v3.26.3
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 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 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) $ 18 $ (20)
Change in unrealized gains or losses for the period included in other comprehensive income for assets and liabilities held at end of period (14) (8) (15) 0
Junior subordinated debentures, at fair value        
Beginning balance (339) (323) (338) (331)
Change included in earnings 6 (7) 18 (20)
Change in fair values included in comprehensive income/loss (14) (8) (15) 0
Purchases and issuances 0 0 0 0
Sales and settlements (6) 7 (18) 20
Ending balance (353) (331) (353) (331)
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 13 (2) 20 (3)
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 0 0
Residential mortgage servicing rights        
Beginning balance 105 103 99 108
Change included in earnings 10 (3) 11 (12)
Change in fair values included in comprehensive income/loss 0 0 0
Purchases and issuances 3 1 8 5
Sales and settlements 0 0 0 0
Ending balance $ 118 $ 101 $ 118 $ 101