CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net earnings		$ 63,944	$ 45,932	$ 147,141	$ 118,714
Other comprehensive income
Foreign currency translation, net of tax	[1]	25,393	(12,366)	69,294	(26,907)
Pension and postretirement adjustments, net of tax	[2]	1,280	1,634	4,974	4,766
Other comprehensive income (loss), net of tax		26,673	(10,732)	74,268	(22,141)
Comprehensive income		$ 90,617	$ 35,200	$ 221,409	$ 96,573

[1] The tax expense included in other comprehensive income for foreign currency translation adjustments for the three and nine months ended September 30, 2017 were $0.4 million and $1.6 million, respectively. The tax benefit included in other comprehensive loss for foreign currency translation adjustments for the three and nine months ended September 30, 2016 were $0.7 million and $1.0 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, 2017 were $0.8 million and $3.3 million, respectively. The tax expense included in other comprehensive income for pension and postretirement adjustments for the three and nine months ended September 30, 2016 were $0.9 million and $3.0 million, respectively.