CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Apr. 01, 2022
Income Statement [Abstract]
Revenue from product sales and services	$ 4,471	$ 4,103
Cost of product sales and services	(3,305)	(2,860)
Engineering, selling and administrative expenses	(773)	(745)
Non-operating income, net	82	106
Interest expense, net	(102)	(68)
Income before income taxes	373	536
Income taxes	(34)	(61)
Net income	339	475
Noncontrolling interests, net of income taxes	(2)	0
Net income attributable to L3Harris Technologies, Inc.	$ 337	$ 475
Net income per common share attributable to L3Harris Technologies, Inc. common shareholders
Basic (in dollars per share)	$ 1.77	$ 2.46
Diluted (in dollars per share)	$ 1.76	$ 2.44
Basic weighted average common shares outstanding (in shares)	190.2	193.2
Diluted weighted average common shares outstanding (in shares)	191.2	195.1