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Components of Provision for Income Tax Expense or Benefit (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2019 | Jan. 31, 2018 | Jan. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
Current, Federal | $ 71,520 | $ 124,988 | $ 103,951
Current, State | 18,088 | 10,772 | 15,130
Current, Foreign | 9,356 | 9,014 | 5,699
Current income tax expense, total | 98,964 | 144,774 | 124,780
Deferred, Federal | (6,818) | 10,270 | (5,765)
Deferred, State | 965 | (1,914) | 1,029
Deferred, Foreign | (5,561) | (27) | (65)
Deferred income tax expense (benefit), total | (11,414) | 8,329 | (4,801)
Income tax expense (benefit), total | $ 87,550 | $ 153,103 | $ 119,979

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