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Foreign Exchange Forward Contracts - Notional Amounts of Most Significant Net Foreign Exchange Hedge Positions Outstanding (Detail) (USD $)
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Dec. 31, 2014
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| Euro [Member] |
|
| Derivative Instruments and Hedging Activities Disclosures [Line Items] |
|
| Derivative, Notional Amount, Buy / (Sell) |
$ 239,341,000 |
| Chinese Yuan [Member] |
|
| Derivative Instruments and Hedging Activities Disclosures [Line Items] |
|
| Derivative, Notional Amount, Buy / (Sell) |
(100,086,000) |
| Swiss Franc [Member] |
|
| Derivative Instruments and Hedging Activities Disclosures [Line Items] |
|
| Derivative, Notional Amount, Buy / (Sell) |
35,438,000 |
| Indonesian Rupiah [Member] |
|
| Derivative Instruments and Hedging Activities Disclosures [Line Items] |
|
| Derivative, Notional Amount, Buy / (Sell) |
(33,020,000) |
| British Pound [Member] |
|
| Derivative Instruments and Hedging Activities Disclosures [Line Items] |
|
| Derivative, Notional Amount, Buy / (Sell) |
$ (9,910,000) |