CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS (Unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 28, 2024	Jun. 30, 2023	Jun. 28, 2024	Jun. 30, 2023
Income Statement [Abstract]
Revenue		$ 5,299	$ 4,693	$ 10,510	$ 9,164
Cost of revenue		(3,939)	(3,506)	(7,802)	(6,811)
General and administrative expenses		(884)	(787)	(1,854)	(1,560)
Operating income		476	400	854	793
Non-service FAS pension income and other, net	[1]	86	83	174	165
Interest expense, net		(172)	(111)	(348)	(213)
Income before income taxes		390	372	680	745
Income taxes		(23)	(21)	(28)	(55)
Net income		367	351	652	690
Noncontrolling interests, net of income taxes		(1)	(2)	(3)	(4)
Net income attributable to L3Harris Technologies, Inc.		$ 366	$ 349	$ 649	$ 686
Net income per common share attributable to L3Harris Technologies, Inc. common shareholders
Basic (in dollars per share)		$ 1.93	$ 1.84	$ 3.42	$ 3.61
Diluted (in dollars per share)		$ 1.92	$ 1.83	$ 3.40	$ 3.60
Basic weighted-average common shares outstanding (in shares)		189.7	189.2	189.8	189.7
Diluted weighted-average common shares outstanding (in shares)		190.6	190.1	190.8	190.7

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