Consolidated Statement Of Shareholders' Equity (USD $) In Thousands, except Share data	Common Stock [Member]	Capital In Excess Of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2008	$ 14,470	$ 106,073	$ 2,222,641	$ (325,105)	$ (1,444,968)	$ 7,531
Balance, Shares at Dec. 31, 2008					(37,100,778)
Net income			195,526			(4,624)	195,526
Cumulative translation adjustments				81,240			81,240
Gains (losses) on derivatives qualifying as hedges				1,091			1,091
Pension liability and postretirement adjustment; net of tax				(28,200)			(28,200)
Cash dividends declared			(78,962)
Stock options/SSAR's, value		(1,294)			8,098
Stock options/SSAR's, shares					207,435
Reacquired shares, value					(1,967)
Reacquired shares, shares					(75,000)
Vested restricted stock units and awards, value		(13,026)			9,190
Vested restricted stock units and awards, shares					236,462
Stock based compensation, value		18,621			5,575
Stock based compensation, shares					127,434
Balance at Dec. 31, 2009	14,470	110,374	2,339,205	(270,974)	(1,424,072)	2,907
Balance, Shares at Dec. 31, 2009					(36,604,447)
Net income			263,557			826	263,557
Cumulative translation adjustments				(6,220)			(6,220)
Gains (losses) on derivatives qualifying as hedges				(1,442)			(1,442)
Pension liability and postretirement adjustment; net of tax				3,285			3,285
Cash dividends declared			(83,056)
Stock options/SSAR's, value		(333)			30,461
Stock options/SSAR's, shares					779,317
Vested restricted stock units and awards, value		(11,544)			4,337
Vested restricted stock units and awards, shares					111,484
Stock based compensation, value		13,844			6,062
Stock based compensation, shares					162,171
Other		11,468
Balance at Dec. 31, 2010	14,470	123,809	2,519,706	(275,351)	(1,383,212)	3,733	1,003,155
Balance, Shares at Dec. 31, 2010					(35,551,475)		(35,551,475)
Net income			266,866			(738)	266,866
Cumulative translation adjustments				(36,581)			(36,581)
Gains (losses) on derivatives qualifying as hedges				8,420			8,420
Pension liability and postretirement adjustment; net of tax				(71,797)			(71,797)
Cash dividends declared			(93,679)
Stock options/SSAR's, value		517			15,018
Stock options/SSAR's, shares					385,405
Vested restricted stock units and awards, value		(16,284)			7,449
Vested restricted stock units and awards, shares					190,813
Stock based compensation, value		20,589			4,472
Stock based compensation, shares					134,625
Balance at Dec. 31, 2011	$ 14,470	$ 128,631	$ 2,692,893	$ (375,309)	$ (1,356,273)	$ 2,995	$ 1,107,407
Balance, Shares at Dec. 31, 2011					(34,840,632)		(34,840,632)