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FAIR VALUE - Level 3 Activity (Details) - Market Value - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance fixed maturities	$ 1,725	$ 2,068
Total gains or (losses) (realized/unrealized)
Included in earnings	1	16
Included in other comprehensive income (loss)	14	(33)
Purchases, issuances and settlements	5	74
Transfers in/(out) of Level 3 and reclassification of securities in/(out) of investment categories	0	0
Ending balance	1,745	2,125
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
Corporate securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance fixed maturities	715	801
Total gains or (losses) (realized/unrealized)
Included in earnings	1	16
Included in other comprehensive income (loss)	(4)	(4)
Purchases, issuances and settlements	(3)	(98)
Transfers in/(out) of Level 3 and reclassification of securities in/(out) of investment categories	0	0
Ending balance	709	715
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
Asset-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance fixed maturities	994	1,251
Total gains or (losses) (realized/unrealized)
Included in earnings	0	0
Included in other comprehensive income (loss)	18	(29)
Purchases, issuances and settlements	9	166
Transfers in/(out) of Level 3 and reclassification of securities in/(out) of investment categories	0	0
Ending balance	1,020	1,389
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
CMBS
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance fixed maturities		0
Total gains or (losses) (realized/unrealized)
Included in earnings		0
Included in other comprehensive income (loss)		0
Purchases, issuances and settlements		6
Transfers in/(out) of Level 3 and reclassification of securities in/(out) of investment categories		0
Ending balance		6
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
Foreign corporate securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance fixed maturities	16	16
Total gains or (losses) (realized/unrealized)
Included in earnings	0	0
Included in other comprehensive income (loss)	0	0
Purchases, issuances and settlements	0	0
Transfers in/(out) of Level 3 and reclassification of securities in/(out) of investment categories	0	0
Ending balance	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

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Amount of unrealized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3) and still held.

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-Publisher FASB
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Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy.

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