Consolidated Statement of Earnings - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	[1]	Dec. 31, 2018	[1]
Revenue:
Revenue*	$ 37,925	$ 39,350		$ 36,193
Operating costs and expenses:
General and administrative (G&A)	(2,192)	(2,417)		(2,263)
Operating costs and expenses, Total	(33,792)	(34,780)		(31,799)
Operating earnings	4,133	4,570		4,394
Other, net	82	92		47
Interest, net	(477)	(460)		(356)
Earnings from continuing operations before income tax	3,738	4,202		4,085
Provision for income tax, net	(571)	(718)		(727)
Earnings from continuing operations	3,167	3,484		3,358
Discontinued operations, net of tax provision of $13 in 2018	0	0		(13)
Net earnings	$ 3,167	$ 3,484		$ 3,345
Basic:
Continuing operations	$ 11.04	$ 12.09		$ 11.37
Discontinued operations	0	0		(0.04)
Net earnings	11.04	12.09		11.33
Diluted:
Continuing operations	11.00	11.98		11.22
Discontinued operations	0	0		(0.04)
Net earnings	$ 11.00	$ 11.98		$ 11.18
Products
Revenue:
Revenue*	$ 22,188	$ 23,130		$ 20,149
Operating costs and expenses:
Cost of sales	(18,192)	(18,611)		(15,926)
Services
Revenue:
Revenue*	15,737	16,220		16,044
Operating costs and expenses:
Cost of sales	$ (13,408)	$ (13,752)		$ (13,610)

[1] *Prior-period information has been restated for the retrospective application of a change in accounting principle related to the amortization of actuarial gains and losses for our qualified U.S. government pension plans, which we adopted in the fourth quarter of 2020. For further discussion of this change in accounting principle, see Note T to the Consolidated Financial Statements.