Financial Instruments - Fair Value Gains and Losses from Derivative Financial Instruments (Detail) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Gains (losses) on change in fair value of derivatives [line items] | ||
| Fair Value Gain Through Earnings | $ 201 | |
| Fair Value Gain (Loss) Through Equity | $ (11) | (11) |
| Foreign exchange contracts [member] | ||
| Gains (losses) on change in fair value of derivatives [line items] | ||
| Fair Value Gain Through Earnings | (19) | 11 |
| Cross-currency interest rate swaps [member] | ||
| Gains (losses) on change in fair value of derivatives [line items] | ||
| Fair Value Gain Through Earnings | 9 | 107 |
| Fair Value Gain (Loss) Through Equity | (11) | (11) |
| Forward interest rate swaps - cash flow hedges [member] | ||
| Gains (losses) on change in fair value of derivatives [line items] | ||
| Fair Value Gain Through Earnings | 1 | 1 |
| Warrants [member] | ||
| Gains (losses) on change in fair value of derivatives [line items] | ||
| Fair Value Gain Through Earnings | $ 9 | $ 82 |