Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating activities
Net earnings	$ 2,816	$ 4,295
Adjustments to reconcile to net cash provided by operating activities:
Depreciation and amortization	960	908
Stock-based compensation	72	71
Deferred income taxes	(438)	(105)
Gain on sale of business	0	(1,980)
Net periodic pension and OPB income	(895)	(818)
Pension and OPB contributions	(106)	(108)
Changes in assets and liabilities:
Accounts receivable, net	(469)	(133)
Unbilled receivables, net	(1,038)	(596)
Inventoried costs, net	(171)	(113)
Prepaid expenses and other assets	(64)	6
Accounts payable and other liabilities	(57)	49
Income taxes payable, net	(56)	663
Other operating activities, net	96	(14)
Net cash provided by operating activities	650	2,125
Investing activities
Divestiture of IT services business	0	3,400
Capital expenditures	(803)	(682)
Proceeds from sale of equipment to a customer	100	84
Other investing activities, net	40	(3)
Net cash (used in) provided by investing activities	(663)	2,799
Financing activities
Payments of long-term debt	0	(2,236)
Common stock repurchases	(1,011)	(2,724)
Cash dividends paid	(786)	(737)
Payments of employee taxes withheld from share-based awards	(50)	(33)
Other financing activities, net	(4)	(46)
Net cash used in financing activities	(1,851)	(5,776)
Decrease in cash and cash equivalents	(1,864)	(852)
Cash and cash equivalents, beginning of year	3,530	4,907
Cash and cash equivalents, end of period	$ 1,666	$ 4,055