Fair Value of Financial Instruments (Effects Of Derivative Instruments On Consolidated Statements Of Operations) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Total | $ (4) | $ 6 | $ (4) | $ 5 |
| Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Revenues of consolidated VIEs | Revenues of consolidated VIEs | Revenues of consolidated VIEs | Revenues of consolidated VIEs |
| Net Gains (Losses) on Financial Instruments at Fair Value and Foreign Exchange [Member] | Variable Interest Entity, Not Primary Beneficiary [Member] | Currency swaps-VIE | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Total | $ (4) | $ 6 | $ (4) | $ 5 |