Other Comprehensive Earnings (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax	$ 3,875	$ 0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	0	0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	3,875	0
TranslationAdjustmentForNetInvestmentHedgeIncreaseDecrease	(30,521)	(6,165)
Foreign currency translation adjustments [Abstract]
Foreign currency translation adjustments, before tax	33,090	6,611
Foreign currency translation adjustments, tax	10,682	2,158
Total foreign currency translation adjustment	43,772	8,769
Pension and other postretirement benefit plans [Abstract]
Pension and other postretirement benefit plans, before tax	3,001	3,691
Pension and other postretirement benefit plans, tax	(961)	(1,241)
Total pension and other postretirement benefit plans	2,040	2,450
Changes in fair value of cash flow hedges [Abstract]
Changes in fair value of cash flow hedges, before tax	(213)	(147)
Changes in fair value of cash flow hedges, tax	74	51
Total cash flow hedges	(139)	(96)
Other comprehensive earnings other adjustment, net of tax [Abstract]
Other, before tax	383	2,090
Other, tax	(46)	(251)
Other	337	1,839
Total other comprehensive earnings [Abstract]
Other comprehensive earnings (loss), before Tax	36,261	12,245
Other comprehensive earnings (loss), tax	9,749	717
Other comprehensive earnings	46,010	12,962
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net earnings	172,247	99,356
Other comprehensive earnings	46,010	12,962
Comprehensive earnings	218,257	112,318
Other Comprehensive Income Loss Reclassification Adjustment From AOCI Pension And Other Postretirement Benefit Plans Net Of Tax Abstract [Abstract]
Amortization of actuarial losses	1,899	2,076
Amortization of prior service costs	1,102	1,615
Total before tax	3,001	3,691
Tax provision	(961)	(1,241)
Net of tax	2,040	2,450
Other Comprehensive Income Loss Reclassification Adjustment From AOCI Derivatives Net of Tax [Abstract]
Cash flow hedges	(334)	(72)
Tax benefit	117	25
Net of tax	$ (217)	$ (47)