Other Comprehensive Earnings (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Foreign currency translation adjustments [Abstract]
Foreign Currency Transaction and Translation Adjustment, before Tax	$ (35,824)	$ 42,806
Foreign Currency Translation Adjustment, Tax	(1,026)	704
Foreign Currency Transaction and Translation Adjustment, Net of Tax	(36,850)	43,510
Pension and other postretirement benefit plans [Abstract]
Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	8,110	(4,467)
Pension and Other Postretirement Benefit Plans, Tax	(2,838)	1,665
Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	5,272	(2,802)
Changes in fair value of cash flow hedges [Abstract]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax	586	756
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	(205)	(264)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	381	492
Other Comprehensive Income Other Adjustment Net Of Tax [Abstract]
Other Comprehensive Income Loss Adjustment Before Tax	(190)	54
Other Comprehensive Income Loss Other Adjustment Tax	108	(12)
Other comprehensive income loss other adjustment, net of tax	(82)	42
Total other comprehensive earnings [Abstract]
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	(27,318)	39,149
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	(3,961)	2,093
Other comprehensive (loss) earnings	(31,279)	41,242
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Other comprehensive (loss) earnings	(31,279)	41,242
Net earnings	210,003	196,063
Comprehensive earnings	178,724	237,305
Other Comprehensive Income Loss Reclassification Adjustment From AOCI Pension And Other Postretirement Benefit Plans Net Of Tax Abstract [Abstract]
Amortization of actuarial losses	5,931	0
Amortization of prior service costs	2,179	0
Total before tax	8,110	0
Tax provision	(2,838)	0
Net of tax	5,272	0
Other Comprehensive Income Loss Reclassification Adjustment From AOCI Derivatives Net of Tax [Abstract]
Cash flow hedges	0	72
Tax provision	0	(25)
Net of tax	0	47
Commodity Contract [Member]
Other Comprehensive Income Loss Reclassification Adjustment From AOCI Derivatives Net of Tax [Abstract]
Cash flow hedges	0	27
Foreign Exchange Contract [Member]
Other Comprehensive Income Loss Reclassification Adjustment From AOCI Derivatives Net of Tax [Abstract]
Cash flow hedges	$ 0	$ (99)