Consolidated Balance Sheets - USD ($) $ in Millions		Sep. 30, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents		$ 1,434.3	$ 1,366.1
Marketable securities		72.4	74.7
Accounts receivable, net of allowance		363.8	341.2
Other current assets		267.1	196.5
Cash performance bonds and guaranty fund contributions		49,321.2	40,566.8
Total current assets		51,458.8	42,545.3
Property, net of accumulated depreciation and amortization		496.1	508.9
Intangible assets - trading products	[1]	17,175.3	17,175.3
Intangible assets - other, net		2,562.7	2,637.4
Goodwill		7,569.0	7,569.0
Other assets		1,687.7	1,805.6
Total Assets		80,949.6	72,241.5
Liabilities and Shareholders' Equity
Accounts payable		38.1	36.9
Other current liabilities		239.5	927.5
Cash performance bonds and guaranty fund contributions		49,321.2	40,566.8
Total current liabilities		49,598.8	41,531.2
Long-term debt		2,241.2	2,107.9
Deferred income tax liabilities, net		7,341.5	7,302.7
Other liabilities		391.3	376.2
Total Liabilities		59,572.8	51,318.0
Shareholders' Equity:
Preferred stock, $0.01 par value, 10,000 shares authorized, none issued or outstanding		0.0	0.0
Additional paid-in capital		17,696.2	17,596.6
Retained earnings		3,771.8	3,317.3
Accumulated other comprehensive income (loss)		(94.6)	6.2
Total Shareholders' Equity		21,376.8	20,923.5
Total Liabilities and Shareholders' Equity		80,949.6	72,241.5
Class A Common Stock [Member]
Shareholders' Equity:
Common stock		3.4	3.4
Class B Common Stock [Member]
Shareholders' Equity:
Common stock		$ 0.0	$ 0.0

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