Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating activities
Net earnings	$ 2,591	$ 2,816
Adjustments to reconcile to net cash provided by operating activities:
Depreciation and amortization	938	960
Stock-based compensation	64	72
Deferred income taxes	(298)	(438)
Net periodic pension and OPB income	(230)	(895)
Pension and OPB contributions	(108)	(106)
Changes in assets and liabilities:
Accounts receivable, net	(256)	(469)
Unbilled receivables, net	(287)	(1,038)
Inventoried costs, net	(396)	(171)
Prepaid expenses and other assets	(127)	(64)
Accounts payable and other liabilities	(443)	(57)
Income taxes payable, net	40	(56)
Other operating activities, net	(43)	96
Net cash provided by operating activities	1,445	650
Investing activities
Capital expenditures	(972)	(803)
Proceeds from sale of equipment to a customer	0	100
Proceeds from Sale, Maturity and Collection of Investments	157	0
Other investing activities, net	3	40
Net cash used in investing activities	(812)	(663)
Financing activities
Net proceeds from issuance of long-term debt	1,995	0
Payments of long-term debt	(1,050)	0
Common stock repurchases	(1,154)	(1,011)
Cash dividends paid	(834)	(786)
Payments of employee taxes withheld from share-based awards	(51)	(50)
Other financing activities, net	(34)	(4)
Net cash used in financing activities	(1,128)	(1,851)
Decrease in cash and cash equivalents	(495)	(1,864)
Cash and cash equivalents, beginning of year	2,577	3,530
Cash and Cash Equivalents, at Carrying Value	$ 2,082	$ 1,666