CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net earnings		$ 82,510	$ 74,483	$ 218,175	$ 192,914
Other comprehensive income
Foreign currency translation, net of tax	[1]	(24,734)	(2,230)	(15,952)	(30,590)
Pension and postretirement adjustments, net of tax	[2]	1,311	3,458	4,743	9,142
Other comprehensive income (loss), net of tax		(23,423)	1,228	(11,209)	(21,448)
Comprehensive income		$ 59,087	$ 75,711	$ 206,966	$ 171,466

[1] 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. The tax benefit included in other comprehensive loss for foreign currency translation adjustments for the three and nine months ended September 30, 2018 was $0.5 million and $1.7 million, respectively.

[2] 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. The tax expense included in other comprehensive income for pension and postretirement adjustments for the three and nine months ended September 30, 2018 was $1.1 million and $2.9 million, respectively.