CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS (Unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 27, 2024	Sep. 29, 2023	Sep. 27, 2024	Sep. 29, 2023
Income Statement [Abstract]
Revenue		$ 5,292	$ 4,915	$ 15,802	$ 14,079
Cost of revenue		(3,873)	(3,608)	(11,675)	(10,419)
General and administrative expenses		(924)	(828)	(2,778)	(2,388)
Operating income		495	479	1,349	1,272
Non-service FAS pension income and other, net	[1]	101	80	275	245
Interest expense, net		(166)	(159)	(514)	(372)
Income before income taxes		430	400	1,110	1,145
Income taxes		(26)	(18)	(54)	(73)
Net income		404	382	1,056	1,072
Noncontrolling interests, net of income taxes		(4)	1	(7)	(3)
Net income attributable to L3Harris Technologies, Inc.		$ 400	$ 383	$ 1,049	$ 1,069
Net income per common share attributable to L3Harris Technologies, Inc. common shareholders
Basic (in dollars per share)		$ 2.11	$ 2.02	$ 5.53	$ 5.64
Diluted (in dollars per share)		$ 2.10	$ 2.02	$ 5.50	$ 5.61
Basic weighted-average common shares outstanding (in shares)		189.6	189.3	189.7	189.6
Diluted weighted-average common shares outstanding (in shares)		190.5	190.1	190.7	190.6

[1] “FAS” is defined as Financial Accounting Standards.