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Debt - Senior Notes (Details) |  |  |  |  | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 11, 2017 USD ($) | Jan. 15, 2016 USD ($) | Jun. 09, 2015 USD ($) | Jan. 31, 2013 USD ($) | Sep. 30, 2017 USD ($) | Oct. 01, 2016 USD ($) | Sep. 11, 2017 EUR (€) | Jun. 09, 2015 EUR (€) | Dec. 31, 2014 USD ($) | Jan. 17, 2006 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Payment of financing costs |  |  |  |  | $ 1,400,000 | $ 1,086,000 |  |  |  |
Floating Rate Notes due September 11, 2019 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Aggregate principal amount of debts | € |  |  |  |  |  |  | € 300,000,000 |  |  |
Payment of financing costs | $ 833,000 |  |  |  |  |  |  |  |  |
2.00% Senior Notes due January 14, 2022 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Aggregate principal amount of debts | € |  |  |  |  |  |  |  | € 500,000,000 |  |
Payment of financing costs |  |  | $ 4,218,000 |  |  |  |  |  |  |
Interest rate percentage |  |  |  |  | 2.00% |  |  | 2.00% |  |
3.85% Senior Notes due February 1, 2023 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Aggregate principal amount of debts |  |  |  | $ 600,000,000 |  |  |  |  |  |
Payment of financing costs |  |  |  | $ 6,000,000 |  |  |  |  |  |
Interest rate percentage |  |  |  | 3.85% | 3.85% |  |  |  |  |
6.125% Senior Notes Payable January 14, 2022 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Aggregate principal amount of debts |  |  |  |  |  |  |  |  |  | $ 900,000,000
Interest rate percentage |  |  |  |  |  |  |  |  |  | 6.125%
Aggregate principal amount |  |  |  |  |  |  |  |  | $ 254,445,000 |
Repayment of outstanding principal |  | $ 645,555,000 |  |  |  |  |  |  |  |
Minimum | Euro Interbank Offered Rate (EURIBOR) | Floating Rate Notes due September 11, 2019 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on debt instrument | 0.30% |  |  |  |  |  |  |  |  |

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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=6877327&loc=d3e13212-122682 + Details
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