Condensed Consolidated Statements of Shareholders' Investment (USD $) In Thousands, except Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Beginning balance			$ 1,631,500	$ 2,205,900
Net income	(47,800)	124,700	84,100	245,900
Available-for-sale securities (net of taxes)			(2,100)
Change in derivative instruments designated as cash flow hedges (net of taxes)				3,800
Foreign currency translation adjustment			51,300	(82,000)
Amortization of items included in net periodic benefit cost (net of taxes)			2,600	2,300
Total comprehensive income			135,900	170,000
Cash dividends declared in current year			(32,500)	(33,400)
Issuance of common stock			92,000	22,100
Share-based compensation			25,400	27,400
Purchase of common stock				(231,700)
Tax benefit relating to share-based compensation plans			22,200	5,900
Purchase of noncontrolling interest				(25,900)
Ending balance	1,874,500	2,140,300	1,874,500	2,140,300
Common Stock [Member]
Beginning balance			21,300	24,000
Beginning balance (in shares)			84,973,586	95,917,095
Issuance of common stock			300	100
Issuance of common stock (in shares)			1,672,721	555,768
Purchase of common stock				(700)
Purchase of common stock (in shares)				(2,825,000)
Ending balance	21,600	23,400	21,600	23,400
Ending balance (in shares)	86,646,307	93,647,863	86,646,307	93,647,863
Capital in Excess of Par Value [Member]
Beginning balance			1,146,400	1,060,900
Issuance of common stock			91,700	22,000
Share-based compensation			25,400	27,400
Tax benefit relating to share-based compensation plans			22,200	5,900
Purchase of noncontrolling interest				(13,200)
Ending balance	1,285,700	1,103,000	1,285,700	1,103,000
Retained Earnings [Member]
Beginning balance			520,000	1,133,400
Net income			84,100	245,500
Cash dividends declared in current year			(32,500)	(33,400)
Purchase of common stock				(231,000)
Ending balance	571,600	1,114,500	571,600	1,114,500
Accumulated Other Comp. (Loss) Inc. [Member]
Beginning balance			(56,200)	(24,700)
Available-for-sale securities (net of taxes)			(2,100)
Change in derivative instruments designated as cash flow hedges (net of taxes)				3,800
Foreign currency translation adjustment			51,300	(82,000)
Amortization of items included in net periodic benefit cost (net of taxes)			2,600	2,300
Ending balance	(4,400)	(100,600)	(4,400)	(100,600)
Noncontrolling Interest [Member]
Beginning balance				12,300
Net income				400
Purchase of noncontrolling interest				$ (12,700)