Derivative Instruments (Effect Of Derivative Instruments On Consolidated Statements Of Operations) (Detail) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2023 |
Mar. 31, 2022 |
|
| Derivative [Line Items] | ||
| Net gain/(loss) recognized in income | $ (13) | $ 30 |
| Interest Rate Swap [Member] | ||
| Derivative [Line Items] | ||
| Net gain/(loss) recognized in income | (9) | 30 |
| Currency swaps-VIE [Member] | ||
| Derivative [Line Items] | ||
| Net gain/(loss) recognized in income | $ (4) | $ 0 |