Other Comprehensive Earnings (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Foreign currency translation adjustments [Abstract]
Foreign currency translation, pre-tax	$ 82,694	$ (120,520)	$ 34,181	$ (46,414)
Foreign currency translation, tax	108	(1,896)	(262)	14,942
Total foreign currency translation, net of tax	82,802	(122,416)	33,919	(31,472)
Changes in fair value of cash flow hedges [Abstract]
Changes in fair value of cash flow hedges, pre-tax	298	(2,337)	675	(2,911)
Changes in fair value of cash flow hedges, tax	(104)	818	(236)	1,019
Total cash flow hedges, net of tax	194	(1,519)	439	(1,892)
Pension and other postretirement benefit plans [Abstract]
Pension and other postretirement benefit plans, pre-tax	16,268	0	9,952	0
Pension and other postretirement benefit plans, tax	(5,693)	0	(3,637)	0
Pension and other postretirement benefit plans, net of tax	10,575	0	6,315	0
Other Comprehensive Income Other Adjustment Net Of Tax [Abstract]
Other comprehensive income loss adjustment, pre-tax	(261)	(518)	318	351
Other comprehensive income loss other adjustment, tax	(29)	130	(55)	(14)
Other comprehensive income loss other adjustment, net of tax	(290)	(388)	263	337
Total other comprehensive earnings [Abstract]
Total other comprehensive earnings, pre-tax	98,999	(123,375)	45,126	(48,974)
Total other comprehensive earnings, tax	(5,718)	(948)	(4,190)	15,947
Other comprehensive (loss) earnings	$ 93,281	$ (124,323)	$ 40,936	$ (33,027)