Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating activities
Net earnings	$ 842	$ 955
Adjustments to reconcile to net cash used in operating activities:
Depreciation and amortization	298	303
Stock-based compensation	19	18
Deferred income taxes	(205)	(201)
Net periodic pension and OPB income	(76)	(298)
Pension and OPB contributions	(40)	(36)
Changes in assets and liabilities:
Accounts receivable, net	(550)	(246)
Unbilled receivables, net	(232)	(626)
Inventoried costs, net	(137)	(27)
Prepaid expenses and other assets	(54)	16
Accounts payable and other liabilities	(1,128)	(732)
Income taxes payable, net	576	361
Other operating activities, net	(15)	25
Net cash used in operating activities	(702)	(488)
Investing activities
Capital expenditures	(309)	(244)
Other investing activities, net	0	(5)
Net cash used in investing activities	(309)	(249)
Financing activities
Net proceeds from issuance of long-term debt	1,995	0
Common stock repurchases	(723)	(318)
Cash dividends paid	(270)	(251)
Payments of employee taxes withheld from share-based awards	(47)	(48)
Other financing activities, net	(26)	(2)
Net cash provided by (used in) financing activities	929	(619)
Decrease in cash and cash equivalents	(82)	(1,356)
Cash and cash equivalents, beginning of year	2,577	3,530
Cash and Cash Equivalents, at Carrying Value	$ 2,495	$ 2,174