INVESTMENTS - Fixed Maturities, Available-for-sale Securities (Details) - USD ($) $ in Millions		Sep. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost			$ 8,556
Gross Unrealized Gains			302
Gross Unrealized Losses			86
Allowance for Credit Losses			1
Fair Value	[1]	$ 5,565	8,771
U.S Treasury securities and obligations of U.S. government authorities and agencies
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost			654
Gross Unrealized Gains			74
Gross Unrealized Losses			1
Allowance for Credit Losses			0
Fair Value			727
Obligations of U.S. states and their political subdivisions
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost			281
Gross Unrealized Gains			15
Gross Unrealized Losses			0
Allowance for Credit Losses			0
Fair Value			296
Foreign government bonds
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost			106
Gross Unrealized Gains			9
Gross Unrealized Losses			1
Allowance for Credit Losses			0
Fair Value			114
U.S. corporate public securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost			2,345
Gross Unrealized Gains			134
Gross Unrealized Losses			18
Allowance for Credit Losses			0
Fair Value			2,461
U.S. corporate private securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost			1,635
Gross Unrealized Gains			24
Gross Unrealized Losses			14
Allowance for Credit Losses			1
Fair Value			1,644
Foreign corporate public securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost			793
Gross Unrealized Gains			11
Gross Unrealized Losses			9
Allowance for Credit Losses			0
Fair Value			795
Foreign corporate private securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost			920
Gross Unrealized Gains			5
Gross Unrealized Losses			34
Allowance for Credit Losses			0
Fair Value			891
Asset-backed securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost			1,058
Gross Unrealized Gains			5
Gross Unrealized Losses			1
Allowance for Credit Losses			0
Fair Value			1,062
Commercial mortgage-backed securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost			692
Gross Unrealized Gains			22
Gross Unrealized Losses			8
Allowance for Credit Losses			0
Fair Value			706
Residential mortgage-backed securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost			72
Gross Unrealized Gains			3
Gross Unrealized Losses			0
Allowance for Credit Losses			0
Fair Value			$ 75

[1] As of April 1, 2022 we have elected the fair value option for these financial statement line items. See Note 2 for further discussion.