CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net earnings		$ 64,620	$ 82,510	$ 147,399	$ 218,175
Other comprehensive income
Foreign currency translation, net of tax	[1]	28,229	(24,734)	2,139	(15,952)
Pension and postretirement adjustments, net of tax	[2]	3,561	1,311	12,244	4,743
Other comprehensive income (loss), net of tax		31,790	(23,423)	14,383	(11,209)
Comprehensive income		$ 96,410	$ 59,087	$ 161,782	$ 206,966

[1] The tax benefit included in other comprehensive income for foreign currency translation adjustments for the three and nine months ended September 30, 2020 was $0.6 million and $1.0 million, respectively. The tax benefit included in other comprehensive loss for foreign currency translation adjustments for both the three and nine months ended September 30, 2019 was $0.6 million.

[2] The tax expense included in other comprehensive income for pension and postretirement adjustments for the three and nine months ended September 30, 2020 was $1.3 million and $4.0 million, respectively. The tax expense included in other comprehensive income for pension and postretirement adjustments for the three and nine months ended September 30, 2019 was $0.4 million and $1.5 million, respectively.