INVESTMENTS - AFS Fixed Maturities by Classification (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 86,013	$ 82,106
Allowance for Credit Losses	7	0
Gross Unrealized Gains	468	906
Gross Unrealized Losses	6,283	5,850
Fair Value	80,191	77,162
Corporate
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	50,445	48,193
Allowance for Credit Losses	7	0
Gross Unrealized Gains	345	658
Gross Unrealized Losses	4,279	4,010
Fair Value	46,504	44,841
U.S. government, agencies and authorities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,308	5,040
Allowance for Credit Losses	0	0
Gross Unrealized Gains	1	1
Gross Unrealized Losses	1,373	1,304
Fair Value	3,936	3,737
States and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	374	378
Allowance for Credit Losses	0	0
Gross Unrealized Gains	1	3
Gross Unrealized Losses	70	71
Fair Value	305	310
Foreign governments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	510	556
Allowance for Credit Losses	0	0
Gross Unrealized Gains	1	3
Gross Unrealized Losses	75	77
Fair Value	436	482
Residential mortgage-backed
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	7,782	7,093
Allowance for Credit Losses	0	0
Gross Unrealized Gains	49	85
Gross Unrealized Losses	127	92
Fair Value	7,704	7,086
Asset-backed
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	16,751	15,978
Allowance for Credit Losses	0	0
Gross Unrealized Gains	57	126
Gross Unrealized Losses	95	46
Fair Value	16,713	16,058
Commercial mortgage-backed
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	4,789	4,814
Allowance for Credit Losses	0	0
Gross Unrealized Gains	11	26
Gross Unrealized Losses	264	250
Fair Value	4,536	4,590
Redeemable preferred stock
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	54	54
Allowance for Credit Losses	0	0
Gross Unrealized Gains	3	4
Gross Unrealized Losses	0	0
Fair Value	$ 57	$ 58

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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