Investments - Schedule of Distribution of Commercial and Residential Mortgage Loans, Percentage by Geographical Location (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Total investment funds, including related parties and consolidated VIEs	$ 17,561	$ 14,128
Nonrelated Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 109	$ 79
Percentage of Total	100.00%	100.00%
Nonrelated Party \| VIE, Primary Beneficiary
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 15,820	$ 12,480
Percentage of Total	100.00%	100.00%
Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 1,632	$ 1,569
Percentage of Total	100.00%	100.00%
Strategic origination platforms \| Nonrelated Party \| VIE, Primary Beneficiary
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 5,594	$ 4,829
Percentage of Total	35.40%	38.70%
Strategic origination platforms \| Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 47	$ 34
Percentage of Total	2.90%	2.20%
Strategic insurance platforms \| Nonrelated Party \| VIE, Primary Beneficiary
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 483	$ 529
Percentage of Total	3.10%	4.20%
Strategic insurance platforms \| Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 1,300	$ 1,259
Percentage of Total	79.70%	80.20%
Equity funds \| Nonrelated Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 82	$ 46
Percentage of Total	75.30%	58.20%
Equity funds \| Nonrelated Party \| VIE, Primary Beneficiary
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 3,302	$ 2,640
Percentage of Total	20.90%	21.20%
Equity funds \| Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 254	$ 246
Percentage of Total	15.60%	15.70%
Hybrid funds \| Nonrelated Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 20	$ 32
Percentage of Total	18.30%	40.50%
Hybrid funds \| Nonrelated Party \| VIE, Primary Beneficiary
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 4,242	$ 3,112
Percentage of Total	26.70%	24.90%
Yield funds \| Nonrelated Party \| VIE, Primary Beneficiary
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 1,356	$ 1,044
Percentage of Total	8.60%	8.40%
Yield funds \| Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 8	$ 5
Percentage of Total	0.50%	0.30%
Other \| Nonrelated Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 7	$ 1
Percentage of Total	6.40%	1.30%
Other \| Nonrelated Party \| VIE, Primary Beneficiary
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 843	$ 326
Percentage of Total	5.30%	2.60%
Other \| Related Party
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying Value	$ 23	$ 25
Percentage of Total	1.30%	1.60%
Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 26,612	$ 20,108
Percentage of Total	100.00%	100.00%
Residential Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Percentage of Total	100.00%	100.00%
Total U.S. residential mortgage loan percentage \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 22,598	$ 16,860
Percentage of Total	85.00%	83.90%
Total U.S. residential mortgage loan percentage \| Residential Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Percentage of Total	91.00%	86.30%
East North Central \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 1,517	$ 1,437
Percentage of Total	5.70%	7.10%
East South Central \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 523	$ 413
Percentage of Total	2.00%	2.10%
Middle Atlantic \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 7,147	$ 5,183
Percentage of Total	26.90%	25.80%
Mountain \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 1,196	$ 898
Percentage of Total	4.50%	4.50%
New England \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 1,295	$ 1,076
Percentage of Total	4.90%	5.40%
Pacific \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 4,860	$ 3,781
Percentage of Total	18.30%	18.80%
South Atlantic \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 4,583	$ 2,756
Percentage of Total	17.20%	13.70%
West North Central \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 249	$ 231
Percentage of Total	0.90%	1.10%
West South Central \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 1,228	$ 1,085
Percentage of Total	4.60%	5.40%
California \| Residential Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Percentage of Total	27.60%	28.90%
Florida \| Residential Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Percentage of Total	12.00%	9.70%
Texas \| Residential Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Percentage of Total	6.10%	4.30%
New York \| Residential Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Percentage of Total	5.90%	5.60%
New Jersey \| Residential Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Percentage of Total	4.90%	5.30%
Arizona \| Residential Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Percentage of Total	4.10%	5.10%
Other \| Residential Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Percentage of Total	30.40%	27.40%
Total International Region \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 4,014	$ 3,248
Percentage of Total	15.00%	16.10%
Total International Region \| Residential Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Percentage of Total	9.00%	13.70%
United Kingdom \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 2,343	$ 1,898
Percentage of Total	8.70%	9.40%
United Kingdom \| Residential Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Percentage of Total	4.00%	5.40%
Other international \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 1,671	$ 1,350
Percentage of Total	6.30%	6.70%
Other international \| Residential Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Percentage of Total	5.00%	8.30%
Apartment \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 9,591	$ 6,692
Percentage of Total	36.00%	33.30%
Office building \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 4,455	$ 4,651
Percentage of Total	16.70%	23.10%
Industrial \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 4,143	$ 2,047
Percentage of Total	15.60%	10.20%
Hotels \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 2,913	$ 1,855
Percentage of Total	11.00%	9.20%
Retail \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 2,158	$ 1,454
Percentage of Total	8.10%	7.20%
Other commercial \| Commercial Mortgage Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Fair Value	$ 3,352	$ 3,409
Percentage of Total	12.60%	17.00%

Investment Funds

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- Definition

Investment Funds Including Related Party and Variable Interest Entities

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- Definition

Investment Funds, Percent of Total

+ References

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- Definition

Investments, Percentage Of Total

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph c
-Publisher SEC

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- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(h))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

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