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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2023	Oct. 01, 2022
Disaggregation of Revenue [Line Items]
Net sales	$ 2,556	$ 2,373	$ 7,129	$ 6,405
Direct
Disaggregation of Revenue [Line Items]
Net sales	1,799	1,671	4,988	4,530
Indirect
Disaggregation of Revenue [Line Items]
Net sales	757	702	2,141	1,875
LMR Communications
Disaggregation of Revenue [Line Items]
Net sales	1,917	1,812	5,349	4,874
Video
Disaggregation of Revenue [Line Items]
Net sales	453	419	1,245	1,096
Command Center
Disaggregation of Revenue [Line Items]
Net sales	186	142	535	435
North America
Disaggregation of Revenue [Line Items]
Net sales	1,783	1,687	4,916	4,475
International
Disaggregation of Revenue [Line Items]
Net sales	773	686	2,213	1,930
Products and Systems Integration
Disaggregation of Revenue [Line Items]
Net sales	1,612	1,529	4,352	3,918
Products and Systems Integration | Direct
Disaggregation of Revenue [Line Items]
Net sales	940	902	2,459	2,271
Products and Systems Integration | Indirect
Disaggregation of Revenue [Line Items]
Net sales	672	627	1,893	1,647
Products and Systems Integration | LMR Communications
Disaggregation of Revenue [Line Items]
Net sales	1,312	1,243	3,542	3,190
Products and Systems Integration | Video
Disaggregation of Revenue [Line Items]
Net sales	300	286	810	728
Products and Systems Integration | Command Center
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Products and Systems Integration | North America
Disaggregation of Revenue [Line Items]
Net sales	1,155	1,166	3,130	2,961
Products and Systems Integration | International
Disaggregation of Revenue [Line Items]
Net sales	457	363	1,222	957
Software and Services
Disaggregation of Revenue [Line Items]
Net sales	944	844	2,777	2,487
Software and Services | Direct
Disaggregation of Revenue [Line Items]
Net sales	859	769	2,529	2,259
Software and Services | Indirect
Disaggregation of Revenue [Line Items]
Net sales	85	75	248	228
Software and Services | LMR Communications
Disaggregation of Revenue [Line Items]
Net sales	605	569	1,807	1,684
Software and Services | Video
Disaggregation of Revenue [Line Items]
Net sales	153	133	435	368
Software and Services | Command Center
Disaggregation of Revenue [Line Items]
Net sales	186	142	535	435
Software and Services | North America
Disaggregation of Revenue [Line Items]
Net sales	628	521	1,786	1,514
Software and Services | International
Disaggregation of Revenue [Line Items]
Net sales	$ 316	$ 323	$ 991	$ 973

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