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Variable Interest Entities (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Variable Interest Entity [Line Items]      
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets $ 7,941 $ 7,702 $ 7,417
VIE Commitments [Member]      
Variable Interest Entity [Line Items]      
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets 89    
Limited Partnerships and Similar Entities [Member]      
Variable Interest Entity [Line Items]      
Variable Interest Entity Remaining Investment Commitment Amount 18    
Equity Investment [Member] | VIE Commitments [Member]      
Variable Interest Entity [Line Items]      
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets 79    
Notes Receivable [Member] | VIE Commitments [Member]      
Variable Interest Entity [Line Items]      
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets $ 10    
Minimum [Member] | Limited Partnerships and Similar Entities [Member]      
Variable Interest Entity [Line Items]      
Variable Interest Entity, Restrictions on Withdrawal of Member Capital Account 2025    
Maximum [Member] | Limited Partnerships and Similar Entities [Member]      
Variable Interest Entity [Line Items]      
Variable Interest Entity, Restrictions on Withdrawal of Member Capital Account 2036    
Variable Interest Entity, Not Primary Beneficiary [Member] | Limited Partnerships and Similar Entities [Member] | VIE Commitments [Member]      
Variable Interest Entity [Line Items]      
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets $ 82