CONSOLIDATED STATEMENT OF INCOME - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jan. 03, 2020	Jan. 01, 2021	Jun. 28, 2019	Jun. 29, 2018
Revenue from product sales and services
Revenue	$ 9,263	$ 18,194	$ 6,801	$ 6,168
Cost of product sales and services
Cost of revenue	(6,726)	(12,886)	(4,467)	(4,066)
Engineering, selling and administrative expenses	(1,881)	(3,315)	(1,242)	(1,182)
Business divestiture-related (losses) gains	229	(51)	0	0
Impairment of goodwill and other assets	(46)	(767)	0	0
Non-operating income	192	401	188	156
Interest income	12	16	2	2
Interest expense	(135)	(270)	(169)	(170)
Income from continuing operations before income taxes	908	1,322	1,113	908
Income taxes	(73)	(234)	(160)	(206)
Income from continuing operations	835	1,088	953	702
Discontinued operations, net of income taxes	(1)	(2)	(4)	(3)
Net income	834	1,086	949	699
Noncontrolling interests, net of income taxes	(12)	33	0	0
Net income attributable to L3Harris Technologies, Inc.	822	1,119	949	699
Amount attributable to L3Harris Technologies, Inc. common shareholders
Income from continuing operations	823	1,121	953	702
Discontinued operations, net of income taxes	$ (1)	$ (2)	$ (4)	$ (3)
Basic
Continuing operations (in dollars per share)	$ 3.72	$ 5.24	$ 8.06	$ 5.90
Discontinued operations (in dollars per share)	0	(0.01)	(0.03)	(0.02)
Total basic net income per common share (in dollars per share)	3.72	5.23	8.03	5.88
Diluted
Continuing operations (in dollars per share)	3.68	5.19	7.89	5.78
Discontinued operations (in dollars per share)	(0.01)	0	(0.03)	(0.02)
Diluted (in dollars per share)	$ 3.67	$ 5.19	$ 7.86	$ 5.76
Product
Revenue from product sales and services
Revenue	$ 6,908	$ 13,581	$ 5,638	$ 5,038
Cost of product sales and services
Cost of revenue	(4,996)	(9,464)	(3,615)	(3,239)
Services
Revenue from product sales and services
Revenue	2,355	4,613	1,163	1,130
Cost of product sales and services
Cost of revenue	$ (1,730)	$ (3,422)	$ (852)	$ (827)