CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities
Net income	$ 764.6	$ 606.3
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	68.6	70.1
Stock-based compensation expense	59.9	49.3
Deferred income taxes	43.7	(13.0)
Excess tax benefits from stock-based compensation plans	(54.5)	(32.4)
ICRA Gain	(102.8)	0
Legacy Tax Matters	(6.4)	0
Changes in assets and liabilities:
Accounts receivable	(11.9)	26.8
Other current assets	(63.3)	(7.0)
Other assets	(4.8)	(6.0)
Accounts payable and accrued liabilities	(16.3)	(138.6)
Deferred revenue	25.8	25.6
Unrecognized tax benefits	18.5	44.8
Other liabilities	(11.3)	27.6
Net cash provided by operating activities	709.8	653.5
Cash flows from investing activities
Capital additions	(56.8)	(31.0)
Purchases of short-term investments	(68.0)	(215.2)
Sales and maturities of short-term investments	90.7	23.4
Net cash used in investing activities	(244.6)	(222.8)
Cash paid into escrow for ICRA share tender offer	(210.5)	0
Cash flows from financing activities
Issuance of notes	747.7	497.2
Repayments of notes	(300.0)	(63.8)
Net proceeds from stock-based compensation plans	83.3	96.6
Cost of treasury shares repurchased	(780.2)	(747.6)
Excess tax benefits from stock-based compensation plans	54.5	32.4
Payment of dividends	(178.2)	(143.7)
Payment of dividends to noncontrolling interests	(9.7)	(9.9)
Contingent consideration paid	(4.3)	(0.3)
Debt issuance costs and related fees	(6.5)	(4.1)
Net cash used in financing activities	(393.4)	(343.2)
Effect of exchange rate changes on cash and cash equivalents	(50.5)	(7.8)
Net increase in cash and cash equivalents	21.3	79.7
Cash and cash equivalents, beginning of the period	1,919.5	1,755.4
Cash and cash equivalents, end of the period	$ 1,940.8	$ 1,835.1