EQUITY - Components of OCI, Net of Taxes (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Mar. 31, 2024	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2023
Change in net unrealized gains (losses) on investments:
Net unrealized gains (losses) arising during the period		$ (72)		$ 72
(Gains) losses reclassified into net income (loss) during the period		0		4
Net unrealized gains (losses) on investments		(72)		76
Adjustments for policyholders’ liabilities, insurance liability loss recognition and other		1		(1)
Change in unrealized gains (losses), net of adjustments (net of deferred income tax expense (benefit) of $(13) and $16)	[1]	(71)		75
Change in LFPB discount rate and MRB credit risk
Change in market risk benefits - instrument-specific credit risk (net of deferred income tax expense (benefit) of $13 and $1)		48		4
Changes in liability for future policy benefits - current discount rate (net of deferred income tax expense (benefit) of $5 and $0)		18		0
Other comprehensive income (loss), net of income taxes		(5)	$ (404)	79	$ (368)
Deferred income tax expense (benefit) for change in unrealized gains (losses)		(13)		16
Deferred income tax expense (benefit) for market risk benefits - change in instrument-specific credit risk		13		1
Deferred income tax expense (benefit) for liability for future policy benefits - change in current discount rate		5		0
Reclassification adjustment		$ 0		$ 1

[1] See Note 12 of the Notes to these Consolidated Financial Statements for details of change in unrealized gains (losses), net of adjustments.