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DERIVATIVE INSTRUMENTS - Offsetting of Financial Assets and Derivative Assets (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
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Offsetting Assets [Line Items] |  |
Gross amount of recognized derivative assets | $ 519 | $ 555
Gross amount of liabilities offset in balance sheet | 0 | 0
Net amount of derivative assets presented in balance sheet | 519 | 555
Financial instruments, amount not offset | (189) | (174)
Derivative, collateral, obligation to return securities | (103) | (60)
Derivative, collateral, obligation to return cash | (225) | (320)
Derivative asset, fair value, amount offset against collateral, subject to master netting agreement | 2 | 1
Derivative asset, not subject to master netting arrangement | 59 | 62
Derivative asset, fair value, gross asset including not subject to master netting arrangement | 578 | 617
Net amount of derivative assets presented in balance sheet | 578 | 617
Derivative asset, fair value, amount offset against collateral | 61 | 63
Securities lending, gross amounts of recognized financial instruments | 4,563 | 1,788
Securities lending, gross amounts offset in balance sheet | 0 | 0
Securities lending, net amounts of assets presented in balance sheet | 4,563 | 1,788
Securities lending, carrying value of financial instruments not offset in balance sheet | 0 | 0
Securities lending, securities collateral, not offset in balance sheet | 0 | 0
Securities lending, cash collateral, not offset in balance sheet | (4,563) | (1,788)
Securities lending, financial instruments, amount of assets offset against collateral | 0 | 0
Gross amount of recognized assets | 5,141 | 2,405
Gross amounts offset in balance sheet | 0 | 0
Net amounts of assets presented in balance sheet | 5,141 | 2,405
Carrying value of financial instruments not offset in balance sheet | (189) | (174)
Securities collateral, not offset in balance sheet | (103) | (60)
Cash collateral, not offset in balance sheet | (4,788) | (2,108)
Financial instruments, amount of assets offset against collateral | 61 | 63
OTC - Bilateral |  |
Offsetting Assets [Line Items] |  |
Gross amount of recognized derivative assets | 519 | 548
Gross amount of liabilities offset in balance sheet | 0 | 0
Net amount of derivative assets presented in balance sheet | 519 | 548
Financial instruments, amount not offset | (189) | (167)
Derivative, collateral, obligation to return securities | (103) | (60)
Derivative, collateral, obligation to return cash | (225) | (320)
Derivative asset, fair value, amount offset against collateral, subject to master netting agreement | 2 | 1
Derivative asset, not subject to master netting arrangement | 59 | 62
OTC- Cleared |  |
Offsetting Assets [Line Items] |  |
Gross amount of recognized derivative assets | 0 | 7
Gross amount of liabilities offset in balance sheet | 0 | 0
Net amount of derivative assets presented in balance sheet | 0 | 7
Financial instruments, amount not offset | 0 | (7)
Derivative, collateral, obligation to return securities | 0 | 0
Derivative, collateral, obligation to return cash | 0 | 0
Derivative asset, fair value, amount offset against collateral, subject to master netting agreement | $ 0 | $ 0

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