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COMMITMENTS AND CONTINGENCIES (Details) | 1 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2016 | Dec. 31, 2023 USD ($) claim | Oct. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2020 claim | Oct. 31, 2020 claim
Debt Instrument [Line Items] |  |  |  |  |  |
Purchase obligation |  | $ 793,000,000 |  |  |  |
Purchase obligation, 2022 |  | 214,000,000 |  |  |  |
Purchase obligation, 2023 through 2024 |  | $ 352,000,000 |  |  |  |
Agreement to outsource billing and collection function | 10 years |  |  |  |  |
Remaining terms of lease obligations, maximum |  | 24 years |  |  |  |
Litigation reserves |  | $ 6,000,000 |  | $ 2,000,000 |  |
Self-insurance reserves |  | $ 173,000,000 |  | $ 169,000,000 |  |
401(k) Plan Lawsuit | Pending Litigation |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Pending claims (in claims) | claim |  |  |  |  | 2 | 2
Data Security Incident | Pending Litigation |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Pending claims (in claims) | claim |  | 2 |  |  |  |
Letter of Credit |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Letters of credit outstanding, amount |  | $ 72,000,000 |  |  |  |
Secured Receivables Credit Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Credit facility capacity |  |  | $ 525,000,000 |  |  |
Secured Receivables Credit Facility | Letter of Credit |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Credit facility capacity |  |  | $ 150,000,000 |  |  |

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