Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 04, 2026	Mar. 29, 2025
Disaggregation of Revenue [Line Items]
Net sales	$ 2,714	$ 2,528
Direct
Disaggregation of Revenue [Line Items]
Net sales	1,997	1,923
Indirect
Disaggregation of Revenue [Line Items]
Net sales	717	605
Mission Critical Networks (MCN)
Disaggregation of Revenue [Line Items]
Net sales	1,968	1,901
Video
Disaggregation of Revenue [Line Items]
Net sales	510	441
Command Center
Disaggregation of Revenue [Line Items]
Net sales	236	186
North America
Disaggregation of Revenue [Line Items]
Net sales	1,857	1,852
International
Disaggregation of Revenue [Line Items]
Net sales	857	676
Products and Systems Integration
Disaggregation of Revenue [Line Items]
Net sales	1,559	1,546
Products and Systems Integration | Direct
Disaggregation of Revenue [Line Items]
Net sales	944	1,016
Products and Systems Integration | Indirect
Disaggregation of Revenue [Line Items]
Net sales	615	530
Products and Systems Integration | Mission Critical Networks (MCN)
Disaggregation of Revenue [Line Items]
Net sales	1,288	1,315
Products and Systems Integration | Video
Disaggregation of Revenue [Line Items]
Net sales	271	231
Products and Systems Integration | Command Center
Disaggregation of Revenue [Line Items]
Net sales	0	0
Products and Systems Integration | North America
Disaggregation of Revenue [Line Items]
Net sales	1,064	1,178
Products and Systems Integration | International
Disaggregation of Revenue [Line Items]
Net sales	495	368
Software and Services
Disaggregation of Revenue [Line Items]
Net sales	1,155	982
Software and Services | Direct
Disaggregation of Revenue [Line Items]
Net sales	1,053	907
Software and Services | Indirect
Disaggregation of Revenue [Line Items]
Net sales	102	75
Software and Services | Mission Critical Networks (MCN)
Disaggregation of Revenue [Line Items]
Net sales	680	586
Software and Services | Video
Disaggregation of Revenue [Line Items]
Net sales	239	210
Software and Services | Command Center
Disaggregation of Revenue [Line Items]
Net sales	236	186
Software and Services | North America
Disaggregation of Revenue [Line Items]
Net sales	793	674
Software and Services | International
Disaggregation of Revenue [Line Items]
Net sales	$ 362	$ 308