $3.0 million, $3.5 million and $3.2 million, respectively. Future minimum payments under these non-cancelable leases are as follows at December 31, 2013 (in thousands):
	Year	Operating		Total
		Leases
	2014	$	2,562	$	2,562
	2015	2,348		2,348
	2016	2,298		2,298
	2017	1,117		1,117
	2018	550		550
	Total	$	8,875	$	8,875
	In addition to the non-cancelable leases the Company has contractual obligations related to certain advertising programs and licensing agreements with various licensors. The licensing agreements contain annual minimum fee requirements that total $12.2 million for the next five years.

StockBased_Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2013
Share-based Compensation [Abstract]	'
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	'
	STOCK-BASED COMPENSATION
	Stock-based compensation is based on the fair value of the award on the date of grant, which is recognized over the related service period, net of estimated forfeitures. The service period is the period over which the related service is performed, which is generally the same as the vesting period.
	On January 13, 2010, the board approved the CBOE Holdings, Inc. Long Term Incentive Plan (the "LTIP"). The board amended and restated the LTIP, effective upon receiving stockholder approval, which was received at the May 17, 2011 annual meeting of stockholders. The LTIP provides that an aggregate of 4,248,497 shares of the Company's common stock are reserved for issuance to participants under the LTIP.
	The Compensation Committee of the Company's board of directors administers the LTIP and may designate any of the following as a participant under the LTIP: any officer or other employee of the Company or its affiliates or individuals engaged to become an officer or employee and non-employee directors of the Company. The LTIP permits the granting of non-qualified stock options, restricted stock, restricted stock units, incentive compensation awards or any combination of the foregoing. The Compensation Committee has the authority and complete discretion to prescribe, amend and rescind rules and regulations relating to the LTIP, select participants and to determine the form and terms of any awards.
	On February 6, 2013, the Company granted 390,272 shares of restricted stock to certain officers and employees at a fair value of $34.23 per share, the closing price of the Company's stock on the grant date. The shares have a three year vesting period and vesting accelerates upon the occurrence of a change in control of the Company. On May 23, 2013, the Company granted 83,880 shares of restricted stock, at a fair value of $40.54 per share, which included 22,212 granted to the board of directors and 61,668 shares, of which 50% vested upon grant, to the incoming Chief Executive Officer and President and Chief Operating Officer in connection with their new positions. The unvested portion of the shares granted on May 23, 2013 have a one year vesting period and vesting accelerates upon the occurrence of a change in control of the Company. Unvested portions of the restricted stock will be forfeited if the officer, director or employee leaves the company prior to the applicable vesting date, except in limited circumstances.
	For the years ended December 31, 2013, 2012 and 2011, the Company recognized $20.8 million, $12.3 million and $12.6 million, respectively, of stock-based compensation expense related to restricted stock. For the twelve months ended December 31, 2013, 2012 and 2011, the Company recorded $4.0 million, $0.3 million and $0.5 million, respectively, to recognize accelerated stock-based compensation. The accelerated stock-based compensation expense, in 2013, is primarily for certain executives due to provisions contained in their employment arrangements and, in 2012 and 2011, departures from the board of directors.
	The activity in the Company's restricted stock for the year ended December 31, 2013 was as follows:
		Number of Shares		Weighted Average
		of Restricted		Grant-Date Fair
		Stock		Value
	Unvested restricted stock at January 1, 2013	835,823		$	28.92
	Granted	474,152		35.35
	Vested	(590,422	)	41.31
	Forfeited	(11,332	)	29.25
	Unvested restricted stock at December 31, 2013	708,221		$	33.41
	As of December 31, 2013, the Company had unrecognized stock-based compensation expense of $12.8 million related to outstanding restricted stock. The remaining unrecognized stock-based compensation is expected to be recognized over a weighted average period of 1.4 years. The Company is projecting a forfeiture rate in the range of 2% to 5%. The total fair value of shares vested during the year ended December 31, 2013 was $24.4 million.

Net_Income_per_Common_Share

Net Income per Common Share	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share [Text Block]	'
	NET INCOME PER COMMON SHARE
	The unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents, whether paid or unpaid, are participating securities and shall be included in the computation of net income per common share pursuant to the two-class method. All restricted stock awards granted to officers, directors and employees qualify as participating securities.
	The Company computes net income per common share using the two-class method, which is an allocation formula that determines the net income for common shares and participating securities. Under the authoritative guidance, the presentation of basic and diluted earnings per share is required for each class of common stock and not for participating securities. As such, the Company will present basic and diluted net income per share for its one class of common stock.
	The computation of basic net income allocated to common stockholders is calculated by reducing net income for the period by dividends paid or declared and undistributed net income for the period that are allocated to the participating securities to arrive at net income allocated to common stockholders. Net income allocated to common stockholders is divided by the weighted average number of common shares outstanding during the period.
	The dilutive effect of participating securities is calculated using the more dilutive of the treasury stock or the two-class method. Diluted net income per common share is calculated by dividing net income allocated to common stockholders by the sum of the weighted average number of common shares outstanding plus all additional common shares that would have been outstanding if the potentially dilutive common shares had been issued.
	The following table reconciles net income applicable to common stockholders and the number of shares used to calculate the basic and diluted net income per common share for the for the years ended December 31, 2013, 2012 and 2011:
	(in thousands, except per share amounts)	2013			2012			2011
	Basic EPS Numerator:
	Net Income	$	175,999		$	157,395		$	139,406
	Less: Earnings allocated to participating securities	(2,136		)	(2,141		)	(2,824		)
	Net Income allocated to common stockholders	$	173,863		$	155,254		$	136,582
	Basic EPS Denominator:
	Weighted average shares outstanding	87,331			87,460			89,994
	Basic net income per common share	$	1.99		$	1.78		$	1.52
	Diluted EPS Numerator:
	Net Income	$	175,999		$	157,395		$	139,406
	Less: Earnings allocated to participating securities	(2,136		)	(2,141		)	(2,824		)
	Net Income allocated to common stockholders	$	173,863		$	155,254		$	136,582
	Diluted EPS Denominator:
	Weighted average shares outstanding	87,331			87,460			89,994
	Dilutive common shares issued under restricted stock program	—			—			—
	Diluted net income per common share	$	1.99		$	1.78		$	1.52
	For the year ended December 31, 2013, 708,221 shares of restricted stock were not included in the computation of diluted net income per common share because to do so would have an antidilutive effect.

Quarterly_Data

Quarterly Data	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Quarterly Financial Information [Text Block]	'
	QUARTERLY DATA (unaudited)
	Year ended December 31, 2013 (in thousands)	First		Second		Third		Fourth		Year
		Quarter		Quarter		Quarter		Quarter
	Operating revenues	$	142,705	$	150,772	$	136,743	$	141,830	$	572,050
	Operating expenses	73,275		75,414		68,316		69,231		286,236
	Operating income	69,430		75,358		68,427		72,599		285,814
	Net income	$	42,373	$	46,161	$	41,356	$	46,110	$	175,999
	Net income allocated to common stockholders	$	41,789	$	45,477	$	40,955	$	45,643	$	173,863
	Diluted—net income per share to common stockholders	$	0.48	$	0.52	$	0.47	$	0.52	$	1.99
	Year ended December 31, 2012 (in thousands)	First		Second		Third		Fourth		Year
		Quarter		Quarter		Quarter		Quarter
	Operating revenues	$	121,392	$	132,549	$	128,319	$	130,078	$	512,338
	Operating expenses	63,977		66,480		67,458		70,326		268,241
	Operating income	57,415		66,069		60,861		59,752		244,097
	Net income	$	33,417	$	38,496	$	45,758	$	39,724	$	157,395
	Net income allocated to common stockholders	$	32,863	$	37,903	$	45,243	$	39,245	$	155,254
	Diluted—net income per share to common stockholders	$	0.37	$	0.44	$	0.52	$	0.45	$	1.78
	•	In the first quarter of 2013, the Company recorded accelerated stock-based compensation expense of $3.2 million for certain executives due to provisions contained in their employment arrangements.
	•	In the second quarter of 2013, the Company recorded $1.0 million of expense for an estimated liability related to an SEC investigation of CBOE's compliance with its obligations as a self-regulatory organization under the federal securities laws.
	•	In the second quarter of 2013, the Company recorded grants to the Chief Executive Officer and President and Chief Operating Officer totaling $2.5 million, of which 50% vested upon grant. In addition, the Company recorded accelerated stock-based compensation of $0.8 million to recognize the remaining value of stock grants awarded to employees in its regulatory division who will no longer receive stock-based compensation.
	•	In the third quarter of 2012, the Company filed an amended return for 2008 and completed its return for 2011 and recognized, as a discrete item, a $7.6 million benefit for a Section 199 deduction for U.S. production activities which encompasses all personal property including computer software for those years.
	•	In the fourth quarter of 2012, the Company recorded $5.0 million of expense for an estimated liability related to an SEC investigation of CBOE's compliance with its obligations as a self-regulatory organization under the federal securities laws.
	•	In the fourth quarter of 2012, the Company filed amended returns for 2009 and 2010 and recognized, as a discrete item, a $5.3 million benefit for a Section 199 deduction for U.S. production activities which encompasses all personal property including computer software for those years.

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
Subsequent Events [Text Block]	'
	SUBSEQUENT EVENTS
	On February 5, 2014, the Company's board of directors declared a quarterly cash dividend of $0.18 per share. The dividend is payable on March 21, 2014 to stockholders of record at the close of business on February 28, 2014.
	On February 19, 2014, the Company granted 253,662 shares, consisting of restricted stock and restricted stock units, to certain officers and employees at a fair value of $55.35 per share, the closing price of the Company's stock on the grant date. The shares have a three year vesting period based on achievement of certain service, performance and/or market conditions and vesting accelerates upon the occurrence of a change in control of the Company or in the event of earlier death, disability or qualified retirement. In the first quarter of 2014, the Company will record accelerated stock-based compensation expense of approximately $2.5 million resulting from grants to certain executives due to provisions contained in their employment arrangements.

Summary_of_Significant_Account1

Summary of Significant Accounting (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	'
	Nature of Business—CBOE Holdings, Inc. ("CBOE Holdings" or the "Company") is the holding company of registered securities exchanges, subject to oversight by the Securities and Exchange Commission ("SEC"), and a designated contract market under the jurisdiction of the Commodity Futures Trading Commission ("CFTC"). Our principal business is providing a marketplace for the trading of equity options, ETP options and index options and futures contracts.
Consolidation, Policy [Policy Text Block]	'
	Basis of Presentation—The consolidated financial statements include the accounts and results of operations of CBOE Holdings and its wholly-owned subsidiaries, including: Chicago Board Options Exchange, Incorporated ("CBOE"), CBOE Futures Exchange, LLC ("CFE"), C2 Options Exchange, Incorporated ("C2"), Market Data Express, LLC, Chicago Options Exchange Building Corporation and DerivaTech Corporation. Inter-company balances and transactions have been eliminated in consolidation. The Company reports the results of its operations in one reporting segment.
Use of Estimates, Policy [Policy Text Block]	'
	Use of Estimates—The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities and reported amounts of revenues and expenses. On an ongoing basis, management evaluates its estimates based upon historical experience, observance of trends, information available from outside sources and various other assumptions that are believed to be reasonable under the circumstances. Actual results may differ from these estimates under different conditions or assumptions.
Cash and Cash Equivalents, Policy [Policy Text Block]	'
	Cash and Cash Equivalents—Cash and cash equivalents include highly liquid investments with maturities of three months or less from the date of purchase. The Company's places its cash and cash equivalents with highly-rated financial institutions, limits the amount of credit exposure with any one financial institution and conducts ongoing evaluations of the creditworthiness of the financial institutions with which it does business; therefore concentrations of credit risk are limited. There are no redemption restrictions on the Company's invested cash balances.
Receivables, Policy [Policy Text Block]	'
	Accounts Receivable—Accounts receivable consists primarily of transaction and regulatory fees from the Options Clearing Corporation, OCC and the Company's share of distributable revenue receivable from OPRA. Accounts receivable are primarily collected through OCC, and are with large, highly-rated clearing firms; therefore concentrations of credit risk are limited. The Company has no financing related receivables.
Maintenance Cost, Policy [Policy Text Block]	'
	Prepaid expenses—Prepaid expenses primarily consist of prepaid software maintenance and licensing expenses which are amortized over the respective periods.
Investments in and Advances to Affiliates [Table Text Block]	'
	Investments in Affiliates—Investments in affiliates represent investments in OCC, Signal Trading Systems, LLC ("Signal Trading"), IPXI Holdings, LLC ("IPXI") and CBOE Stock Exchange, LLC ("CBSX").
	The investments in OCC and IPXI are accounted for under the cost-method of accounting for investments.
	The investment in Signal Trading is accounted for under the equity method.
	The investment in CBSX is accounted for under the equity method.
	Investments in affiliates are periodically reviewed to determine whether any events or changes in circumstances indicate that the investments may be other than temporarily impaired. In the event of impairment, the Company would recognize a loss for the difference between the carrying amount and the estimated fair value of the investment.
Property, Plant and Equipment, Policy [Policy Text Block]	'
	Property and Equipment—Property and equipment are carried at cost, net of accumulated depreciation. Depreciation is calculated using the straight-line method, generally over five to forty years. Leasehold improvements are amortized over the lesser of their estimated useful lives or the remaining term of the applicable leases.
Property and Equipment Construction In Progress [Policy Text Block]	'
	Property and Equipment—Construction in Progress is capitalized and carried at cost. Upon completion, the projects are placed in service and amortized over the appropriate useful lives, using the straight-line method commencing with the date the asset is placed in service.
Internal Use Software, Policy [Policy Text Block]	'
	Software Development Work in Progress and Data Processing Software and Other Assets — The Company expenses software development costs as incurred during the preliminary project stage, while capitalizing costs incurred during the application development stage, which includes design, coding, installation and testing activities. Estimated useful lives are three to five years for internally developed and other data processing software and generally are five years or less for other assets.
Pension and Other Postretirement Plans, Nonpension Benefits, Policy [Policy Text Block]	'
	Employee Benefit Plans—The funded status of a post retirement benefit plan is recognized in the Consolidated Balance Sheet and changes in that funded status are recognized in the year of change in other comprehensive income (loss). Plan assets and obligations are measured at year end. The Company recognizes changes in actuarial gains and losses and prior service costs in the year in which the changes occur through accumulated other comprehensive loss.
Commitments and Contingencies, Policy [Policy Text Block]	'
	Commitments and Contingencies—Litigation—The Company accrues loss contingencies when the loss is both probable and estimable. All legal costs incurred in connection with loss contingencies are expensed as service is provided.
Revenue Recognition, Policy [Policy Text Block]	'
	Revenue Recognition—Revenue recognition policies for specific sources of revenue are discussed below:
	Transaction Fees:    Transaction fees are a function of three variables: (1) exchange fee rates; (2) trading volume; and (3) transaction mix between contract type. Transaction fees are assessed on a per contract basis and are considered earned upon the execution of a trade and are recognized on a trade date basis. Transaction fees are presented net of applicable volume discounts. In the event liquidity providers prepay for transaction fees, revenue is recognized based on the attainment of volume thresholds resulting in the amortization of the prepayment over the calendar year.
	Access Fees:    Access fees represent fees assessed to Trading Permit Holders for the opportunity to trade and use other related functions of CBOE, C2 and CFE. Access fees are recognized during the period the service is provided.
	Exchange Services and Other Fees:  Exchange services and other fees include system services, trading floor charges and application revenue. Exchange services and other fees are recognized during the period the service is provided.
	Market Data Fees:    Market data fees include Options Price Reporting Authority ("OPRA") income and Company market data services. OPRA is a limited liability company consisting of representatives of the member exchanges and is authorized by the SEC to provide consolidated options information. The Company's market data services are provided through CBOE Streaming Markets ("CSM") and other services. OPRA income is allocated based upon the individual exchange's relative volume of total cleared options transactions. The Company receives monthly estimates of OPRA's distributable revenue (See Note 4) and income is distributed on a quarterly basis. Company market data fees represent charges for current and historical options and futures data. Market data services are recognized in the period the data is provided.
	Regulatory Fees:   Regulatory fees are primarily based on the number of customer contracts traded on all U.S. options exchanges by Trading Permit Holders and are recognized on a trade-date basis. Under the rules of each of our options exchanges, as required by the SEC, any revenue derived from regulatory fees and fines cannot be used for non-regulatory purposes.
	Concentration of Revenue: At December 31, 2013, there were one hundred four CBOE clearing firms, two of which cleared a combined 48% of our billings collected through the OCC in 2013. The next largest clearing firm accounted for approximately 6% of our billings collected through the OCC. No one Trading Permit Holder using the clearing services of the top two clearing firms represented more than 39% of the revenue collected through the OCC in 2013 or 2012 for the respective clearing firm. Should a clearing firm withdraw from CBOE, we believe the Trading Permit Holder portion of that firm's trading activity would likely transfer to another clearing firm.
	The two largest clearing firms mentioned above clear the majority of the market-maker sides of transactions at CBOE, C2 and at all of the U.S. options exchanges. If either of these firms were to withdraw from the business of market-maker clearing, and market-makers were unable to transfer to another firm, this could create significant disruption to the U.S. options markets, including ours.
Advertising Costs, Policy [Policy Text Block]	'
	Advertising Costs—Advertising costs, including print advertising and production costs, product promotion campaigns and seminar, conference convention costs and, in prior years, sponsorships with local professional sports organizations, related to trade shows and other industry events, are expensed as incurred or amortized over the respective period. The Company incurred advertising costs of $5.4 million, $5.3 million and $5.5 million for the years ended December 31, 2013, 2012 and 2011, respectively. Advertising costs are included in travel and promotional expenses in the consolidated statements of income
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	'
	Stock-Based Compensation—Stock-based compensation is based on the fair value of the award on the grant date and recognized over the related service period, net of estimated forfeitures.
Income Tax, Policy [Policy Text Block]	'
	Income Taxes—Deferred income taxes arise from temporary differences between the tax basis and book basis of assets and liabilities. A valuation allowance is recognized if it is anticipated that some or all of a deferred tax asset may not be realized.
	The Company accounts for uncertainty in income taxes recognized in its consolidated financial statements by using a more-likely-than-not recognition threshold based solely on the technical merits of the position taken or expected to be taken. Interest and penalties are recorded within the provision for income taxes in the Company's consolidated statements of income and are classified on the consolidated balance sheets with the related liability for unrecognized tax benefits. See Note 9 for further discussion of the Company's income taxes.

Investment_in_Affiliates_Table

Investment in Affiliates (Tables)	12 Months Ended
	Dec. 31, 2013
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]	'
Investments in and Advances to Affiliates [Table Text Block]	'
	At December 31, 2013 and 2012, the Company's investment in affiliates was comprised of the following (in thousands):
		2013		2012
	Investment in OCC	$	333	$	333
	Investment in Signal Trading	11,130		11,437
	Investment in IPXI	3,118		2,500
	Investment in CBSX	—		—
	Investment in Affiliates	$	14,581	$	14,270

Accounts_Payable_and_Accrued_L

Accounts Payable and Accrued Liabilites (Tables)	12 Months Ended
	Dec. 31, 2013
Accounts Payable and Accrued Liabilities, Current [Abstract]	'
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]	'
	At December 31, 2013 and 2012, accounts payable and accrued liabilities consisted of the following (in thousands):
		2013		2012
	Compensation and benefit related liabilities	$	22,193	$	18,306
	Royalties	13,512		10,529
	Accounts payable	4,219		735
	Facilities	1,824		1,932
	Legal	1,602		1,706
	Linkage	1,157		1,116
	Liability related to SEC matter	—		5,000
	Other	8,451		5,824
	Total	$	52,958	$	45,148

Deferred_Revenue_Tables

Deferred Revenue (Tables)	12 Months Ended
	Dec. 31, 2013
Deferred Revenue [Abstract]	'
Deferred Revenue, by Arrangement, Disclosure [Table Text Block]	'
	The following tables summarize the activity in deferred revenue for the years ended December 31, 2013 and 2012.
	(in thousands)	Balance at		Cash		Revenue			Balance at
		December 31,		Additions		Recognition			December 31,
		2012							2013
	Liquidity provider sliding scale	$	—	$	29,232	$	(29,232	)	$	—
	Other, net	1,084		7,348		(7,332		)	1,100
	Total deferred revenue	$	1,084	$	36,580	$	(36,564	)	$	1,100
	(in thousands)	Balance at		Cash		Revenue			Balance at
		December 31,		Additions		Recognition			December 31,
		2011							2012
	Liquidity provider sliding scale	—		$	29,759	$	(29,759	)	$	—
	Other, net	351		4,940		(4,207		)	1,084
	Total deferred revenue	$	351	$	34,699	$	(33,966	)	$	1,084

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	'
	A reconciliation of the statutory federal income tax rate to the effective income tax rate for the years ended December 31, 2013, 2012 and 2011 is as follows:
		2013			2012			2011
	Statutory federal income tax rate	35	%		35	%		35	%
	State income tax rate, net of federal income tax effect	3.6			4.8			5.5
	Section 199 deductions	(2.1	)		(7.5	)		—
	Other, net	1.5			2.8			1.4
	Effective income tax rate	38	%		35.1	%		41.9	%
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	'
	The components of income tax expense for the years ended December 31, 2013, 2012 and 2011 are as follows (in thousands):
		2013				2012				2011
	Current:
	Federal	$	93,844			$	65,054			$	76,637
	State	20,958				20,597				23,101
	Total current	114,802				85,651				99,738
	Deferred:
	Federal	(4,636		)		406				(48		)
	State	(2,509		)		(901		)		988
	Total deferred	(7,145		)		(495		)		940
	Total	$	107,657			$	85,156			$	100,678
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	'
	At December 31, 2013 and 2012, the net deferred income tax liability (in thousands):
		2013				2012
	Deferred tax assets	$	25,144			$	22,935
	Deferred tax liabilities	(38,889		)		(43,924		)
	Net deferred income tax liability	$	(13,745	)		$	(20,989	)
	The tax effect of temporary differences giving rise to significant portions of deferred tax assets and liabilities at December 31, 2013 and 2012 are presented below (in thousands):
		2013				2012
	Deferred tax assets:
	Intangibles	$	50			$	89
	Accrued compensation and benefits	11,233				9,221
	Property, equipment and technology, net	697				570
	Investment in affiliates	6,158				7,933
	Other	7,006				5,122
	Total deferred tax assets	25,144				22,935
	Deferred tax liabilities:
	Property, equipment and technology, net	(36,180		)		(36,930		)
	Investment in affiliates	(1,683		)		(1,687		)
	Prepaid	(1,027		)		(996		)
	Other	1				(4,311		)
	Total deferred tax liabilities	(38,889		)		(43,924		)
	Net deferred tax liabilities	$	(13,745	)		$	(20,989	)
Summary of Income Tax Contingencies [Table Text Block]	'
	A reconciliation of the beginning and ending uncertain tax positions, excluding interest and penalties, is as follows (in thousands):
		2013				2012				2011
	Balance as of January 1	$	19,493			$	12,185			$	3,165
	Gross increases on tax positions in prior period	549				3,401				9,186
	Gross decreases on tax positions in prior period	(18		)		(833		)		(2,215		)
	Gross increases on tax positions in current period	7,270				4,740				2,768
	Lapse of statue of limitations	(549		)		—				(719		)
	Balance as of December 31	$	26,745			$	19,493			$	12,185

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value, Measurement Inputs, Disclosure [Table Text Block]	'
	The Company has included a tabular disclosure for financial assets that are measured at fair value on a recurring basis in the consolidated balance sheet as of December 31, 2013 and 2012. The Company holds no financial liabilities that are measured at fair value on a recurring basis.
	(amounts in thousands)	Level 1		Level 2		Level 3		Total
	Assets at fair value:
	Money market funds	$	207,000	—		—		$	207,000
	Total assets at fair value at December 31, 2013	$	207,000	$	—	$	—	$	207,000
	(amounts in thousands)	Level 1		Level 2		Level 3		Total
	Assets at fair value:
	Money market funds	126,000		—		—		126,000
	Total assets at fair value at December 31, 2012	$	126,000	$	—	$	—	$	126,000

Commitments_and_Contigencies_C

Commitments and Contigencies Commitments and Contigencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	'
	Future minimum payments under these non-cancelable leases are as follows at December 31, 2013 (in thousands):
	Year	Operating		Total
		Leases
	2014	$	2,562	$	2,562
	2015	2,348		2,348
	2016	2,298		2,298
	2017	1,117		1,117
	2018	550		550
	Total	$	8,875	$	8,875

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation [Abstract]	'
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	'
	The activity in the Company's restricted stock for the year ended December 31, 2013 was as follows:
		Number of Shares		Weighted Average
		of Restricted		Grant-Date Fair
		Stock		Value
	Unvested restricted stock at January 1, 2013	835,823		$	28.92
	Granted	474,152		35.35
	Vested	(590,422	)	41.31
	Forfeited	(11,332	)	29.25
	Unvested restricted stock at December 31, 2013	708,221		$	33.41

Net_Income_per_Common_Share_Ta

Net Income per Common Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	'
	The following table reconciles net income applicable to common stockholders and the number of shares used to calculate the basic and diluted net income per common share for the for the years ended December 31, 2013, 2012 and 2011:
	(in thousands, except per share amounts)	2013			2012			2011
	Basic EPS Numerator:
	Net Income	$	175,999		$	157,395		$	139,406
	Less: Earnings allocated to participating securities	(2,136		)	(2,141		)	(2,824		)
	Net Income allocated to common stockholders	$	173,863		$	155,254		$	136,582
	Basic EPS Denominator:
	Weighted average shares outstanding	87,331			87,460			89,994
	Basic net income per common share	$	1.99		$	1.78		$	1.52
	Diluted EPS Numerator:
	Net Income	$	175,999		$	157,395		$	139,406
	Less: Earnings allocated to participating securities	(2,136		)	(2,141		)	(2,824		)
	Net Income allocated to common stockholders	$	173,863		$	155,254		$	136,582
	Diluted EPS Denominator:
	Weighted average shares outstanding	87,331			87,460			89,994
	Dilutive common shares issued under restricted stock program	—			—			—
	Diluted net income per common share	$	1.99		$	1.78		$	1.52

Quarterly_Data_Tables

Quarterly Data (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Schedule of Quarterly Financial Information [Table Text Block]	'
	QUARTERLY DATA (unaudited)
	Year ended December 31, 2013 (in thousands)	First		Second		Third		Fourth		Year
		Quarter		Quarter		Quarter		Quarter
	Operating revenues	$	142,705	$	150,772	$	136,743	$	141,830	$	572,050
	Operating expenses	73,275		75,414		68,316		69,231		286,236
	Operating income	69,430		75,358		68,427		72,599		285,814
	Net income	$	42,373	$	46,161	$	41,356	$	46,110	$	175,999
	Net income allocated to common stockholders	$	41,789	$	45,477	$	40,955	$	45,643	$	173,863
	Diluted—net income per share to common stockholders	$	0.48	$	0.52	$	0.47	$	0.52	$	1.99
	Year ended December 31, 2012 (in thousands)	First		Second		Third		Fourth		Year
		Quarter		Quarter		Quarter		Quarter
	Operating revenues	$	121,392	$	132,549	$	128,319	$	130,078	$	512,338
	Operating expenses	63,977		66,480		67,458		70,326		268,241
	Operating income	57,415		66,069		60,861		59,752		244,097
	Net income	$	33,417	$	38,496	$	45,758	$	39,724	$	157,395
	Net income allocated to common stockholders	$	32,863	$	37,903	$	45,243	$	39,245	$	155,254
	Diluted—net income per share to common stockholders	$	0.37	$	0.44	$	0.52	$	0.45	$	1.78

Summary_of_Significant_Account2

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Concentration Risk, Customer	'0.3869	'	'
Advertising Expense	$5.40	$5.30	$5.50
Property, Plant and Equipment, Useful Life	'5 years	'	'
Minimum [Member]	'	'	'
Concentration Risk, Customer	'0.060746323	'	'
Property, Plant and Equipment, Estimated Useful Lives	'P5Y	'	'
Property, Plant and Equipment, Useful Life	'3 years	'	'
Maximum [Member]	'	'	'
Concentration Risk, Customer	'0.4825	'	'
Property, Plant and Equipment, Estimated Useful Lives	'P40Y	'	'
Property, Plant and Equipment, Useful Life	'5 years	'	'

Share_Repurchase_Program_Detai

Share Repurchase Program (Details) (USD $)	0 Months Ended	1 Months Ended		12 Months Ended			29 Months Ended
	Dec. 11, 2013	Jul. 31, 2012	Aug. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013
Stock Repurchase Program, Authorized Amount	$100,000,000	$100,000,000	$100,000,000	'	'	'	'
Treasury Stock, Shares, Acquired	'	'	'	932,400	'	'	4,639,824
Treasury Stock Acquired, Cost Per Share	'	'	'	$30.61	'	'	$30.61
Treasury Stock, Value, Acquired, Cost Method	'	'	'	-51,426,000	-52,872,000	-51,329,000	'
Treasury Stock Acquired, Average Cost Per Share	'	'	'	$48.57	'	'	'
Stock Repurchase Program, Total Acquired	'	'	'	142,000,000	'	'	142,000,000
Treasury Stock	'	'	'	'	'	'	'
Treasury Stock, Value, Acquired, Cost Method	'	'	'	$45,300,000	'	'	'

Investment_in_Affiliates_Detai

Investment in Affiliates (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investments in and Advances to Affiliates [Line Items]	'	'	'
Equity Gain Loss Investments	($1,976)	($1,695)	($352)
Investments in and Advances to Affiliates, Balance, Principal Amount	14,581	14,270	'
Due to Affiliate, Current	0	0	1,250
Cost Method Investment, Ownership Percentage, Other	10.00%	'	'
Investment in OCC [Member]	'	'	'
Investments in and Advances to Affiliates [Line Items]	'	'	'
Investments in and Advances to Affiliates, Balance, Principal Amount	333	333	'
Cost Method Investment, Ownership Percentage	20.00%	'	'
Investment in IPXI [Member]	'	'	'
Investments in and Advances to Affiliates [Line Items]	'	'	'
Payments for (Proceeds from) Investments	612	1,250	1,250
Investments in and Advances to Affiliates, Balance, Principal Amount	3,118	2,500	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	600	'	'
investment in CBSX [Member]	'	'	'
Investments in and Advances to Affiliates [Line Items]	'	'	'
Equity Method Investment, Ownership Percentage	49.96%	'	'
Investments in and Advances to Affiliates, Balance, Principal Amount	0	0	'
Investment in Signal Trading [Member]	'	'	'
Investments in and Advances to Affiliates [Line Items]	'	'	'
Equity Method Investment, Ownership Percentage	50.00%	'	'
Payments for (Proceeds from) Investments	1,920	1,661	'
Investments in and Advances to Affiliates, Balance, Principal Amount	11,130	11,437	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$1,695	'	'

Related_Parties_Details

Related Parties (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Transaction Fees	$397,218,000	$357,146,000	$373,065,000
Market data fees	24,911,000	24,360,000	19,906,000
OCC [Member]	'	'	'
Transaction Fees	610,300,000	544,300,000	542,800,000
Marketing fees	99,700,000	96,100,000	93,700,000
Accounts Receivable, Related Parties	48,600,000	42,300,000	'
OPTIONS PRICE REPORTING AUTHORITY [Member]	'	'	'
Accounts Receivable, Related Parties	3,900,000	3,400,000	'
Market data fees	12,900,000	15,000,000	12,900,000
CBOE STOCK EXCHANGE [Member]	'	'	'
Accounts Receivable, Related Parties	400,000	500,000	'
Costs and Expenses, Related Party	4,600,000	3,700,000	5,100,000
Options Regulatory Surveillance Authority [Member]	'	'	'
Accounts Receivable, Related Parties	1,200,000	1,400,000	'
Costs and Expenses, Related Party	$2,300,000	$2,100,000	$2,000,000

Accounts_Payable_and_Accrued_L1

Accounts Payable and Accrued Liabilities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts Payable and Accrued Liabilities, Current [Abstract]	'	'
Compensation and benefit related liabilities	$22,193	$18,306
Royalties	13,512	10,529
Accounts payable	4,219	735
Facilities	1,824	1,932
Legal	1,602	1,706
Linkage	1,157	1,116
Liability related to SEC matter	0	5,000
Other	8,451	5,824
Accounts Payable and Accrued Liabilities, Current	$52,958	$45,148

Marketing_Fee_Marketing_Fee_De

Marketing Fee Marketing Fee (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Marketing Fee [Abstract]	'	'
Marketing Fee Receivable Current	$8,869	$5,216
Marketing Fee Payable Current	$9,442	$5,808

Deferred_Revenue_Details

Deferred Revenue (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	contracts	contracts
Deferred Revenue Arrangement [Line Items]	'	'	'
Liquidity Provider Transaction Fee Sliding Scale, Monthly Contract Volume for Reduced Fees, Minimum	2,000,000	810,000	'
Increase (Decrease) in Deferred Revenue	($75,000)	$773,000	($16,000)
Deferred Revenue	1,100,000	1,084,000	351,000
Deferred Revenue, Period Increase (Decrease)	36,580,000	34,699,000	'
Liquidity Provider Cash Received [Member]	'	'	'
Deferred Revenue Arrangement [Line Items]	'	'	'
Increase (Decrease) in Deferred Revenue and Customer Advances and Deposits	29,232,000	'	'
Increase (Decrease) in Deferred Revenue and Customer Advances and Deposits	'	29,759,000	'
Liquidity Provider Revenue Recognized [Member]	'	'	'
Deferred Revenue Arrangement [Line Items]	'	'	'
Increase (Decrease) in Deferred Revenue and Customer Advances and Deposits	-29,232,000	'	'
Increase (Decrease) in Deferred Revenue and Customer Advances and Deposits	'	-29,759,000	'
Other Deferred Revenue Recognized [Member]	'	'	'
Deferred Revenue Arrangement [Line Items]	'	'	'
Increase (Decrease) in Deferred Revenue	-7,332,654	-4,207,000	'
Other Deferred Revenue Cash Received [Member]	'	'	'
Deferred Revenue Arrangement [Line Items]	'	'	'
Increase (Decrease) in Deferred Revenue	7,347,709	4,940,000	'
Other Deferred Revenue [Member]	'	'	'
Deferred Revenue Arrangement [Line Items]	'	'	'
Deferred Revenue	1,100,000	1,084,000	351,000
Other Deferred Revenue Recognized [Member]	'	'	'
Deferred Revenue Arrangement [Line Items]	'	'	'
Increase (Decrease) in Deferred Revenue	($36,564,000)	($33,966,000)	'

Employee_Benefits_Details

Employee Benefits (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Compensation and Retirement Disclosure [Abstract]	'	'	'
Defined Benefit Plan, Contributions by Employer	$4	$3.90	$4.50
Pension and Other Postretirement Benefit Contributions	$1.60	$1.40	$1.30

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]	'	'	'	'	'	'	'
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	'	'	'	35.00%	35.00%	35.00%	'
Effective Income Tax Rate Reconciliation, State and Local Income Taxes	'	'	'	3.60%	4.80%	5.50%	'
Effective Income Tax Rate Reconciliation, Deductions, Qualified Production Activities	'	'	'	-2.10%	-7.50%	0.00%	'
Effective Income Tax Rate Reconciliation, Other Adjustments	'	'	'	1.50%	2.80%	1.40%	'
Effective Income Tax Rate, Continuing Operations	'	'	'	38.00%	35.10%	41.90%	'
Income Tax Reconciliation, Deductions, Qualified Production Activities	'	$5,300,000	$7,600,000	'	$12,900,000	'	'
Current Federal Tax Expense (Benefit)	'	'	'	93,844,000	65,054,000	76,637,000	'
Current State and Local Tax Expense (Benefit)	'	'	'	20,958,000	20,597,000	23,101,000	'
Current Income Tax Expense (Benefit)	'	'	'	114,802,000	85,651,000	99,738,000	'
Deferred Federal Income Tax Expense (Benefit)	'	'	'	-4,636,000	406,000	-48,000	'
Deferred State and Local Income Tax Expense (Benefit)	'	'	'	-2,509,000	-901,000	988,000	'
Deferred Income Tax Expense (Benefit)	'	'	'	-7,145,000	-495,000	940,000	'
Income Tax Expense (Benefit)	'	'	'	107,657,000	85,156,000	100,678,000	'
Deferred Tax Assets, Net	25,144,000	22,935,000	'	25,144,000	22,935,000	'	'
Deferred Tax Liabilities, Gross	-38,889,000	-43,924,000	'	-38,889,000	-43,924,000	'	'
Deferred Tax Liabilities, Net, Noncurrent	-13,745,000	-20,989,000	'	-13,745,000	-20,989,000	'	'
Deferred Tax Assets, Goodwill and Intangible Assets	50,000	89,000	'	50,000	89,000	'	'
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	11,233,000	9,221,000	'	11,233,000	9,221,000	'	'
Deferred Tax Assets, Depreciation	697,000	570,000	'	697,000	570,000	'	'
Deferred Tax Assets, Investment in Noncontrolled Affiliaties	6,158,000	7,933,000	'	6,158,000	7,933,000	'	'
Deferred Tax Assets, Other	7,006,000	5,122,000	'	7,006,000	5,122,000	'	'
Deferred Tax Liabilities, Property, Plant and Equipment	-36,180,000	-36,930,000	'	-36,180,000	-36,930,000	'	'
Deferred Tax Liabilities, Investment in Noncontrolled Affiliates	-1,683,000	-1,687,000	'	-1,683,000	-1,687,000	'	'
Deferred Tax Liabilities, Prepaid Expenses	-1,027,000	-996,000	'	-1,027,000	-996,000	'	'
Deferred Tax Liabilities, Other	1,000	-4,311,000	'	1,000	-4,311,000	'	'
Unrecognized Tax Benefits	26,745,000	19,493,000	'	26,745,000	19,493,000	12,185,000	3,165,000
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	'	'	'	549,000	3,401,000	9,186,000	'
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions	'	'	'	-18,000	-833,000	-2,215,000	'
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	'	'	'	7,270,000	4,740,000	2,768,000	'
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	6,600,000	'	'	-549,000	0	-719,000	'
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	26,700,000	19,500,000	'	26,700,000	19,500,000	11,400,000	'
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	'	'	'	1,800,000	600,000	100,000	'
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$3,200,000	$1,400,000	'	$3,200,000	$1,400,000	$800,000	'

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Money Market Funds, at Carrying Value	$207,000,000	$126,000,000
Assets, Fair Value Disclosure	207,000,000	126,000,000
Cost Method Investment, Ownership Percentage, Other	10.00%	'
Investments in and Advances to Affiliates, Balance, Principal Amount	14,581,000	14,270,000
Investment in IPXI [Member]	'	'
Investments in and Advances to Affiliates, Balance, Principal Amount	3,118,000	2,500,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$600,000	'

Commitments_and_Contigencies_D

Commitments and Contigencies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Licensing Agreements Due Next Five Years	$12,200,000	'	'
Operating Leases, Rent Expense	3,000,000	3,500,000	3,200,000
Operating Leases, Future Minimum Payments Due, Current	2,562,000	'	'
Total Operating Leases and Advertising Obligations, Current	2,562,000	'	'
Operating Leases, Future Minimum Payments, Due in Two Years	2,348,000	'	'
Total Operating Leases and Advertising Obligations, due in two years	2,348,000	'	'
Operating Leases, Future Minimum Payments, Due in Three Years	2,298,000	'	'
Total Operating Leases and Advertising Obligations, due within three years	2,298,000	'	'
Operating Leases, Future Minimum Payments, Due in Four Years	1,117,000	'	'
Total Operating Leases and Advertising Obligations, due within four years	1,117,000	'	'
Operating Leases, Future Minimum Payments, Due in Five Years	550,000	'	'
Total Operating Leases and Advertising Obligations, due within five years	550,000	'	'
Operating Leases, Future Minimum Payments Due	8,875,000	'	'
Operating Leases and Advertising Obligations, future amounts due	$8,875,000	'	'
Minimum [Member]	'	'	'
Lessee Leasing Arrangements, Operating Leases, Term of Contract	'5 months	'	'
Maximum [Member]	'	'	'
Lessee Leasing Arrangements, Operating Leases, Term of Contract	'136 months	'	'

StockBased_Compensation_Detail

Stock-Based Compensation (Details) (USD $)	0 Months Ended			3 Months Ended		12 Months Ended
	Feb. 19, 2014	24-May-13	Feb. 07, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	'	'	'	'	'	4,248,497	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$55.35	$40.54	$34.23	'	'	$35.35	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	'	50.00%	'	'	'	'	'	'
Share-based Compensation	'	'	'	'	'	$20,823,000	$12,348,000	$12,618,000
Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost	2,500,000	'	'	800,000	3,200,000	4,000,000	300,000	500,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	'	'	'	'	'	708,221	835,823	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	'	'	'	'	'	$33.41	$28.92	'
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures	253,662	83,880	390,272	'	'	474,152	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	'	'	'	'	'	-590,422	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	'	'	'	'	'	$41.31	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	'	'	'	'	'	-11,332	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price	'	'	'	'	'	$29.25	'	'
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	'	'	'	'	'	12,800,000	'	'
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	'	'	'	'	'	'1 year 4 months 24 days	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	'	$2,500,000	'	'	'	$24,388,000	'	'
BOD [Member]	'	'	'	'	'	'	'	'
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures	'	22,212	'	'	'	'	'	'
CEO COO [Member]	'	'	'	'	'	'	'	'
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures	'	61,668	'	'	'	'	'	'
Minimum [Member]	'	'	'	'	'	'	'	'
Share Based Conpensation,Forfeiture Rate	'	'	'	'	'	2.00%	'	'
Maximum [Member]	'	'	'	'	'	'	'	'
Share Based Conpensation,Forfeiture Rate	'	'	'	'	'	5.00%	'	'

Net_Income_per_Common_Share_De

Net Income per Common Share (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Net Income (Loss) Attributable to Parent	'	'	'	'	'	'	'	'	$175,999	$157,395	$139,406
Less: Earnings allocated to participating securities	'	'	'	'	'	'	'	'	-2,136	-2,141	-2,824
Net Income (Loss) Available to Common Stockholders, Basic	'	'	'	'	'	'	'	'	173,863	155,254	136,582
Weighted Average Number of Shares Outstanding, Basic	'	'	'	'	'	'	'	'	87,331,000	87,460,000	89,994,000
Basic (in dollars per share)	'	'	'	'	'	'	'	'	$1.99	$1.78	$1.52
Net Income (Loss) Available to Common Stockholders, Diluted	$45,643	$40,955	$45,477	$41,789	$39,245	$45,243	$37,903	$32,863	$173,863	$155,254	$136,582
Weighted Average Number of Shares Outstanding, Diluted	'	'	'	'	'	'	'	'	87,331,000	87,460,000	89,994,000
Diluted—net income per share to common stockholders	$0.52	$0.47	$0.52	$0.48	$0.45	$0.52	$0.44	$0.37	$1.99	$1.78	$1.52
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	'	'	'	'	'	'	'	'	708,221	'	'

Quarterly_Data_Quarterly_Data_

Quarterly Data Quarterly Data (Details) (USD $)	0 Months Ended		3 Months Ended								12 Months Ended
	Feb. 19, 2014	24-May-13	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]	'	'	'	'	'	'	'	'	'	'	'	'	'
Operating revenues	'	'	$141,830,000	$136,743,000	$150,772,000	$142,705,000	$130,078,000	$128,319,000	$132,549,000	$121,392,000	$572,050,000	$512,338,000	$508,144,000
Operating expenses	'	'	69,231,000	68,316,000	75,414,000	73,275,000	70,326,000	67,458,000	66,480,000	63,977,000	286,236,000	268,241,000	266,512,000
Operating income	'	'	72,599,000	68,427,000	75,358,000	69,430,000	59,752,000	60,861,000	66,069,000	57,415,000	285,814,000	244,097,000	241,632,000
Net income	'	'	46,110,000	41,356,000	46,161,000	42,373,000	39,724,000	45,758,000	38,496,000	33,417,000	175,999,000	157,395,000	139,406,000
Net income allocated to common stockholders	'	'	45,643,000	40,955,000	45,477,000	41,789,000	39,245,000	45,243,000	37,903,000	32,863,000	173,863,000	155,254,000	136,582,000
Diluted—net income per share to common stockholders	'	'	$0.52	$0.47	$0.52	$0.48	$0.45	$0.52	$0.44	$0.37	$1.99	$1.78	$1.52
Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost	2,500,000	'	'	'	800,000	3,200,000	'	'	'	'	4,000,000	300,000	500,000
Loss Contingency Accrual, at Carrying Value	'	'	'	'	1,000,000	'	5,000,000	'	'	'	'	5,000,000	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	'	2,500,000	'	'	'	'	'	'	'	'	24,388,000	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	'	50.00%	'	'	'	'	'	'	'	'	'	'	'
Income Tax Reconciliation, Deductions, Qualified Production Activities	'	'	'	'	'	'	$5,300,000	$7,600,000	'	'	'	$12,900,000	'

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	0 Months Ended			3 Months Ended		12 Months Ended
In Millions, except Share data, unless otherwise specified	Feb. 19, 2014	24-May-13	Feb. 07, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Feb. 05, 2014
Subsequent Events [Abstract]	'	'	'	'	'	'	'	'	'
Declared Dividends Per Share	'	'	'	'	'	'	'	'	$0.18
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	253,662	83,880	390,272	'	'	474,152	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$55.35	$40.54	$34.23	'	'	$35.35	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost	$2.50	'	'	$0.80	$3.20	$4	$0.30	$0.50	'