Shareholders' Equity Schedule of Other Comprehensive Income (Loss) Tax Effect (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Before-tax amount [Abstract]
Net unrealized gain (loss) on a nonderivative net investment hedging instrument	$ 0	$ (14,278)	$ 25,760
Pension plan benefits liability adjustment	(24,358)	717	(3,074)
Net-of-tax amount
Foreign currency translation adjustments	21,382	1,054	(124,304)
Net unrealized gain (loss) on derivative instruments designated as cash flow hedges	(1,689)	1,909	(2,930)
Net unrealized gain (loss) on nonderivative hedging instruments	0	(8,866)	15,825
Net hedging (gain) loss reclassified into net income (loss)	0	2,611	7,371
Pension plan benefits liability adjustment, net	(16,940)	852	(2,179)
Total other comprehensive income (loss), net of tax	2,753	(2,440)	(106,217)
Parent [Member]
Before-tax amount [Abstract]
Foreign currency translation adjustment	28,002	1,101	(121,031)
Net unrealized gain (loss) on derivative instruments designated as cash flow hedges	(2,725)	3,054	(4,541)
Net unrealized gain (loss) on a nonderivative net investment hedging instrument	0	(14,278)	25,760
Net hedging (gain) loss reclassified into net income (loss)	0	4,200	11,829
Pension plan benefits liability adjustment	(24,358)	717	(3,074)
Total other comprehensive income (loss), before tax	919	(5,206)	(91,057)
Tax (provision) benefit [Abstract]
Foreign currency translation adjustment	(6,597)	207	(3,160)
Net unrealized gain (loss) on derivative instruments designated as cash flow hedges	1,036	(1,145)	1,611
Net unrealized gain (loss) on a nonderivative net investment hedging instrument	0	5,412	(9,935)
Net hedging (gain) loss reclassified into net income (loss)	0	(1,589)	(4,458)
Pension plan benefits liability adjustment	7,418	135	895
Total other comprehensive income (loss) tax (provision) benefit	1,857	3,020	(15,047)
Net-of-tax amount
Foreign currency translation adjustments	21,405	1,308	(124,191)
Net unrealized gain (loss) on derivative instruments designated as cash flow hedges	(1,689)	1,909	(2,930)
Net unrealized gain (loss) on nonderivative hedging instruments	0	(8,866)	15,825
Net hedging (gain) loss reclassified into net income (loss)	0	2,611	7,371
Pension plan benefits liability adjustment, net	(16,940)	852	(2,179)
Total other comprehensive income (loss), net of tax	$ 2,776	$ (2,186)	$ (106,104)