Derivative Instruments - Summary of Gross Notional Values (Details) - Cash flow hedging - Designated as hedging instrument ₱ in Thousands, € in Thousands, ₨ in Thousands, £ in Thousands, $ in Thousands	Feb. 28, 2023 GBP (£)	Feb. 28, 2023 USD ($)	Feb. 28, 2023 EUR (€)	Feb. 28, 2023 INR (₨)	Feb. 28, 2023 PHP (₱)	Aug. 31, 2022 GBP (£)	Aug. 31, 2022 USD ($)	Aug. 31, 2022 EUR (€)	Aug. 31, 2022 INR (₨)	Aug. 31, 2022 PHP (₱)	Mar. 01, 2022 USD ($)	Mar. 05, 2020 USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross notional amount		$ 563,168					$ 756,846
Foreign currency forward contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross notional amount		163,168					156,846
British Pound Sterling
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross notional amount	£ 46,000	55,491				£ 44,200	55,567
Euro
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross notional amount		39,877	€ 37,500				40,679	€ 37,500
Indian Rupee
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross notional amount		36,200		₨ 2,987,143			33,600		₨ 2,667,928
Philippine Peso
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross notional amount		31,600			₱ 1,767,455		27,000			₱ 1,462,060
Interest rate swap agreement
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gross notional amount		$ 400,000					$ 600,000				$ 800,000	$ 287,500