LIABILITIES FOR FUTURE POLICYHOLDER BENEFITS - Schedule of Liability for Future Policy Benefits, Revenue and Interest Accretion (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premium	$ 209	$ 282
Interest Accretion	173	172
Retirement \| Payout
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premium	81	116
Interest Accretion	110	105
Corporate & Other \| Term
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premium	125	161
Interest Accretion	30	32
Corporate & Other \| Group Pension
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premium	0	0
Interest Accretion	8	9
Corporate & Other \| Health
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premium	3	5
Interest Accretion	$ 25	$ 26

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