CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2022	Dec. 31, 2021	Jan. 01, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 1,061	$ 1,842	$ 1,086
Other comprehensive income:
Foreign currency translation (loss) gain, net of income taxes	(119)	(63)	16
Net unrealized loss on hedging derivatives, net of income taxes	(8)	(3)	(31)
Net unrecognized (loss) gain on postretirement obligations, net of income taxes	(26)	758	(313)
Other comprehensive (loss) income, recognized during the period	(153)	692	(328)
Reclassification adjustments for losses (gains) included in net income	11	1	(3)
Other comprehensive loss, net of income taxes	(142)	693	(331)
Total comprehensive income	919	2,535	755
Comprehensive loss attributable to noncontrolling interests	1	4	33
Total comprehensive income attributable to L3Harris Technologies, Inc.	$ 920	$ 2,539	$ 788