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Components of Provision for Income Tax Expense or Benefit (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2018 | Jan. 31, 2017 | Jan. 31, 2016
Income Tax Disclosure [Abstract] |  |  |
Current, Federal | $ 124,988 | $ 103,951 | $ 84,274
Current, State | 10,772 | 15,130 | 21,391
Current, Foreign | 9,014 | 5,699 | 6,215
Current income tax expense, total | 144,774 | 124,780 | 111,880
Deferred, Federal | 10,270 | (5,765) | 13,985
Deferred, State | (1,914) | 1,029 | (1,218)
Deferred, Foreign | (27) | (65) | 895
Deferred income tax expense (benefit), total | 8,329 | (4,801) | 13,662
Income tax expense (benefit), total | $ 153,103 | $ 119,979 | $ 125,542

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- Definition Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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