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Fair Value of Financial Instruments - Additional Information (Details) $ in Thousands, $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 AUD ($)
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |  |
Foreign currency forward contracts, assets | $ 3,895 |  | $ 3,895 |  | $ 7,401 |
Foreign currency forward contracts, liabilities | 1,834 |  | 1,834 |  | 3,613 |
Recognized gains (losses) of foreign currency forward contracts designated as hedging instruments | 6,993 | $ 0 | (6,822) | $ 0 |  |
Forward contracts | Other, net |  |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |  |
Cash settlements |  |  | (15,700) | (25,500) |  |
Designated as Hedging Instrument | Forward contracts |  |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |  |
Derivative, notional amount | 187,300 |  | 187,300 |  | 481,200 | $ 727.9
Fair value foreign currency forward contracts designated as hedging instruments, asset | 2,820 |  | 2,820 |  | 5,369 |
Fair value foreign currency forward contracts designated as hedging instruments, liabilities | 0 |  | 0 |  | 0 |
Recognized gains (losses) of foreign currency forward contracts designated as hedging instruments | 6,993 | 0 | (6,822) | 0 |  |
Designated as Hedging Instrument | Forward contracts | Other current assets |  |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |  |
Fair value foreign currency forward contracts designated as hedging instruments, asset | 2,500 |  | 2,500 |  | 3,700 |
Designated as Hedging Instrument | Forward contracts | Other assets |  |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |  |
Fair value foreign currency forward contracts designated as hedging instruments, asset | 300 |  | 300 |  | 1,700 |
Not Designated as Hedging Instrument | Forward contracts |  |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |  |
Derivative, notional amount | 658,100 |  | 658,100 |  | 1,150,000 |
Fair value foreign currency forward contracts not designated as hedging instruments, asset | 1,075 |  | 1,075 |  | 2,032 |
Fair value foreign currency forward contracts not designated as hedging instruments, liabilities | 1,834 |  | 1,834 |  | 3,613 |
Not Designated as Hedging Instrument | Forward contracts | Other current assets |  |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |  |
Fair value foreign currency forward contracts not designated as hedging instruments, asset | 1,100 |  | 1,100 |  | 2,000 |
Not Designated as Hedging Instrument | Forward contracts | Accrued expenses |  |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |  |
Fair value foreign currency forward contracts not designated as hedging instruments, liabilities | 1,800 |  | 1,800 |  | $ 3,600 |
Not Designated as Hedging Instrument | Forward contracts | Other (expenses) income, net |  |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |  |
Recognized (losses) gains of foreign currency forward contracts not designated as hedging instruments | $ 3,102 | $ (19,331) | $ (5,201) | $ (27,647) |  |

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