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Summary of Effects of Foreign Currency Foreign Exchange Contracts on Result of Operations (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Designated As Hedging Instrument | Net Investment Hedge | Foreign Currency Foreign Exchange Contracts |  |
Derivative Instruments Gain Loss [Line Items] |  |
Gain/(Loss) recognized in AOCI | $ (21,114) | $ 40,546

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