CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Oct. 02, 2020	Sep. 27, 2019
Operating Activities
Net income	$ 902	$ 946
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	768	330
Share-based compensation	71	124
Share-based matching contributions under defined contribution plans	168	90
Qualified pension plan contributions	(7)	(328)
Pension and other postretirement benefit plan income	(241)	(132)
Impairment of goodwill and other assets	394	0
Business divestiture-related losses (gains)	62	(229)
Gain on sale of asset group	0	(12)
Deferred income taxes	(142)	41
(Increase) decrease in:
Accounts receivable	(35)	50
Contract assets	(98)	(88)
Inventories	139	88
Increase (decrease) in:
Accounts payable	(2)	17
Contract liabilities	(94)	10
Compensation and benefits	(42)	70
Income taxes	86	(124)
Other accrued items	102	(3)
Other	61	(53)
Net cash provided by operating activities	2,092	797
Investing Activities
Net additions of property, plant and equipment	(194)	(178)
Proceeds from sales of businesses, net	1,002	346
Net cash acquired in L3Harris Merger	0	1,132
Proceeds from sale of asset group	0	20
Other investing activities	(10)	2
Net cash provided by investing activities	798	1,322
Financing Activities
Net proceeds from borrowings	249	4
Repayments of borrowings	(257)	(405)
Proceeds from exercises of employee stock options	39	127
Repurchases of common stock	(1,850)	(750)
Cash dividends	(546)	(334)
Tax withholding payments associated with vested share-based awards	(2)	(88)
Other financing activities	(6)	(7)
Net cash used in financing activities	(2,373)	(1,453)
Effect of exchange rate changes on cash and cash equivalents	0	(8)
Net increase in cash and cash equivalents	517	658
Cash and cash equivalents, beginning of year	824	343
Cash and cash equivalents, end of quarter	$ 1,341	$ 1,001