Fair Value Measurements (Changes In Level 3 Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - Other financial derivative liabilities - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
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| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||||
| Balance at Beginning of Period | $ (8) | $ (12) | $ (6) | $ (12) | ||
| Realized Gains (Losses) (Pretax) Recorded in Earnings | [1] | 0 | 6 | 0 | 6 | |
| Unrealized Gains (Losses) (Pretax) Recorded in Earnings | [1] | (2) | 0 | (4) | 0 | |
| Balance at End of Period | $ (10) | $ (6) | $ (10) | $ (6) | ||
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