Summary of Activity Relating to Securitization Arrangement (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Fair Value Disclosures [Abstract] | |||
| Sold receivables at beginning of year | $ 81 | $ 104 | $ 114 |
| Proceeds from sales of receivables | 348 | 361 | 464 |
| Cash collections (remitted to the owners of the receivables) | (367) | (384) | (459) |
| Effect of currency exchange rate changes | 6 | (15) | |
| Sold receivables at end of year | $ 68 | $ 81 | $ 104 |