CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2024	Jun. 30, 2023	Jun. 28, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 367	$ 351	$ 652	$ 690
Other comprehensive income (loss):
Foreign currency translation income (loss), net of income taxes	5	28	(21)	35
Net unrealized income (loss) on hedging derivatives, net of income taxes	0	4	(3)	9
Net unrecognized gains on postretirement obligations, net of income taxes	3	0	3	0
Other comprehensive income (loss) recognized during the period	8	32	(21)	44
Reclassification adjustments for gains included in net income	(8)	(7)	(15)	(19)
Other comprehensive income (loss), net of income taxes	0	25	(36)	25
Total comprehensive income	367	376	616	715
Comprehensive income attributable to noncontrolling interest	(1)	(2)	(3)	(4)
Total comprehensive income attributable to L3Harris Technologies, Inc.	$ 366	$ 374	$ 613	$ 711