Debt - CRBGLH Notes and Junior Subordinated Debentures (Details) - USD ($) $ in Millions	Dec. 31, 2025	Jul. 15, 2025	Dec. 31, 2024
CRBGLH Junior Subordinated Debt, Due July 2030 \| CRBGLH notes
Debt Instrument [Line Items]
Total long-term debt	$ 54
Interest rate (as a percent)	8.50%
CRBGLH Junior Subordinated Debt, Due December 2045 \| CRBGLH notes
Debt Instrument [Line Items]
Total long-term debt	$ 31
Interest rate (as a percent)	7.57%
CRBGLH Junior Subordinated Debt, Due March 2046 \| CRBGLH notes
Debt Instrument [Line Items]
Total long-term debt	$ 142
Interest rate (as a percent)	8.125%
CRBGLH Notes Due 2025 \| CRBGLH Notes \| Senior unsecured notes
Debt Instrument [Line Items]
Amount of debt issued		$ 101
CRBGLH Notes Due 2025 \| Hybrid junior subordinated notes \| Senior unsecured notes
Debt Instrument [Line Items]
Interest rate (as a percent)		7.50%
Consolidated Entities, Excluding Consolidated Investments
Debt Instrument [Line Items]
Total long-term debt	$ 9,426		$ 9,426
Consolidated Entities, Excluding Consolidated Investments \| CRBGLH notes
Debt Instrument [Line Items]
Total long-term debt	326
Consolidated Entities, Excluding Consolidated Investments \| CRBGLH Junior Subordinated Debt, Due Between 2030 and 2046 \| CRBGLH junior subordinated debentures
Debt Instrument [Line Items]
Total long-term debt	227
Consolidated Entities, Excluding Consolidated Investments \| CRBGLH notes \| CRBGLH notes
Debt Instrument [Line Items]
Total long-term debt	$ 99		$ 99
Interest rate (as a percent)	6.63%