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INCOME TAXES - Provision for Income Taxes Reconciliation (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income Tax Disclosure [Abstract] |  |  |
Income tax provision at federal statutory rate | $ 698 | $ 750 | $ 718
States, net of federal benefit, and Puerto Rico | 61 | 49 | 18
Tax exempt investment income | (3) | (3) | (3)
Nondeductible executive compensation | 19 | 30 | 33
Non-taxable KAH gain | 0 | 0 | (264)
Tax effect from sale of Gentiva Hospice | 0 | (72) | 0
Unrecognized Tax Benefits | 37 | 0 | 0
Other, net | 24 | 8 | (17)
Provision for income taxes | $ 836 | $ 762 | $ 485

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