CONSOLIDATED STATEMENT OF EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Capital In Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Common Stock Held In Treasury	Noncontrolling Interests	Comprehensive Income
Balance at Dec. 31, 2010	$ 1,927,432	$ 12,663	$ 568,035	$ 1,751,908	$ 91,117	$ (544,100)	$ 47,809
Increase (Decrease) in Shareholders' Equity
Net income	52,796			51,210			1,586	52,796
Unrecognized gain reclassified to earnings, net of tax of $84	(132)				(132)			(132)
Translation adjustment	32,296				31,580		716	32,296
Pension and other postretirement liability adjustment, net of tax effect of $3,720 and $2,240 for the period ended March 31, 2012 and 2011, respectively	3,897				3,897			3,897
Total comprehensive income	88,857							88,857
Cash dividends declared on common stock $0.25 and $0.24 per share for the period ended March 31, 2012 and 2011, respectively	(26,463)			(26,463)
Stock incentive programs and related tax withholdings (107,759 shares and 202,879 shares) for the period ended March 31, 2012 and 2011, respectively	(3,457)	20	(3,477)
Excess tax benefit (expense) from share-based payment arrangements	431		431
Share-based compensation	4,680		4,680
Purchase of subsidiary shares from noncontrolling interests	(380)		(170)				(210)
Purchase of 1,675,731 shares of common stock	(54,345)					(54,345)
Balance at Mar. 31, 2011	1,936,755	12,683	569,499	1,776,655	126,462	(598,445)	49,901
Balance at Dec. 31, 2011	1,582,103	12,694	532,441	1,832,893	(90,744)	(705,181)
Increase (Decrease) in Shareholders' Equity
Net income	43,970			43,970				43,970
Unrecognized gain reclassified to earnings, net of tax of $84	(132)				(132)			(132)
Translation adjustment	35,874				35,874			35,874
Pension and other postretirement liability adjustment, net of tax effect of $3,720 and $2,240 for the period ended March 31, 2012 and 2011, respectively	6,557				6,557			6,557
Total comprehensive income	86,269							86,269
Cash dividends declared on common stock $0.25 and $0.24 per share for the period ended March 31, 2012 and 2011, respectively	(26,492)			(26,492)
Stock incentive programs and related tax withholdings (107,759 shares and 202,879 shares) for the period ended March 31, 2012 and 2011, respectively	(1,616)	11	(1,627)
Excess tax benefit (expense) from share-based payment arrangements	(203)		(203)
Share-based compensation	4,885		4,885
Balance at Mar. 31, 2012	$ 1,644,946	$ 12,705	$ 535,496	$ 1,850,371	$ (48,445)	$ (705,181)	$ 0