Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating activities
Net earnings	$ 944	$ 842
Adjustments to reconcile to net cash used in operating activities:
Depreciation and amortization	299	298
Stock-based compensation	20	19
Deferred income taxes	(103)	(205)
Net periodic pension and OPB income	(113)	(76)
Pension and OPB contributions	(36)	(40)
Changes in assets and liabilities:
Accounts receivable, net	(378)	(550)
Unbilled receivables, net	(757)	(232)
Inventoried costs, net	(262)	(137)
Prepaid expenses and other assets	49	(54)
Accounts payable and other liabilities	(581)	(1,128)
Income taxes payable, net	219	576
Other operating activities, net	(7)	(15)
Net cash used in operating activities	(706)	(702)
Investing activities
Capital expenditures	(270)	(309)
Other investing activities, net	1	0
Net cash used in investing activities	(269)	(309)
Financing activities
Net proceeds from issuance of long-term debt	2,495	1,995
Common stock repurchases	(1,190)	(723)
Cash dividends paid	(283)	(270)
Payments of employee taxes withheld from share-based awards	(55)	(47)
Other financing activities, net	(40)	(26)
Net cash provided by financing activities	927	929
Decrease in cash and cash equivalents	(48)	(82)
Cash and cash equivalents, beginning of year	3,109	2,577
Cash and Cash Equivalents, at Carrying Value	$ 3,061	$ 2,495