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Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 3 Months Ended
Mar. 26, 2023
Mar. 27, 2022
Operating activities    
Net earnings $ 1,689 $ 1,733
Adjustments to reconcile net earnings to net cash provided by operating activities    
Depreciation and amortization 325 329
Stock-based compensation 57 54
Deferred income taxes (117) (31)
Changes in assets and liabilities    
Receivables, net (78) (564)
Contract assets (871) (1,551)
Inventories (383) (163)
Accounts payable 1,217 1,829
Contract liabilities (152) (205)
Income taxes 414 317
Qualified defined benefit pension plans (94) (116)
Other, net (443) (222)
Net cash provided by operating activities 1,564 1,410
Investing activities    
Capital expenditures (294) (268)
Other, net 35 17
Net cash used for investing activities (259) (251)
Financing activities    
Repurchases of common stock (500) (2,000)
Dividends paid (784) (767)
Other, net (128) (113)
Net cash used for financing activities (1,412) (2,880)
Net change in cash and cash equivalents (107) (1,721)
Cash and cash equivalents at beginning of period 2,547 3,604
Cash and cash equivalents at end of period $ 2,440 $ 1,883