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Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities - Hedge of Net Investment (Details) € in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2020 EUR (€) | Jun. 30, 2019 EUR (€)
Derivative [Line Items] |  |  |  |  |  |
Foreign exchange losses (gains) associated with net investment hedge | $ 6,854 | $ 4,280 | $ 401 | $ (1,861) |  |
Net Investment Hedges |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Cumulative net gains | 3,326 |  | 3,326 |  |  |
Euro Notes | Net Investment Hedges | Designated as Hedging Instrument |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Hedged notes | € |  |  |  |  | € 300,000 | € 274,161
Cumulative net gains | $ 19,860 |  | $ 19,860 |  |  |

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- Definition Amount, before tax, of increase (decrease) in the cumulative translation adjustment from gain (loss) on foreign currency derivatives that are designated as, and are effective as, economic hedges of a net investment in a foreign entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 35 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121605123&loc=d3e30304-110892 + Details
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- Definition Amount, after tax, of cumulative translation adjustment attributable to gain (loss) on foreign currency derivatives that are designated as, and are effective as, economic hedges of a net investment in a foreign entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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