Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net earnings	$ 52,916	$ 48,232
Other comprehensive loss:
Changes in cumulative translation adjustment and other	(57,372)	(14,592)
Amortization of pension and postretirement items	7,058	5,033
Income tax expense related to amortization of pension and postretirement items	(2,448)	(1,906)
Amortization of pension and postretirement items, net of taxes	4,610	3,127
Other comprehensive loss, net of taxes	(52,762)	(11,465)
Comprehensive income	$ 154	$ 36,767