Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012
Cash flows from operating activities:
Net income	$ 288.0		$ 90.8
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation	180.7		186.0
Depreciation and amortization	135.1		137.9
Restructuring and other charges	28.6	[1]	88.6	[1]
Deferred income taxes	40.4		(75.1)
Gain on investments, net	(7.8)		(7.8)
Excess tax benefits from share-based compensation	(1.5)		(7.2)
Other non-cash charges	1.3		0.6
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable, net	(111.0)		180.4
Prepaid expenses and other assets	(67.0)		(54.0)
Accounts payable	(1.1)		(114.0)
Accrued compensation	(88.6)		5.6
Income taxes payable	(26.1)		64.7
Other accrued liabilities	(16.8)		(24.8)
Deferred revenue	97.7		15.9
Net cash provided by operating activities	451.9		487.6
Cash flows from investing activities:
Purchases of property and equipment	(183.0)		(256.8)
Purchases of trading investments	(3.1)		(3.8)
Purchases of available-for-sale investments	(1,351.6)		(1,009.1)
Proceeds from sales of available-for-sale investments	860.4		625.2
Proceeds from maturities of available-for-sale investments	287.6		431.7
Payments for business acquisitions, net of cash and cash equivalents acquired	(10.0)		(90.5)
Proceeds from sales of privately-held investments	8.4		32.7
Purchases of privately-held investments	(20.4)		(11.1)
Purchase of licensed software	(10.0)		(65.3)
Changes in restricted cash	0		(20.8)
Net cash used in investing activities	(421.7)		(367.8)
Cash flows from financing activities:
Proceeds from issuance of common stock	123.7		88.2
Purchases and retirement of common stock	(332.1)		(400.1)
Payment for capital lease obligation	(1.4)		(1.4)
Customer financing arrangements	41.8		(16.2)
Excess tax benefits from share-based compensation	1.5		7.2
Net cash used in financing activities	(166.5)		(322.3)
Net decrease in cash and cash equivalents	(136.3)		(202.5)
Cash and cash equivalents at beginning of period	2,407.8		2,910.4
Cash and cash equivalents at end of period	$ 2,271.5		$ 2,707.9

[1] Amount includes restructuring and other charges reported in cost of revenues and operating expenses.