Restructuring Charges - Restructuring Charges Less Releases Recorded in Liabilities Per Line Item in Statement of Operations (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Restructuring Cost and Reserve [Line Items] | |||
| Net restructuring charges | $ 68 | $ 264 | $ 28 |
| Cost of Revenue [Member] | |||
| Restructuring Cost and Reserve [Line Items] | |||
| Net restructuring charges | 18 | 18 | 16 |
| Selling, General and Administrative [Member] | |||
| Restructuring Cost and Reserve [Line Items] | |||
| Net restructuring charges | 9 | 155 | 3 |
| Research and Development [Member] | |||
| Restructuring Cost and Reserve [Line Items] | |||
| Net restructuring charges | $ 41 | $ 91 | $ 9 |