CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 27, 2024	Sep. 29, 2023
Operating Activities
Net income	$ 1,056	$ 1,072
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	963	816
Share-based compensation	76	67
Pension and other postretirement benefit plan income	(215)	(209)
Share-based matching contributions under defined contribution plans	199	172
Deferred income taxes	220	(277)
(Increase) decrease in:
Receivables, net	163	53
Contract assets	(372)	(136)
Inventories, net	46	(195)
Other current assets	(32)	(87)
Increase (decrease) in:
Accounts payable	(45)	(18)
Contract liabilities	(150)	202
Compensation and benefits	(145)	(55)
Other current liabilities	59	(27)
Income taxes	(258)	15
Other operating activities	(135)	(86)
Net cash provided by operating activities	1,430	1,307
Investing Activities
Net cash paid for acquired businesses	0	(6,688)
Additions to property, plant and equipment	(290)	(312)
Proceeds from sales of businesses, net	158	71
Other investing activities	(19)	(9)
Net cash used in investing activities	(151)	(6,938)
Financing Activities
Proceeds from borrowings, net of issuance cost	2,826	7,568
Repayments of borrowings	(2,609)	(3,159)
Change in commercial paper, maturities under 90 days, net	93	1,330
Proceeds from commercial paper, maturities over 90 days	688	701
Repayments of commercial paper, maturities over 90 days	(1,205)	0
Proceeds from exercises of employee stock options	111	18
Repurchases of common stock	(512)	(518)
Dividends paid	(665)	(652)
Other financing activities	(36)	(34)
Net cash (used in) provided by financing activities	(1,309)	5,254
Effect of exchange rate changes on cash and cash equivalents	9	(4)
Net decrease in cash and cash equivalents	(21)	(381)
Cash and cash equivalents, beginning of period	560	880
Cash and cash equivalents, end of period	$ 539	$ 499