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FAIR VALUE - Level 3 Activity (Details) - Market Value - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance of fixed maturities	$ 1,745	$ 2,125	$ 1,725	$ 2,068
Total gains or (losses) (realized/unrealized)
Included in earnings	1	(4)	2	12
Included in other comprehensive income (loss)	(9)	(54)	4	(87)
Purchases, issuances and settlements	105	97	111	171
Transfers in/(out) of Level 3 and reclassification of securities in/(out) of investment categories	0	0	0	0
Ending balance of fixed maturities	1,842	2,163	1,842	2,163
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	2	0	3
Corporate Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance of fixed maturities	709	715	715	801
Total gains or (losses) (realized/unrealized)
Included in earnings	1	(5)	2	11
Included in other comprehensive income (loss)	(2)	(3)	(6)	(7)
Purchases, issuances and settlements	3	28	0	(70)
Transfers in/(out) of Level 3 and reclassification of securities in/(out) of investment categories	0	128	0	128
Ending balance of fixed maturities	711	862	711	862
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	(5)	0	(5)
Asset-backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance of fixed maturities	1,020	1,389	994	1,251
Total gains or (losses) (realized/unrealized)
Included in earnings	0	0	0	0
Included in other comprehensive income (loss)	(8)	(47)	10	(76)
Purchases, issuances and settlements	103	62	111	228
Transfers in/(out) of Level 3 and reclassification of securities in/(out) of investment categories	0	(148)	0	(148)
Ending balance of fixed maturities	1,115	1,255	1,115	1,255
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	8	0	8
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		0		0
Ending balance of fixed maturities		6		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		0
Foreign corporate securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance of fixed maturities	16	16	16	16
Total gains or (losses) (realized/unrealized)
Included in earnings	0	0	0	0
Included in other comprehensive income (loss)	0	(4)	0	(4)
Purchases, issuances and settlements	0	8	0	8
Transfers in/(out) of Level 3 and reclassification of securities in/(out) of investment categories	0	20	0	20
Ending balance of fixed maturities	16	40	16	40
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

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Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings And Other Comprehensive Income

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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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