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BUSINESS COMBINATIONS - Additional Information (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 USD ($) business | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($) business
Asset Acquisition [Line Items] |  |  |
Number of immaterial acquisitions | business | 3 |  |
Acquisitions, consideration transferred | $ 28 |  |
Cash paid at closing | 23 |  |
Accrued consideration issued in business combinations | 5 | $ 1 |
Goodwill |  |  | $ 47
Acquisition A23 |  |  |
Asset Acquisition [Line Items] |  |  |
Acquisitions, consideration transferred |  |  | 38
Cash paid at closing |  |  | 30
Accrued consideration issued in business combinations |  |  | 3
Cash deposited into escrow |  |  | 5
Goodwill |  |  | 21
Acquisition B23 |  |  |
Asset Acquisition [Line Items] |  |  |
Acquisitions, consideration transferred |  |  | 32
Cash paid at closing |  |  | 27
Accrued consideration issued in business combinations |  |  | 5
Cash deposited into escrow |  |  | 0
Goodwill |  |  | $ 15
Other 2023 acquisitions |  |  |
Asset Acquisition [Line Items] |  |  |
Number of immaterial acquisitions | business |  |  | 5
Acquisitions, consideration transferred |  |  | $ 24
Cash paid at closing |  |  | 22
Accrued consideration issued in business combinations |  |  | 2
Cash deposited into escrow |  |  | 0
Goodwill |  |  | 16
APi Acquisition |  |  |
Asset Acquisition [Line Items] |  |  |
Contingent compensation | 11 |  | 9
Maximum payout of contingent compensation | 15 |  | 15
Payout of accrued contingent compensation | 11 |  | 9
Liability for deferred payments | $ 21 |  | $ 17
APi Acquisition | Minimum |  |  |
Asset Acquisition [Line Items] |  |  |
Contingent compensation arrangements recognized period |  |  | 1 year
Liability for deferred payments recognition period |  |  | 1 year
APi Acquisition | Maximum |  |  |
Asset Acquisition [Line Items] |  |  |
Contingent compensation arrangements recognized period |  |  | 4 years
Liability for deferred payments recognition period |  |  | 3 years

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