Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net earnings	$ 2,745	$ 2,655	$ 2,878
Postretirement benefit plans:
Unrecognized amounts in 2012, 2011, and 2010, net of tax benefit of $1.8 billion, $1.6 billion, and $531 million	(3,204)	(2,858)	(983)
Recognition of previously deferred amounts in 2012, 2011, and 2010, net of tax expense of $469 million, $364 million, and $304 million	858	666	553
Other, net	110	(55)	15
Other comprehensive loss, net of tax	(2,236)	(2,247)	(415)
Comprehensive income	$ 509	$ 408	$ 2,463