CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock Issued	Common Stock Treasury	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Balances at Dec. 31, 2008	$ 1,449,972	$ 138,925	$ (733,203)	$ 137,083	$ 2,079,170	$ (208,299)	$ 36,296
Increase (Decrease) in Stockholders' Equity
Net income (loss)	125,772				118,777		6,995
Cash dividends declared:
Common @ $0.82, $0.82 and $0.805 per share in 2011, 2010 and 2009, respectively	(64,650)				(64,650)
Noncontrolling interests	(3,487)						(3,487)
Translation adjustments, net of deferred income taxes of $2,504, $7,612 and $(21,866) in 2011, 2010 and 2009, respectively	97,064					96,802	262
Cash flow hedging instrument adjustments, net of deferred income taxes of $(2,101), $347 and $10,849 in 2011, 2010 and 2009, respectively	(30,041)					(30,041)
Purchase of subsidiary shares from noncontrolling interests	(13,046)			(3,905)			(9,141)
Contributions from noncontrolling interests	5,332						5,332
Pension liability adjustments, net of deferred income taxes of $19,143, $(9,727) and $26,012 in 2011, 2010 and 2009, respectively	(60,150)					(60,150)
Marketable securities unrealized gains (loss), net of deferred income taxes of $7, $(7) and $(2) in 2011, 2010 and 2009, respectively	4					4
Stock options exercised, net 157,058, 91,485 and 76,605 shares in 2011, 2010 and 2009, respectively	1,058	115	(423)	1,366
Vesting of restricted stock units, net 92,630, 69,515 and 101,918 shares in 2011, 2010 and 2009, respectively	(1,880)	194	(1,390)	(684)
Amortization of unearned stock-based compensation, net of forfeitures	3,886			3,886
Balances at Dec. 31, 2009	1,509,834	139,234	(735,016)	137,746	2,133,297	(201,684)	36,257
Increase (Decrease) in Stockholders' Equity
Net income (loss)	12,459				6,754		5,705
Cash dividends declared:
Common @ $0.82, $0.82 and $0.805 per share in 2011, 2010 and 2009, respectively	(66,131)				(66,131)
Noncontrolling interests	(5,850)						(5,850)
Translation adjustments, net of deferred income taxes of $2,504, $7,612 and $(21,866) in 2011, 2010 and 2009, respectively	(6,633)					(6,430)	(203)
Cash flow hedging instrument adjustments, net of deferred income taxes of $(2,101), $347 and $10,849 in 2011, 2010 and 2009, respectively	(700)					(700)
Purchase of subsidiary shares from noncontrolling interests	(1,159)			(1,003)			(156)
Contributions from noncontrolling interests	698						698
Pension liability adjustments, net of deferred income taxes of $19,143, $(9,727) and $26,012 in 2011, 2010 and 2009, respectively	22,872					22,872
Marketable securities unrealized gains (loss), net of deferred income taxes of $7, $(7) and $(2) in 2011, 2010 and 2009, respectively	10					10
Stock options exercised, net 157,058, 91,485 and 76,605 shares in 2011, 2010 and 2009, respectively	754	144	(836)	1,446
Vesting of restricted stock units, net 92,630, 69,515 and 101,918 shares in 2011, 2010 and 2009, respectively	(1,306)	136	(1,254)	(188)
Amortization of unearned stock-based compensation, net of forfeitures	3,297			3,297
Balances at Dec. 31, 2010	1,468,145	139,514	(737,106)	141,298	2,073,920	(185,932)	36,451
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(9,556)				(11,510)		1,954
Cash dividends declared:
Common @ $0.82, $0.82 and $0.805 per share in 2011, 2010 and 2009, respectively	(66,176)				(66,176)
Noncontrolling interests	(4,171)						(4,171)
Translation adjustments, net of deferred income taxes of $2,504, $7,612 and $(21,866) in 2011, 2010 and 2009, respectively	(60,575)					(60,354)	(221)
Cash flow hedging instrument adjustments, net of deferred income taxes of $(2,101), $347 and $10,849 in 2011, 2010 and 2009, respectively	5,933					5,933
Contributions from noncontrolling interests	9,526						9,526
Pension liability adjustments, net of deferred income taxes of $19,143, $(9,727) and $26,012 in 2011, 2010 and 2009, respectively	(123,827)					(123,827)
Marketable securities unrealized gains (loss), net of deferred income taxes of $7, $(7) and $(2) in 2011, 2010 and 2009, respectively	(11)					(11)
Stock options exercised, net 157,058, 91,485 and 76,605 shares in 2011, 2010 and 2009, respectively	2,319	249	(840)	2,910
Vesting of restricted stock units, net 92,630, 69,515 and 101,918 shares in 2011, 2010 and 2009, respectively	226	151	(910)	985
Treasury shares repurchased, 286,577 shares	(5,788)		(5,788)
Amortization of unearned stock-based compensation, net of forfeitures	3,873			3,873
Balances at Dec. 31, 2011	$ 1,219,918	$ 139,914	$ (744,644)	$ 149,066	$ 1,996,234	$ (364,191)	$ 43,539