Condensed Consolidated Statement of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Condensed Consolidated Statement Of Cash Flows [Abstract]
Net income	$ 247.0	$ 229.2
Adjustments to reconcile net income to net cash provided by operating activities:[Abstract]
Depreciation and amortization	52.5	49.2
Deferred income taxes	14.7	16.0
Stock-based compensation	8.4	8.0
Tax benefit on stock-based awards	(6.5)	(11.7)
Changes in assets and liabilities:[Abstract]
Increase in accounts receivable, net	(87.4)	(66.8)
Increase in inventories, net	(45.1)	(29.5)
(Decrease) increase in current liabilities	26.4	(1.7)
Changes in other assets and liabilities, net	14.9	22.1
Pension contributions	(2.5)	(22.0)
Other, net	3.5	(0.8)
Net cash provided by operating activities	225.9	192.0
Cash Flows from Investing Activities [Abstract]
Capital expenditures	(40.4)	(31.3)
Acquisition of businesses, net of cash acquired	(96.5)	(53.0)
Return of escrow funds from acquisition		6.8
Purchases of available-for-sale investments	(8.4)	(2.7)
Proceeds from available-for-sale investments	7.6	11.4
Other, net	4.4	6.9
Net cash used in investing activities	(133.3)	(61.9)
Cash Flows from Financing Activities [Abstract]
Short-term debt borrowings (repayments), net	0.1	(2.7)
Payment of dividends	(79.9)	(71.3)
Payment of dividends to noncontrolling interest	(1.1)	(1.0)
Repurchase of common shares	(31.0)	(55.6)
Proceeds from exercise of stock options	1.5	21.4
Tax benefit on stock-based awards	6.5	11.7
Other, net	0	0
Net cash used in financing activities	(103.9)	(97.5)
Effect of foreign currency exchange rate changes on cash and cash equivalents	(3.3)	3.4
(Decrease) increase in cash and cash equivalents	(14.6)	36.0
Cash and cash equivalents [Abstract]
Beginning of period	645.0	569.6
End of period	$ 630.4	$ 605.6