Financial Instruments and Risk Concentration - Additional Information (Details) - Foreign Exchange Forward $ in Millions |
Dec. 31, 2016
USD ($)
|
|---|---|
| Valuation and Qualifying Accounts Disclosure [Line Items] | |
| Notional value of forward foreign currency exchange contracts | $ 494 |
| Japanese Yen | |
| Valuation and Qualifying Accounts Disclosure [Line Items] | |
| Notional value of forward foreign currency exchange contracts | 158 |
| Euros | |
| Valuation and Qualifying Accounts Disclosure [Line Items] | |
| Notional value of forward foreign currency exchange contracts | $ 123 |