Condensed Consolidated Statements Of Shareholders' Investment (USD $) In Thousands, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Beginning balance			$ 1,631,500	$ 2,205,900
Net income	130,100	127,500	214,200	373,400
Change in derivative instruments designated as cash flow hedges (net of taxes)			(4,100)	2,200
Foreign currency translation adjustment			41,900	(60,100)
Amortization of items included in net periodic benefit cost (net of taxes)			3,900	3,400
Total comprehensive income			255,900	318,900
Cash dividends declared in current year			(32,700)	(33,400)
Issuance of common stock			105,200	21,700
Share-based compensation			36,500	38,700
Purchase of common stock			(174,200)	(302,000)
Tax benefit relating to share-based compensation plans			26,800	7,200
Purchase of noncontrolling interest				(25,900)
Ending balance	1,849,000	2,231,100	1,849,000	2,231,100
Common Stock [Member]
Beginning balance			21,300	24,000
Beginning balance (in shares)			84,973,586	95,917,095
Issuance of common stock			500	100
Issuance of common stock (in shares)			2,091,841	698,250
Purchase of common stock			(300)	(900)
Purchase of common stock (in shares)			(1,283,000)	(3,712,700)
Ending balance	21,500	23,200	21,500	23,200
Ending balance (in shares)	85,782,427	92,902,645	85,782,427	92,902,645
Capital In Excess Of Par Value [Member]
Beginning balance			1,146,400	1,060,900
Issuance of common stock			104,700	21,600
Share-based compensation			36,500	38,700
Purchase of common stock			10,200
Tax benefit relating to share-based compensation plans			26,800	7,200
Purchase of noncontrolling interest				(13,200)
Ending balance	1,324,600	1,115,200	1,324,600	1,115,200
Retained Earnings [Member]
Beginning balance			520,000	1,133,400
Net income			214,200	373,000
Cash dividends declared in current year			(32,700)	(33,400)
Purchase of common stock			(184,100)	(301,100)
Ending balance	517,400	1,171,900	517,400	1,171,900
Accumulated Other Comp. (Loss) Inc. [Member]
Beginning balance			(56,200)	(24,700)
Change in derivative instruments designated as cash flow hedges (net of taxes)			(4,100)	2,200
Foreign currency translation adjustment			41,900	(60,100)
Amortization of items included in net periodic benefit cost (net of taxes)			3,900	3,400
Ending balance	(14,500)	(79,200)	(14,500)	(79,200)
Noncontrolling Interest [Member]
Beginning balance				12,300
Net income				400
Change in derivative instruments designated as cash flow hedges (net of taxes)
Foreign currency translation adjustment
Amortization of items included in net periodic benefit cost (net of taxes)
Total comprehensive income
Cash dividends declared in current year
Issuance of common stock
Share-based compensation
Purchase of common stock
Tax benefit relating to share-based compensation plans
Purchase of noncontrolling interest				(12,700)
Ending balance