Condensed Consolidated Statements of Earnings and Comprehensive Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Sales
Product	$ 3,593	$ 3,399	$ 7,014	$ 6,740
Service	2,701	2,875	5,384	5,732
Total sales	6,294	6,274	12,398	12,472
Operating costs and expenses
Product	2,703	2,604	5,334	5,131
Service	2,203	2,316	4,359	4,630
General and administrative expenses	582	580	1,140	1,141
Operating income	806	774	1,565	1,570
Other (expense) income
Interest expense	(60)	(52)	(113)	(105)
Other, net	(22)	5	(16)	18
Earnings before income taxes	724	727	1,436	1,483
Federal and foreign income tax expense	236	247	459	497
Net earnings	488	480	977	986
Basic earnings per share
Basic earnings per share (in dollars per share)	$ 2.09	$ 1.91	$ 4.15	$ 3.91
Weighted-average common shares outstanding, in millions (shares)	234.0	250.8	235.2	252.0
Diluted earnings per share
Diluted earnings per share (in dollars per share)	$ 2.05	$ 1.88	$ 4.08	$ 3.84
Weighted-average diluted shares outstanding, in millions (shares)	237.5	254.7	239.2	256.5
Net earnings (from above)	488	480	977	986
Other comprehensive income
Change in unamortized benefit plan costs, net of tax	79	54	159	104
Change in cumulative translation adjustment	9	(15)	(7)	(9)
Other comprehensive income, net of tax	88	39	152	95
Comprehensive income	$ 576	$ 519	$ 1,129	$ 1,081