v3.26.1
Fair Value Measurement (Schedule Of Reconciliation Of Assets And Liabilities Measured At Fair Value Using Significant Unobservable Inputs (Level 3) On A Recurring Basis) (Details) - Level 3 - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Junior Subordinated Debentures, at Fair Value    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Change in unrealized gains or losses for the period included in earnings for assets and liabilities held at end of period $ 6 $ (7)
Change in unrealized gains or losses for the period included in other comprehensive income for assets and liabilities held at end of period 4 10
Junior subordinated debentures, at fair value    
Beginning balance (338) (331)
Change included in earnings 6 (7)
Change in fair values included in comprehensive income/loss 4 10
Purchases and issuances 0 0
Sales and settlements (5) 7
Ending balance (333) (321)
Residential Mortgage Servicing Rights    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Change in unrealized gains or losses for the period included in earnings for assets and liabilities held at end of period 6 (1)
Change in unrealized gains or losses for the period included in other comprehensive income for assets and liabilities held at end of period 0 0
Residential mortgage servicing rights    
Beginning balance 99 108
Change included in earnings 3 (4)
Change in fair values included in comprehensive income/loss 0 0
Purchases and issuances 3 2
Sales and settlements 0 0
Ending balance $ 105 $ 106