Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash Flows from Operating Activities [Abstract]
Net income	$ 540.2	$ 524.4
Adjustments to reconcile net income to net cash used in operating activities [Abstract]
Depreciation	90.8	90.0
Amortization of intangible assets	47.9	43.9
Amortization of deferred gain from termination of interest rate swaps	(3.7)	0
Income from equity method investments, net of dividends received	(0.3)	1.6
Remeasurement gain, equity interest in Clemenger Group	0	(123.4)
Provision for doubtful accounts	2.3	1.7
Share-based compensation	44.4	32.9
Excess tax benefit on share-based compensation	(57.5)	(20.5)
Change in operating capital	(506.8)	(813.2)
Net Cash Provided By (Used In) Operating Activities	157.3	(262.6)
Cash Flows from Investing Activities [Abstract]
Payments to acquire property, plant and equipment	(112.8)	(81.1)
Payments to acquire businesses and interests in affiliates, net of cash acquired	(105.2)	(261.7)
Payments to acquire investments	0	(11.4)
Proceeds from sales of investments	8.9	12.2
Net Cash Used In Investing Activities	(209.1)	(342.0)
Cash Flows from Financing Activities [Abstract]
Proceeds from short-term debt	2.9	10.1
Proceeds from borrowings	746.8	0
Repayments of convertible debt	0	(0.1)
Payments of dividends	(153.5)	(129.2)
Payments for repurchase of common stock	(805.9)	(665.6)
Proceeds from stock plans	177.6	87.8
Payments for acquisition of additional noncontrolling interests	(2.6)	(15.7)
Payments of dividends to noncontrolling interests shareholders	(56.8)	(50.1)
Excess tax benefit on share-based compensation	57.5	20.5
Other, net	(21.3)	(11.8)
Net Cash Used In Financing Activities	(55.3)	(754.1)
Effect of exchange rate changes on cash and cash equivalents	(8.8)	56.3
Net Decrease in Cash and Cash Equivalents	(115.9)	(1,302.4)
Cash and Cash Equivalents at the Beginning of the Period	1,781.2	2,288.7
Cash and Cash Equivalents at the End of the Period	$ 1,665.3	$ 986.3