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Derivative Financial Instruments - Outstanding Currency, Forward Exchange Contracts (Detail) - Foreign Currency Forward Contracts - USD ($) $ in Thousands | Jan. 31, 2022 | Jan. 31, 2021
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Sell |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | $ 166,300 | $ 238,626
Buy |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | 614,920 | 569,636
Euro | Sell |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | 102,132 | 122,414
Euro | Buy |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | 338,128 | 270,516
British pound | Sell |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | 34,657 | 20,206
British pound | Buy |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | 70,869 | 60,579
Japanese yen | Sell |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | 12,315 | 25,011
Japanese yen | Buy |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | 40,384 | 42,370
Australian dollar | Sell |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | 325 | 193
Australian dollar | Buy |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | 10,026 | 9,255
Hong Kong dollar | Sell |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | 0 | 60,949
Hong Kong dollar | Buy |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | 49,595 | 88,915
Singapore dollar | Sell |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | 1,079 | 204
Singapore dollar | Buy |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | 18,214 | 16,983
Others | Sell |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | 15,792 | 9,649
Others | Buy |  |
Derivative [Line Items] |  |
Notional Amounts of foreign currency derivative contracts | $ 87,704 | $ 81,018

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