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FAIR VALUE - Level 3 Activity (Details) - Market Value - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance of fixed maturities | $ 1,842 | $ 2,164 | $ 1,725 | $ 2,068
Total gains or (losses) (realized/unrealized) |  |  |  |
Included in earnings | 1 | (2) | 3 | 9
Included in other comprehensive income (loss) | (3) | 59 | 2 | (28)
Purchases, issuances and settlements | 80 | 186 | 191 | 358
Transfers in/(out) of Level 3 and reclassification of securities in/(out) of investment categories | 0 | (779) | 0 | (779)
Ending balance of fixed maturities | 1,921 | 1,628 | 1,921 | 1,628
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at the reporting date | 0 | (3) | 1 | 0
Corporate Securities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance of fixed maturities | 711 | 863 | 715 | 801
Total gains or (losses) (realized/unrealized) |  |  |  |
Included in earnings | 1 | (2) | 3 | 9
Included in other comprehensive income (loss) | 0 | (6) | (5) | (13)
Purchases, issuances and settlements | 12 | 27 | 12 | (43)
Transfers in/(out) of Level 3 and reclassification of securities in/(out) of investment categories | 0 | (163) | 0 | (35)
Ending balance of fixed maturities | 725 | 719 | 725 | 719
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at the reporting date | 0 | (3) | 1 | (8)
Asset-backed Securities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance of fixed maturities | 1,115 | 1,255 | 994 | 1,251
Total gains or (losses) (realized/unrealized) |  |  |  |
Included in earnings | 0 | 0 | 0 | 0
Included in other comprehensive income (loss) | (3) | 65 | 7 | (11)
Purchases, issuances and settlements | 68 | 159 | 179 | 387
Transfers in/(out) of Level 3 and reclassification of securities in/(out) of investment categories | 0 | (587) | 0 | (735)
Ending balance of fixed maturities | 1,180 | 893 | 1,180 | 893
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at the reporting date | 0 | 0 | 0 | 8
Foreign corporate securities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance of fixed maturities | 16 | 40 | 16 | 16
Total gains or (losses) (realized/unrealized) |  |  |  |
Included in earnings | 0 | 0 | 0 | 0
Included in other comprehensive income (loss) | 0 | 0 | 0 | (4)
Purchases, issuances and settlements | 0 | 0 | 0 | 8
Transfers in/(out) of Level 3 and reclassification of securities in/(out) of investment categories | 0 | (24) | 0 | (4)
Ending balance of fixed maturities | 16 | 16 | 16 | 16
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at the reporting date | $ 0 | 0 | $ 0 | 0
CMBS |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance of fixed maturities |  | 6 |  | 0
Total gains or (losses) (realized/unrealized) |  |  |  |
Included in earnings |  | 0 |  | 0
Included in other comprehensive income (loss) |  | 0 |  | 0
Purchases, issuances and settlements |  | 0 |  | 6
Transfers in/(out) of Level 3 and reclassification of securities in/(out) of investment categories |  | (6) |  | (6)
Ending balance of fixed maturities |  | 0 |  | 0
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at the reporting date |  | $ 0 |  | $ 0

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