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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
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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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