CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE EARNINGS (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net earnings	$ 186,098	$ 231,844	$ 728,004	$ 605,941
Foreign currency translation adjustments [Abstract]
Foreign currency translation gains (losses) during period	(57,213)	(70,369)	(101,755)	(76,771)
Reclassification of foreign currency translation losses to earnings upon sale of subsidiaries	0	(8,406)	(3,117)	(8,406)
Total foreign currency translation	(57,213)	(78,775)	(104,872)	(85,177)
Pension and other postretirement benefit plans [Abstract]
Amortization of actuarial losses included in net periodic pension cost	2,575	1,287	7,763	4,172
Amortization of prior service cost included in net periodic pension cost	1,227	1,516	3,682	4,300
Total pension and other postretirement benefit plans	3,802	2,803	11,445	8,472
Changes in fair value of cash flow hedges [Abstract]
Unrealized net (losses) gains arising during period	185	(466)	536	(861)
Net (gains) losses reclassified into earnings	(678)	169	(207)	(20)
Total cash flow hedges	(493)	(297)	329	(881)
Other comprehensive earnings (loss) other adjustment	393	927	884	1,546
Other comprehensive earnings (loss)	(53,511)	(75,342)	(92,214)	(76,040)
Comprehensive earnings	$ 132,587	$ 156,502	$ 635,790	$ 529,901