CONSOLIDATED STATEMENT OF INCOME - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jan. 03, 2020	Dec. 31, 2021	Jan. 01, 2021	Jun. 28, 2019
Revenue from product sales and services
Revenue	$ 9,263	$ 17,814	$ 18,194	$ 6,801
Cost of product sales and services
Cost of revenue	(6,726)	(12,438)	(12,886)	(4,467)
Engineering, selling and administrative expenses	(1,881)	(3,280)	(3,315)	(1,242)
Business divestiture-related gains (losses)	229	220	(51)	0
Impairment of goodwill and other assets	(46)	(207)	(767)	0
Non-operating income	192	439	401	188
Net interest expense	(123)	(265)	(254)	(167)
Income from continuing operations before income taxes	908	2,283	1,322	1,113
Income taxes	(73)	(440)	(234)	(160)
Income from continuing operations	835	1,843	1,088	953
Discontinued operations, net of income taxes	(1)	(1)	(2)	(4)
Net income	834	1,842	1,086	949
Noncontrolling interests, net of income taxes	(12)	4	33	0
Net income attributable to L3Harris Technologies, Inc.	822	1,846	1,119	949
Amount attributable to L3Harris Technologies, Inc. common shareholders
Income from continuing operations	823	1,847	1,121	953
Discontinued operations, net of income taxes	(1)	(1)	(2)	(4)
Net income attributable to L3Harris Technologies, Inc.	$ 822	$ 1,846	$ 1,119	$ 949
Basic
Continuing operations (in dollars per share)	$ 3.72	$ 9.17	$ 5.24	$ 8.06
Discontinued operations (in dollars per share)	0	0	(0.01)	(0.03)
Total basic net income per common share (in dollars per share)	3.72	9.17	5.23	8.03
Diluted
Continuing operations (in dollars per share)	3.68	9.09	5.19	7.89
Discontinued operations (in dollars per share)	(0.01)	0	0	(0.03)
Diluted (in dollars per share)	$ 3.67	$ 9.09	$ 5.19	$ 7.86
Product
Revenue from product sales and services
Revenue	$ 6,908	$ 13,156	$ 13,581	$ 5,638
Cost of product sales and services
Cost of revenue	(4,996)	(9,007)	(9,464)	(3,615)
Services
Revenue from product sales and services
Revenue	2,355	4,658	4,613	1,163
Cost of product sales and services
Cost of revenue	$ (1,730)	$ (3,431)	$ (3,422)	$ (852)