Condensed Consolidated Statements of Earnings and Comprehensive Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Sales
Product	$ 3,421	$ 3,341
Service	2,683	2,857
Total sales	6,104	6,198
Operating costs and expenses
Product	2,631	2,527
Service	2,156	2,314
General and administrative expenses	558	561
Operating income	759	796
Other (expense) income
Interest expense	(53)	(53)
Other, net	6	13
Earnings before income taxes	712	756
Federal and foreign income tax expense	223	250
Net earnings	489	506
Basic earnings per share
Basic earnings per share (in dollars per share)	$ 2.07	$ 2.00
Weighted-average common shares outstanding, in millions (shares)	236.4	253.1
Diluted earnings per share
Diluted earnings per share (in dollars per share)	$ 2.03	$ 1.96
Weighted-average diluted shares outstanding, in millions (shares)	241.0	258.0
Net earnings (from above)	489	506
Other comprehensive income
Change in unamortized benefit plan costs, net of tax	80	50
Change in cumulative translation adjustment	(16)	6
Other comprehensive income, net of tax	64	56
Comprehensive income	$ 553	$ 562