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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Net sales	$ 2,790	$ 2,556	$ 7,806	$ 7,129
Direct
Disaggregation of Revenue [Line Items]
Net sales	2,025	1,799	5,586	4,988
Indirect
Disaggregation of Revenue [Line Items]
Net sales	765	757	2,220	2,141
LMR Communications
Disaggregation of Revenue [Line Items]
Net sales	2,088	1,917	5,851	5,349
Video
Disaggregation of Revenue [Line Items]
Net sales	500	453	1,374	1,245
Command Center
Disaggregation of Revenue [Line Items]
Net sales	202	186	581	535
North America
Disaggregation of Revenue [Line Items]
Net sales	2,007	1,783	5,616	4,916
International
Disaggregation of Revenue [Line Items]
Net sales	783	773	2,190	2,213
Products and Systems Integration
Disaggregation of Revenue [Line Items]
Net sales	1,784	1,612	4,933	4,352
Products and Systems Integration | Direct
Disaggregation of Revenue [Line Items]
Net sales	1,108	940	2,969	2,459
Products and Systems Integration | Indirect
Disaggregation of Revenue [Line Items]
Net sales	676	672	1,964	1,893
Products and Systems Integration | LMR Communications
Disaggregation of Revenue [Line Items]
Net sales	1,492	1,312	4,112	3,542
Products and Systems Integration | Video
Disaggregation of Revenue [Line Items]
Net sales	292	300	821	810
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	1,304	1,155	3,631	3,130
Products and Systems Integration | International
Disaggregation of Revenue [Line Items]
Net sales	480	457	1,302	1,222
Software and Services
Disaggregation of Revenue [Line Items]
Net sales	1,006	944	2,873	2,777
Software and Services | Direct
Disaggregation of Revenue [Line Items]
Net sales	917	859	2,617	2,529
Software and Services | Indirect
Disaggregation of Revenue [Line Items]
Net sales	89	85	256	248
Software and Services | LMR Communications
Disaggregation of Revenue [Line Items]
Net sales	596	605	1,739	1,807
Software and Services | Video
Disaggregation of Revenue [Line Items]
Net sales	208	153	553	435
Software and Services | Command Center
Disaggregation of Revenue [Line Items]
Net sales	202	186	581	535
Software and Services | North America
Disaggregation of Revenue [Line Items]
Net sales	703	628	1,985	1,786
Software and Services | International
Disaggregation of Revenue [Line Items]
Net sales	$ 303	$ 316	$ 888	$ 991

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