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Debt and Finance Lease Obligations (Debt Including Capital Lease Obligations) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Sep. 14, 2020 | Dec. 31, 2019 | Mar. 17, 2015 | Nov. 01, 2013 | Sep. 11, 2012
--- | --- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt | $ 1,726,906 |  |  |  |  |
Finance lease obligations and other borrowings | 25,390 |  | $ 23,103 |  |  |
Debt and finance lease obligations | 1,726,906 |  | 1,377,249 |  |  |
Less amounts due within one year | 8,995 |  | 11,272 |  |  |
Total debt due after one year | $ 1,717,911 |  | $ 1,365,977 |  |  |
2022 EUR Senior notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percentage) | 1.25% |  | 1.25% | 1.25% |  |
Unamortized discount and debt issuance costs | $ 1,070 |  | $ 2,653 |  |  |
Long-term debt | $ 410,243 |  | $ 557,847 |  |  |
2022 Senior notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percentage) | 3.50% |  | 3.50% |  |  | 3.50%
Unamortized discount and debt issuance costs | $ 1,235 |  | $ 1,924 |  |  |
Long-term debt | $ 498,765 |  | $ 498,076 |  |  |
2023 Senior notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percentage) | 4.00% |  | 4.00% |  | 4.00% |
Unamortized discount and debt issuance costs | $ 1,345 |  | $ 1,777 |  |  |
Long-term debt | $ 298,655 |  | $ 298,223 |  |  |
2030 USD Senior notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percentage) | 3.50% | 3.50% | 3.50% |  |  |
Debt issuance costs | $ 6,147 |  |  |  |  |
Long-term debt | $ 493,853 |  | $ 0 |  |  |

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- Definition Amount of short-term and long-term debt and lease obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13,16) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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- Definition Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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