v3.25.1
Benefit Plans (Schedule of Non-Service Cost (Benefit) Presented in the Consolidated Statement of Operations) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Net periodic defined benefits expense (reversal of expense), excluding service cost component $ (3) $ 0
DefinedBenefitPlanNetPeriodicBenefitCostCreditExcludingServiceCostStatementOfIncomeOrComprehensiveIncomeExtensibleListNotDisclosedFlag Other operating expenses, Insurance claims and policyholders’ benefits (re-measurement loss of $8 and $15)  
Insurance claims and policyholder's benefits    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Net periodic defined benefits expense (reversal of expense), excluding service cost component $ (1) 0
Other operating expenses    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Net periodic defined benefits expense (reversal of expense), excluding service cost component $ (2) $ 0