Financial Instruments and Risk Concentration - Additional Information (Details) - Foreign Exchange Forward $ in Millions |
Dec. 31, 2015
USD ($)
|
|---|---|
| Valuation and Qualifying Accounts Disclosure [Line Items] | |
| Notional value of forward foreign currency exchange contracts | $ 464 |
| Japanese Yen | |
| Valuation and Qualifying Accounts Disclosure [Line Items] | |
| Notional value of forward foreign currency exchange contracts | 175 |
| Euros | |
| Valuation and Qualifying Accounts Disclosure [Line Items] | |
| Notional value of forward foreign currency exchange contracts | $ 139 |