Consolidated Statements of Earnings and Comprehensive Income (Loss) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Sales
Product	$ 16,038	$ 14,738	$ 13,966
Service	9,765	9,770	9,560
Total sales	25,803	24,508	23,526
Operating costs and expenses
Product	12,271	11,002	10,333
Service	7,578	7,729	7,551
General and administrative expenses	2,655	2,584	2,566
Operating income	3,299	3,193	3,076
Other (expense) income
Interest expense	(360)	(301)	(301)
Other, net	110	31	15
Earnings before income taxes	3,049	2,923	2,790
Federal and foreign income tax expense	1,034	723	800
Net earnings	$ 2,015	$ 2,200	$ 1,990
Basic earnings per share
Basic earnings per share	$ 11.55	$ 12.30	$ 10.51
Weighted-average common shares outstanding, in millions	174.4	178.9	189.4
Diluted earnings per share
Diluted earnings per share	$ 11.47	$ 12.19	$ 10.39
Weighted-average diluted shares outstanding, in millions	175.6	180.5	191.6
Net earnings (from above)	$ 2,015	$ 2,200	$ 1,990
Other comprehensive income (loss)
Change in unamortized benefit plan costs, net of tax (expense) benefit of ($383) in 2017, $89 in 2016 and ($45) in 2015	830	(175)	75
Change in cumulative translation adjustment	(4)	(50)	(41)
Other, net	2	(1)	2
Other comprehensive income (loss), net of tax	828	(226)	36
Comprehensive income	$ 2,843	$ 1,974	$ 2,026