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Debt (Details) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014
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Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | $ 622,792 |
Less: current portion | (21,061) | $ (116,164)
Long-Term Debt |  |
Long-term debt | 601,731 | $ 335,790
US Dollar Amounts [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 450,283 |
Less: current portion | (283) |
Long-Term Debt |  |
Long-term debt | 450,000 |
Other Principal Trading Currencies [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 172,509 |
Less: current portion | (20,778) |
Long-Term Debt |  |
Long-term debt | 151,731 |
3.67% Senior Notes [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 50,000 |
3.67% Senior Notes [Member] | US Dollar Amounts [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 50,000 |
3.67% Senior Notes [Member] | Other Principal Trading Currencies [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 0 |
4.10% Senior Notes [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 50,000 |
4.10% Senior Notes [Member] | US Dollar Amounts [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 50,000 |
4.10% Senior Notes [Member] | Other Principal Trading Currencies [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 0 |
3.84% Senior Notes [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 125,000 |
3.84% Senior Notes [Member] | US Dollar Amounts [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 125,000 |
3.84% Senior Notes [Member] | Other Principal Trading Currencies [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 0 |
4.24% Senior Notes [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 125,000 |
4.24% Senior Notes [Member] | US Dollar Amounts [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 125,000 |
4.24% Senior Notes [Member] | Other Principal Trading Currencies [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 0 |
1.47% EURO Senior Notes [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 139,962 |
1.47% EURO Senior Notes [Member] | US Dollar Amounts [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 0 |
1.47% EURO Senior Notes [Member] | Other Principal Trading Currencies [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 139,962 |
Credit facility [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 111,769 |
Credit facility [Member] | US Dollar Amounts [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 100,000 |
Credit facility [Member] | Other Principal Trading Currencies [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 11,769 |
Other local arrangements [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 21,061 |
Other local arrangements [Member] | US Dollar Amounts [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | 283 |
Other local arrangements [Member] | Other Principal Trading Currencies [Member] |  |
Long-Term Debt, by Current and Noncurrent, and Short-Term Debt |  |
Total debt | $ 20,778 |

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- Definition Total of the portions of the carrying amounts as of the balance sheet date of long-term debt, which may include notes payable notes payable, bonds payable, debentures, mortgage loans, and commercial paper, which are scheduled to be repaid within one year or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. Total may also include short-term borrowings, scheduled to be repaid within one year. + References No definition available. + Details
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