Business, Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) Segment	Dec. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jan. 01, 2021 USD ($)	Dec. 31, 2020 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of segments		6		6
Finite-Lived Intangible Assets [Line Items]
Operating Lease, Right-of-Use Asset, Amortization Expense			$ 0		$ 3	$ 45
Policyholder Account Balance, Guaranteed Minimum Credit Rating	$ 219,269	$ 219,269	219,269	$ 219,269	210,597		$ 211,737
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating	219,269	219,269	219,269	219,269	210,597		211,737
Deferred Sale Inducement Cost	146	146	146	146	133
Property, Plant and Equipment, Capitalized Computer Software, Gross	7,300	7,300	7,300	7,300	6,900
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment and Capitalized Computer Software	$ 4,800	4,800	4,800	4,800	4,400
Depreciation and Capitalized Computer Software, Amortization			470		423	426
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
Other balance sheet reclassifications upon adoption of the LDTI standard
Finite-Lived Intangible Assets [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating							7,519
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating							7,519
Annuities and Risk Solutions | Retirement and Income Solutions
Finite-Lived Intangible Assets [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating	$ 17,711	17,711	17,711	17,711	15,549	14,431	13,643	$ 13,643
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating	$ 17,711	$ 17,711	$ 17,711	$ 17,711	$ 15,549	$ 14,431	13,643	13,643
Annuities and Risk Solutions | Other balance sheet reclassifications upon adoption of the LDTI standard | Retirement and Income Solutions
Finite-Lived Intangible Assets [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating							7,417	7,400
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating							$ 7,417	$ 7,400
Building | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	40 years	40 years	40 years	40 years
Leasehold Improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	20 years	20 years	20 years	20 years
VODA and VOCRA | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization period	9 years	9 years	9 years	9 years
VODA and VOCRA | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization period	40 years	40 years	40 years	40 years
Computer Software, Intangible Asset | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization period	4 years	4 years	4 years	4 years