Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 27, 2022	Mar. 28, 2021
Operating activities
Net earnings	$ 1,733	$ 1,837
Adjustments to reconcile net earnings to net cash provided by operating activities
Depreciation and amortization	329	336
Stock-based compensation	54	47
Deferred income taxes	(411)	63
Severance and restructuring charges	0	36
Changes in assets and liabilities
Receivables, net	(564)	(236)
Contract assets	(1,551)	(1,363)
Inventories	(163)	289
Accounts payable	1,829	1,023
Contract liabilities	(205)	(290)
Income taxes	697	301
Qualified defined benefit pension plans	(116)	(66)
Other, net	(222)	(229)
Net cash provided by operating activities	1,410	1,748
Investing activities
Capital expenditures	(268)	(281)
Other, net	17	112
Net cash used for investing activities	(251)	(169)
Financing activities
Repurchases of common stock	(2,000)	(1,000)
Dividends paid	(767)	(739)
Other, net	(113)	(67)
Net cash used for financing activities	(2,880)	(1,806)
Net change in cash and cash equivalents	(1,721)	(227)
Cash and cash equivalents at beginning of period	3,604	3,160
Cash and cash equivalents at end of period	$ 1,883	$ 2,933