Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Net Sales	$ 9,978	$ 9,112	$ 8,171
Direct
Disaggregation of Revenue [Line Items]
Net Sales	7,015	6,425	5,989
Indirect
Disaggregation of Revenue [Line Items]
Net Sales	2,963	2,687	2,182
LMR Communications
Disaggregation of Revenue [Line Items]
Net Sales	7,526	6,987	6,408
Video
Disaggregation of Revenue [Line Items]
Net Sales	1,726	1,523	1,226
Command Center
Disaggregation of Revenue [Line Items]
Net Sales	726	602	537
North America
Disaggregation of Revenue [Line Items]
Net Sales	6,932	6,374	5,561
International
Disaggregation of Revenue [Line Items]
Net Sales	3,046	2,738	2,610
Products and Systems Integration
Disaggregation of Revenue [Line Items]
Net Sales	6,242	5,728	5,033
Products and Systems Integration | Direct
Disaggregation of Revenue [Line Items]
Net Sales	3,619	3,368	3,147
Products and Systems Integration | Indirect
Disaggregation of Revenue [Line Items]
Net Sales	2,623	2,360	1,886
Products and Systems Integration | LMR Communications
Disaggregation of Revenue [Line Items]
Net Sales	5,127	4,713	4,203
Products and Systems Integration | Video
Disaggregation of Revenue [Line Items]
Net Sales	1,115	1,015	830
Products and Systems Integration | Command Center
Disaggregation of Revenue [Line Items]
Net Sales	0	0	0
Products and Systems Integration | North America
Disaggregation of Revenue [Line Items]
Net Sales	4,507	4,286	3,723
Products and Systems Integration | International
Disaggregation of Revenue [Line Items]
Net Sales	1,735	1,442	1,310
Software and Services
Disaggregation of Revenue [Line Items]
Net Sales	3,736	3,384	3,138
Software and Services | Direct
Disaggregation of Revenue [Line Items]
Net Sales	3,396	3,057	2,842
Software and Services | Indirect
Disaggregation of Revenue [Line Items]
Net Sales	340	327	296
Software and Services | LMR Communications
Disaggregation of Revenue [Line Items]
Net Sales	2,399	2,274	2,205
Software and Services | Video
Disaggregation of Revenue [Line Items]
Net Sales	611	508	396
Software and Services | Command Center
Disaggregation of Revenue [Line Items]
Net Sales	726	602	537
Software and Services | North America
Disaggregation of Revenue [Line Items]
Net Sales	2,425	2,088	1,838
Software and Services | International
Disaggregation of Revenue [Line Items]
Net Sales	$ 1,311	$ 1,296	$ 1,300