Statement of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net earnings	$ 512,611	$ 375,972	$ 384,370
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	(32,573)	83,982	(57,928)
Unrealized gains (losses) on cash flow hedging arrangements:
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(658)	1,424	(513)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	2,441	(273)	(4,735)
Net actuarial gains (losses)	(23,326)	(10,378)	(47,788)
Plan amendments and prior service cost	(780)	12,056	0
Amortization of actuarial (gains) losses and plan amendments and prior service cost	14,366	14,873	16,730
Defined Benefit Plans, Impact of FX on Current Year Change in OCI, net of tax	3,522	(12,092)	5,885
Total other comprehensive income (loss), net of tax	(37,008)	89,592	(88,349)
Total other comprehensive income (loss), net of tax	$ 475,603	$ 465,564	$ 296,021