CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,123,818	$ 683,451	$ 677,918
Foreign currency translation adjustments:
Foreign currency translation (losses) gains	(39,819)	55,450	(5,025)
Reclassification of foreign currency translation losses to earnings	0	0	25,339
Total foreign currency translation adjustments (net of $(20,976), $26,957 and $(4,714) tax (provision) benefit, respectively)	(39,819)	55,450	20,314
Pension and other postretirement benefit plans:
Actuarial gains	26,960	705	47
Prior service (cost) credit	(1,433)	828	1,818
Amortization of actuarial losses included in net periodic pension cost	9,451	6,695	596
Amortization of prior service costs included in net periodic pension cost	1,023	1,153	2,141
Settlement and curtailment impact	1,167	18	806
Total pension and other postretirement benefit plans (net of $(9,868), $(3,197) and $(1,184) tax (provision) benefit, respectively)	37,168	9,399	5,408
Changes in fair value of cash flow hedges:
Unrealized net gains (losses)	6,724	(1,445)	1,495
Net gains reclassified into earnings	(4,871)	(632)	(147)
Total cash flow hedges (net of $(532), $607 and $(359) tax (provision) benefit, respectively)	1,853	(2,077)	1,348
Other comprehensive (loss) earnings, net of tax	(798)	62,772	27,070
Comprehensive earnings	$ 1,123,020	$ 746,223	$ 704,988