Share-based Compensation - Schedule of Share-Based Compensation Expense (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | |||
| Share-based compensation | $ 338 | $ 216 | $ 133 |
| Cost of Revenue [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | |||
| Share-based compensation | 49 | 15 | 10 |
| Research and Development [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | |||
| Share-based compensation | 123 | 45 | 20 |
| Selling, General and Administrative [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | |||
| Share-based compensation | $ 166 | $ 156 | $ 103 |