Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net earnings	$ 3,605	$ 3,614	$ 2,981
Postretirement benefit plans
Net other comprehensive (loss) income recognized during the period, net of tax benefit (expense) of $0.2 billion in 2015, $1.5 billion in 2014 and $(1.6) billion in 2013	(351)	(2,870)	2,868
Amounts reclassified from accumulated other comprehensive loss, net of tax expense of $464 million in 2015, $386 million in 2014 and $555 million in 2013	850	706	1,015
Other, net	(73)	(105)	9
Other comprehensive income (loss), net of tax	426	(2,269)	3,892
Comprehensive income	$ 4,031	$ 1,345	$ 6,873