LIABILITIES FOR FUTURE POLICYHOLDER BENEFITS - Schedule of Liability for Future Policy Benefits, Revenue and Interest Accretion (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premium	$ 121	$ 152
Interest Accretion	86	87
Retirement \| Payout
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premium	43	67
Interest Accretion	54	53
Corporate & Other \| Term
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premium	76	83
Interest Accretion	15	16
Corporate & Other \| Group Pension
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premium	0	0
Interest Accretion	4	5
Corporate & Other \| Health
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premium	2	2
Interest Accretion	$ 13	$ 13

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details