Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Comprehensive Income (Loss) [Abstract]
Net earnings	$ 494	$ 391	$ 1,409	$ 1,181
Other comprehensive income (loss), net of tax:
Total other comprehensive income (loss), net of tax	(158)	29	(154)	35
Total comprehensive income (loss)	336	420	1,255	1,216
Other comprehensive income (loss) before reclassifications			(9)
Reclassifications from accumulated other comprehensive income (loss) to net earnings			(145)
Continuing Operations [Member]
Other comprehensive income (loss), net of tax:
Cumulative translation adjustments	3	13	(3)	27
Amortization of net actuarial loss	11	8	33	23
Change in fair value of cash flow hedges	1	0	0	0
Unrealized gain (loss) on securities	0	1	1	2
Total other comprehensive income (loss), net of tax	15	22	31	52
Discontinued Operations [Member]
Other comprehensive income (loss), net of tax:
Other comprehensive income (loss) before reclassifications	5	7	(7)	(17)
Reclassifications from accumulated other comprehensive income (loss) to net earnings	$ (178)	$ 0	$ (178)	$ 0