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%

Number Of States Comprising Of TRICARE Managed Care Support Contract Beneficiaries

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