CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE EARNINGS (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Comprehensive Income [Abstract]
Net earnings	$ 269,114	$ 241,046	$ 809,166	$ 651,210
Foreign currency translation adjustments [Abstract]
Foreign currency translation gains during period	61,800	82,802	19,605	33,919
Reclassification of foreign currency translation losses to earnings upon sale of subsidiaries	0	0	2,905	0
Total foreign currency translation	61,800	82,802	22,510	33,919
Pension and other postretirement benefit plans [Abstract]
Actuarial gains (losses) arising during period	80,455	0	80,455	(3,953)
Prior service cost arising during period	(121)	0	(121)	(307)
Amortization of actuarial losses included in net periodic pension cost	2,737	6,647	10,491	6,647
Amortization of prior service cost included in net periodic pension cost	1,436	3,928	4,286	3,928
Total pension and other postretirement benefit plans	84,507	10,575	95,111	6,315
Changes in fair value of cash flow hedges [Abstract]
Unrealized net gains arising during period	106	164	200	380
Net gains reclassified into earnings	(401)	30	(313)	59
Total cash flow hedges	(295)	194	(113)	439
Other comprehensive income loss other adjustment, net of tax	115	(290)	280	263
Other comprehensive earnings, net of tax	146,127	93,281	117,788	40,936
Comprehensive earnings	$ 415,241	$ 334,327	$ 926,954	$ 692,146