Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 26, 2023
Operating activities
Net earnings	$ 1,545	$ 1,689
Adjustments to reconcile net earnings to net cash provided by operating activities
Depreciation and amortization	351	325
Stock-based compensation	61	57
Deferred income taxes	(77)	(117)
Changes in assets and liabilities
Receivables, net	(125)	(78)
Contract assets	(867)	(871)
Inventories	(146)	(383)
Accounts payable	1,301	1,217
Contract liabilities	(445)	(152)
Income taxes	341	414
Qualified defined benefit pension plans	(1)	(94)
Other, net	(303)	(443)
Net cash provided by operating activities	1,635	1,564
Investing activities
Capital expenditures	(378)	(294)
Other, net	6	35
Net cash used for investing activities	(372)	(259)
Financing activities
Issuance of long-term debt, net of related costs	1,980	0
Repurchases of common stock	(1,000)	(500)
Dividends paid	(780)	(784)
Other, net	(115)	(128)
Net cash provided by (used for) financing activities	85	(1,412)
Net change in cash and cash equivalents	1,348	(107)
Cash and cash equivalents at beginning of period		2,547
Cash and cash equivalents at end of period	$ 2,790	$ 2,440