CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net earnings	$ 191	$ 1,164	$ 436	$ 1,649
Other comprehensive income:
Foreign currency translation adjustments	(43)	(26)	(78)	(27)
Actuarial gains (losses), net of tax expense (benefit) of $25, ($91), $75 and ($58)	55	(143)	161	(76)
Prior service costs, net of tax expense (benefit) of ($1), ($13), $0 and ($43)	(1)	(25)	(3)	(68)
Unrealized gains on available-for-sale securities	(1)	0	0	0
Total other comprehensive income (loss)	10	(194)	80	(171)
Comprehensive income	$ 201	$ 970	$ 516	$ 1,478