CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Apr. 01, 2022	Apr. 02, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 475	$ 466
Other comprehensive income (loss):
Foreign currency translation loss, net of income taxes	(3)	(18)
Net unrealized gain on hedging derivatives, net of income taxes	5	5
Other comprehensive income (loss), recognized during the period	2	(13)
Reclassification adjustments for gains included in net income	(6)	(2)
Other comprehensive loss, net of income taxes	(4)	(15)
Total comprehensive income	471	451
Comprehensive loss attributable to noncontrolling interests	0	2
Total comprehensive income attributable to L3Harris Technologies, Inc.	$ 471	$ 453