v3.26.1
Fair Value Measurements (Summary Of Changes In Level 3 Fair Value Measurements) (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]    
Balance, Beginning Balance $ 1 $ 0
Total Gains (Losses) $ 37 $ (2)
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Purchases, sales and issuances $ 0 $ 0
Settlements 0 0
Transfers Out of Level 3 0 0
Balance, Ending Balance 38 (2)
Change in Unrealized Gains (Losses) During the Period Included in Net Earnings (Loss) $ 37 $ (2)