TRANSITION PERIOD COMPARATIVE DATA (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2021

Condensed Financial Information Disclosure [Abstract]

Schedule of Certain Comparative Financial Information for Transition Period (Unaudited)

	Fiscal Year Ended		Four Quarters Ended		Two Quarters Ended
(In millions, except per share amounts)	January 1, 2021		January 3, 2020		January 3, 2020		December 28, 2018
			(Unaudited)				(Unaudited)
Revenue from product sales and services	$	18,194	$	12,856	$	9,263	$	3,208
Cost of product sales and services	(12,886)		(9,088)		(6,726)		(2,105)
Engineering, selling and administrative expenses	(3,315)		(2,540)		(1,881)		(583)
Business divestiture-related gains (losses)	(51)		229		229		—
Impairment of goodwill and other assets	(767)		(46)		(46)		—
Non-operating income	401		286		192		94
Interest expense, net	(254)		(204)		(123)		(86)
Income from continuing operations before income taxes	1,322		1,493		908		528
Income taxes	(234)		(146)		(73)		(87)
Income from continuing operations	1,088		1,347		835		441
Discontinued operations, net of income taxes	(2)		(2)		(1)		(3)
Net income	1,086		1,345		834		438
Noncontrolling interests, net of income taxes	33		(12)		(12)		—
Net income attributable to L3Harris Technologies, Inc.	$	1,119	$	1,333	$	822	$	438
Net income per common share attributable to L3Harris Technologies, Inc. common shareholders
Net income per common share
Basic
Continuing operations	$	5.24	$	8.04	$	3.72	$	3.74
Discontinued operations	(0.01)		—		—		(0.03)
	$	5.23	$	8.04	$	3.72	$	3.71
Diluted
Continuing operations	$	5.19	$	7.90	$	3.68	$	3.66
Discontinued operations	—		(0.01)		(0.01)		(0.02)
	$	5.19	$	7.89	$	3.67	$	3.64
Basic weighted average common shares outstanding	214.0		166.0		221.2		117.8
Diluted weighted average common shares outstanding	215.9		169.0		223.7		120.3