CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities
Net income	$ 815.9	$ 699.7	$ 578.0
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	93.4	93.5	79.2
Stock-based compensation expense	67.1	64.5	56.7
Goodwill impairment charge	0	12.2	0
Deferred income taxes	(27.2)	36.1	10.3
Excess tax benefits from settlement of stock-based compensation awards	(38.8)	(15.7)	(7.4)
Legacy Tax Matters	(19.2)	(12.8)	(6.4)
Changes in assets and liabilities:
Accounts receivable	(67.0)	(128.2)	17.1
Other current assets	(21.7)	(14.1)	53.5
Other assets	0.7	(5.1)	(7.5)
Accounts payable and accrued liabilities	(2.9)	101.7	23.9
Deferred revenue	66.1	20.9	8.8
Unrecognized tax benefits and other non-current tax liabilities	30.9	(49.2)	3.9
Other liabilities	30.9	9.4	(21.8)
Net cash provided by operating activities	926.8	823.1	803.3
Cash flows from investing activities
Capital additions	(42.3)	(45.0)	(67.7)
Purchases of short-term investments	(225.9)	(56.2)	(43.3)
Sales and maturities of short-term investments	57.0	54.5	40.9
Cash paid for acquisitions and investment in affiliates, net of cash acquired	(50.7)	(3.5)	(197.5)
Net cash used in investing activities	(261.9)	(50.2)	(267.6)
Cash flows from financing activities
Issuance of notes	497.2	496.1	0
Repayment of notes	(63.8)	(71.3)	(11.3)
Net proceeds from stock plans	136.0	116.7	46.4
Excess tax benefits from settlement of stock-based compensation awards	38.8	15.7	7.4
Cost of treasury shares repurchased	(893.1)	(196.5)	(333.8)
Payment of dividends	(197.3)	(143.0)	(121.0)
Payment of dividends to noncontrolling interests	(12.2)	(8.3)	(5.1)
Payments under capital lease obligations	0	0	0
Contingent consideration paid	(0.3)	(0.5)	(0.3)
Debt issuance costs and related fees	(4.1)	(6.3)	0
Net cash provided by (used in) financing activities	(498.8)	202.6	(417.7)
Effect of exchange rate changes on cash and cash equivalents	(2.0)	19.9	(17.6)
Increase in cash and cash equivalents	164.1	995.4	100.4
Cash and cash equivalents, beginning of period	1,755.4	760.0	659.6
Cash and cash equivalents, end of period	$ 1,919.5	$ 1,755.4	$ 760.0