Accumulated Other Comprehensive Income (Loss) (Component Of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended		3 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Cumulative Currency Translation Adjustment [Member]		Jun. 30, 2011 Cumulative Currency Translation Adjustment [Member]		Mar. 31, 2011 Cumulative Currency Translation Adjustment [Member]		Sep. 30, 2010 Cumulative Currency Translation Adjustment [Member]		Jun. 30, 2010 Cumulative Currency Translation Adjustment [Member]		Mar. 31, 2010 Cumulative Currency Translation Adjustment [Member]		Sep. 30, 2011 Foreign Currency Gains (Losses) [Member]	Jun. 30, 2011 Foreign Currency Gains (Losses) [Member]	Mar. 31, 2011 Foreign Currency Gains (Losses) [Member]	Sep. 30, 2010 Foreign Currency Gains (Losses) [Member]	Jun. 30, 2010 Foreign Currency Gains (Losses) [Member]	Mar. 31, 2010 Foreign Currency Gains (Losses) [Member]	Sep. 30, 2011 Unrealized Gains (Losses) On Cash Flow Hedges [Member]	Jun. 30, 2011 Unrealized Gains (Losses) On Cash Flow Hedges [Member]	Mar. 31, 2011 Unrealized Gains (Losses) On Cash Flow Hedges [Member]	Sep. 30, 2010 Unrealized Gains (Losses) On Cash Flow Hedges [Member]	Jun. 30, 2010 Unrealized Gains (Losses) On Cash Flow Hedges [Member]	Mar. 31, 2010 Unrealized Gains (Losses) On Cash Flow Hedges [Member]	Sep. 30, 2011 Pension And Postretirement Benefit Plans [Member]	Jun. 30, 2011 Pension And Postretirement Benefit Plans [Member]	Mar. 31, 2011 Pension And Postretirement Benefit Plans [Member]	Sep. 30, 2010 Pension And Postretirement Benefit Plans [Member]	Jun. 30, 2010 Pension And Postretirement Benefit Plans [Member]	Mar. 31, 2010 Pension And Postretirement Benefit Plans [Member]	Sep. 30, 2011 Accumulated Other Comprehensive Income [Member]	Jun. 30, 2011 Accumulated Other Comprehensive Income [Member]	Mar. 31, 2011 Accumulated Other Comprehensive Income [Member]	Sep. 30, 2010 Accumulated Other Comprehensive Income [Member]	Jun. 30, 2010 Accumulated Other Comprehensive Income [Member]	Mar. 31, 2010 Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period			$ 61,425		$ 118,238	[1]	$ 100,527	[1]	$ 69,282	[1]	$ 47,965	[1]	$ 95,753	[1]	$ 134,573	[1]	$ 19,881	$ 22,185	$ 19,095	$ (12,087)	$ (12,102)	$ (21,319)	$ (697)	$ (683)	$ (933)	$ (995)	$ (688)	$ (250)	$ (26,657)	$ (26,759)	$ (26,019)	$ (30,102)	$ (30,287)	$ (30,490)	$ 110,765	$ 95,270	$ 61,425	$ 4,781	$ 52,676	$ 82,514
Before tax income (loss)					(52,649)	[1]	17,711	[1]	31,245	[1]	29,526	[1]	(47,788)	[1]	(38,820)	[1]	(2,715)	(2,403)	3,524	31,850	664	8,920	83	(23)	404	(247)	(495)	(706)	1,109	136	(669)	82	260	287	(54,172)	15,421	34,504	61,211	(47,359)	(30,319)
Income tax effect						[1]		[1]		[1]		[1]		[1]		[1]	(734)	99	(434)	140	(649)	297	(31)	9	(154)	94	188	268	(800)	(34)	(71)	(6)	(75)	(84)	(1,565)	74	(659)	228	(536)	481
Other comprehensive income (loss)	(55,737)	61,439	(6,397)	(16,294)	(52,649)	[1]	17,711	[1]	31,245	[1]	29,526	[1]	(47,788)	[1]	(38,820)	[1]	(3,449)	(2,304)	3,090	31,990	15	9,217	52	(14)	250	(153)	(307)	(438)	309	102	(740)	76	185	203	(55,737)	15,495	33,845	61,439	(47,895)	(29,838)
Balance at ending of period	$ 55,028		$ 55,028		$ 65,589	[1]	$ 118,238	[1]	$ 100,527	[1]	$ 77,491	[1]	$ 47,965	[1]	$ 95,753	[1]	$ 16,432	$ 19,881	$ 22,185	$ 19,903	$ (12,087)	$ (12,102)	$ (645)	$ (697)	$ (683)	$ (1,148)	$ (995)	$ (688)	$ (26,348)	$ (26,657)	$ (26,759)	$ (30,026)	$ (30,102)	$ (30,287)	$ 55,028	$ 110,765	$ 95,270	$ 66,220	$ 4,781	$ 52,676

[1] Income taxes are generally not provided for foreign currency translation adjustments, as such adjustments relate to permanent investments in international subsidiaries.