Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities
Net earnings	$ 6,315	$ 6,833	$ 6,230
Adjustments to reconcile net earnings to net cash provided by operating activities
Depreciation and amortization	1,364	1,290	1,189
Stock-based compensation	227	221	189
Equity method investment impairment	0	128	0
Tax resolution related to former IS&GS business	0	55	0
Deferred income taxes	(183)	5	222
Pension settlement charge	1,665	0	0
Severance and restructuring charges	36	27	0
Gain on property sale	0	0	(51)
Changes in assets and liabilities
Receivables, net	15	359	107
Contract assets	(1,034)	(451)	378
Inventories	564	74	(622)
Accounts payable	(98)	(372)	(1,098)
Contract liabilities	562	491	563
Income taxes	45	(19)	(151)
Postretirement benefit plans	(267)	(1,197)	81
Other, net	10	739	274
Net cash provided by operating activities	9,221	8,183	7,311
Investing activities
Capital expenditures	(1,522)	(1,766)	(1,484)
Acquisitions of businesses	0	(282)	0
Other, net	361	38	243
Net cash used for investing activities	(1,161)	(2,010)	(1,241)
Financing activities
Repayment of commercial paper, net	0	0	(600)
Issuance of long-term debt, net of related costs	0	1,131	0
Repayments of long-term debt	(500)	(1,650)	(900)
Repurchases of common stock	(4,087)	(1,100)	(1,200)
Dividends paid	(2,940)	(2,764)	(2,556)
Other, net	(89)	(144)	(72)
Net cash used for financing activities	(7,616)	(4,527)	(5,328)
Net change in cash and cash equivalents	444	1,646	742
Cash and cash equivalents at beginning of year	3,160	1,514	772
Cash and cash equivalents at end of year	$ 3,604	$ 3,160	$ 1,514