|
Fair Value Measurements (Details) (USD $)
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Mar. 31, 2015
|
Dec. 31, 2014
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Convertible Debt, Fair Value Disclosures |
$ 432,300,000 |
$ 408,000,000 |
| Convertible Debt |
340,411,000 |
337,986,000 |
| Fair Value, Measurements, Recurring [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Foreign Currency Contract, Asset, Fair Value Disclosure |
68,452,000 |
41,151,000 |
| Foreign Currency Contracts, Liability, Fair Value Disclosure |
(63,249,000) |
(36,439,000) |
| Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Foreign Currency Contract, Asset, Fair Value Disclosure |
0 |
0 |
| Foreign Currency Contracts, Liability, Fair Value Disclosure |
0 |
0 |
| Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Foreign Currency Contract, Asset, Fair Value Disclosure |
68,452,000 |
41,151,000 |
| Foreign Currency Contracts, Liability, Fair Value Disclosure |
(63,249,000) |
(36,439,000) |
| Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Foreign Currency Contract, Asset, Fair Value Disclosure |
0 |
0 |
| Foreign Currency Contracts, Liability, Fair Value Disclosure |
$ 0 |
$ 0 |