Business, Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) Segment	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jan. 01, 2021 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of segments | Segment	6
Finite-Lived Intangible Assets [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating	$ 221,445	$ 219,269
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating	221,445	219,269
Deferred Sale Inducement Cost	155	146
Property, Plant and Equipment, Capitalized Computer Software, Gross	7,700	7,300
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment and Capitalized Computer Software	5,100	4,800
Depreciation and Capitalized Computer Software, Amortization	$ 469	470	$ 423
Maximum
Real Estate Held-for-investment And Accumulated Depreciation [Line Items]
Real Estate Held-for-investment And Accumulated Depreciation Life Used For Depreciation	55 years
Annuities and Risk Solutions | RIS
Finite-Lived Intangible Assets [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating	$ 20,699	17,711	15,549	$ 14,431	$ 144
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating	$ 20,699	$ 17,711	$ 15,549	$ 14,431	$ 144
Building | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Leasehold Improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	20 years
VODA and VOCRA | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization period	9 years
VODA and VOCRA | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization period	40 years
Computer Software, Intangible Asset | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization period	3 years