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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Disaggregation of Revenue [Line Items]
Net sales	$ 2,403	$ 2,140	$ 4,574	$ 4,032
Direct
Disaggregation of Revenue [Line Items]
Net sales	1,671	1,489	3,189	2,847
Indirect
Disaggregation of Revenue [Line Items]
Net sales	732	651	1,385	1,185
LMR Communications
Disaggregation of Revenue [Line Items]
Net sales	1,776	1,608	3,433	3,063
Video
Disaggregation of Revenue [Line Items]
Net sales	433	370	792	677
Command Center
Disaggregation of Revenue [Line Items]
Net sales	194	162	349	292
North America
Disaggregation of Revenue [Line Items]
Net sales	1,641	1,484	3,133	2,788
International
Disaggregation of Revenue [Line Items]
Net sales	762	656	1,441	1,244
Products and Systems Integration
Disaggregation of Revenue [Line Items]
Net sales	1,437	1,285	2,740	2,388
Products and Systems Integration | Direct
Disaggregation of Revenue [Line Items]
Net sales	796	711	1,519	1,367
Products and Systems Integration | Indirect
Disaggregation of Revenue [Line Items]
Net sales	641	574	1,221	1,021
Products and Systems Integration | LMR Communications
Disaggregation of Revenue [Line Items]
Net sales	1,150	1,038	2,230	1,947
Products and Systems Integration | Video
Disaggregation of Revenue [Line Items]
Net sales	287	247	510	441
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	1,025	963	1,975	1,794
Products and Systems Integration | International
Disaggregation of Revenue [Line Items]
Net sales	412	322	765	594
Software and Services
Disaggregation of Revenue [Line Items]
Net sales	966	855	1,834	1,644
Software and Services | Direct
Disaggregation of Revenue [Line Items]
Net sales	875	778	1,670	1,480
Software and Services | Indirect
Disaggregation of Revenue [Line Items]
Net sales	91	77	164	164
Software and Services | LMR Communications
Disaggregation of Revenue [Line Items]
Net sales	626	570	1,203	1,116
Software and Services | Video
Disaggregation of Revenue [Line Items]
Net sales	146	123	282	236
Software and Services | Command Center
Disaggregation of Revenue [Line Items]
Net sales	194	162	349	292
Software and Services | North America
Disaggregation of Revenue [Line Items]
Net sales	616	521	1,158	994
Software and Services | International
Disaggregation of Revenue [Line Items]
Net sales	$ 350	$ 334	$ 676	$ 650

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