DAC AND OTHER DEFERRED ASSETS/LIABILITIES - Reconciliation of DAC (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025	Sep. 30, 2025	Dec. 31, 2024
Deferred Policy Acquisition Cost [Line Items]
Deferred policy acquisition costs	$ 7,686	$ 7,523
Other
Deferred Policy Acquisition Cost [Line Items]
Deferred policy acquisition costs	20	19
Retirement \| GMxB Core
Deferred Policy Acquisition Cost [Line Items]
Deferred policy acquisition costs	1,557	1,587	$ 1,592	$ 1,605
Retirement \| EQUI-VEST Individual
Deferred Policy Acquisition Cost [Line Items]
Deferred policy acquisition costs	149	153	153	154
Retirement \| Investment Edge
Deferred Policy Acquisition Cost [Line Items]
Deferred policy acquisition costs	317	273	261	225
Retirement \| SCS
Deferred Policy Acquisition Cost [Line Items]
Deferred policy acquisition costs	2,466	2,274	2,188	1,938
Retirement \| EQUI-VEST Group
Deferred Policy Acquisition Cost [Line Items]
Deferred policy acquisition costs	800	789	781	768
Retirement \| Momentum
Deferred Policy Acquisition Cost [Line Items]
Deferred policy acquisition costs	76	79	79	83
Corporate & Other \| Term
Deferred Policy Acquisition Cost [Line Items]
Deferred policy acquisition costs	256	288	294	314
Corporate & Other \| UL
Deferred Policy Acquisition Cost [Line Items]
Deferred policy acquisition costs	162	167	169	170
Corporate & Other \| VUL
Deferred Policy Acquisition Cost [Line Items]
Deferred policy acquisition costs	1,174	1,143	1,128	1,083
Corporate & Other \| IUL
Deferred Policy Acquisition Cost [Line Items]
Deferred policy acquisition costs	175	181	183	186
Corporate & Other \| GMxB Legacy
Deferred Policy Acquisition Cost [Line Items]
Deferred policy acquisition costs	442	472	482	517
Corporate & Other \| CB
Deferred Policy Acquisition Cost [Line Items]
Deferred policy acquisition costs	92	98	100	107
Corporate Segment
Deferred Policy Acquisition Cost [Line Items]
Deferred policy acquisition costs	$ 7,666	$ 7,504	$ 7,410	$ 7,150