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Prepaid expenses and other current assets - Schedule of prepaid expenses and other current assets (Detail) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
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Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |
Advance income and non-income taxes | $ 106,192 | $ 73,008
Contract asset | 9,942 | 9,035
Prepaid expenses | 40,738 | 32,375
Derivative instruments | 12,900 | 21,545
Employee advances | 4,259 | 2,636
Deposits | 5,169 | 8,774
Advances to suppliers | 1,000 | 2,716
Others | 21,398 | 37,319
Prepaid expenses and other current assets, net | $ 201,598 | $ 187,408

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