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Summary of Significant Accounting Policies - Recent Acquisitions (Details) - USD ($) $ in Millions	Dec. 14, 2022	Oct. 25, 2022	Aug. 08, 2022	May 12, 2022	Apr. 19, 2022	Mar. 23, 2022	Mar. 03, 2022	Dec. 16, 2021	Oct. 29, 2021	Jul. 15, 2021	Aug. 28, 2020	Jul. 31, 2020	Jun. 16, 2020	Apr. 30, 2020	Mar. 03, 2020
Rave Mobile
Business Acquisition [Line Items]
Cash paid for acquisition	$ 553
Share-based compensation fair value	$ 2
Share-based compensation arrangement, award requisite service period	2 years
Futurecom Systems Group, ULC
Business Acquisition [Line Items]
Cash paid for acquisition		$ 30
Barrett Communications Pty Ltd
Business Acquisition [Line Items]
Cash paid for acquisition			$ 18
Videotec S.p.A.
Business Acquisition [Line Items]
Cash paid for acquisition				$ 23
Share-based compensation fair value				$ 4
Share-based compensation arrangement, award requisite service period				1 year
Calipsa, Inc
Business Acquisition [Line Items]
Cash paid for acquisition					$ 39
Share-based compensation fair value					$ 4
Share-based compensation arrangement, award requisite service period					2 years
TETRA Ireland Communications Limited
Business Acquisition [Line Items]
Cash paid for acquisition						$ 120
Ava Security Limited
Business Acquisition [Line Items]
Cash paid for acquisition							$ 388
Share-based compensation fair value							$ 7
Share-based compensation arrangement, award requisite service period							2 years
911 Datamaster
Business Acquisition [Line Items]
Cash paid for acquisition								$ 35
Share-based compensation fair value								$ 3
Average service period								2 years
Envysion
Business Acquisition [Line Items]
Cash paid for acquisition									$ 124
Share-based compensation fair value									$ 1
Average service period									1 year
Openpath
Business Acquisition [Line Items]
Cash paid for acquisition										$ 298
Share-based compensation fair value										$ 29
Average service period										3 years
Callyo
Business Acquisition [Line Items]
Cash paid for acquisition											$ 61
Share-based compensation fair value											$ 3
Average service period											2 years
Consideration transferred											$ 63
Pelco, Inc.
Business Acquisition [Line Items]
Cash paid for acquisition												$ 107
Consideration transferred												$ 110
IndigoVision
Business Acquisition [Line Items]
Cash paid for acquisition													$ 35
Consideration transferred													$ 37
Cybersecurity Services Business
Business Acquisition [Line Items]
Cash paid for acquisition														$ 32	$ 33
Share-based compensation fair value															$ 6
Average service period															2 years
Consideration transferred															$ 40

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