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COMMITMENTS, GUARANTEES AND CONTINGENCIES (Details) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2022 state beneficiary option_period | Dec. 31, 2023 USD ($) beneficiary state
Loss Contingencies [Line Items] |  |
Purchase obligations in 2024 |  | $ 829
Purchase obligations in 2025 |  | 518
Purchase obligations in 2026 |  | 354
Purchase obligations in 2027 |  | 273
Purchase obligations in 2028 |  | $ 209
TRICARE 2017 East Region Contract |  |
Loss Contingencies [Line Items] |  |
Number of states comprising TRICARE beneficiaries | state |  | 32
Number of TRICARE beneficiaries | beneficiary |  | 6,000,000
TRICARE Managed Care Support Contract, Effective 2024 |  |
Loss Contingencies [Line Items] |  |
Number of states comprising TRICARE Managed Care Support Contract beneficiaries | state | 24 |
Number of TRICARE Managed Care Support Contract beneficiaries | beneficiary | 4,600,000 |
Contract base term | 1 year |
Annual option periods | option_period | 8 |
Contract term with exercises | 9 years |
Medicare |  |
Loss Contingencies [Line Items] |  |
Percentage of premiums and services revenue |  | 83.00%
Medicaid |  |
Loss Contingencies [Line Items] |  |
Percentage of premiums and services revenue |  | 7.00%
Military services | TRICARE 2017 East Region Contract |  |
Loss Contingencies [Line Items] |  |
Percentage of premiums and services revenue |  | 1.00%

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