| Income Taxes - Schedule of Provision for Income Taxes (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 28, 2017 | Oct. 29, 2016 | Jul. 30, 2016 | Apr. 30, 2016 | Jan. 30, 2016 | Oct. 31, 2015 | Aug. 01, 2015 | May 02, 2015 | Jan. 28, 2017 | Jan. 30, 2016 | Jan. 31, 2015 | |
| Current: | |||||||||||
| Federal | $ 194,199 | $ 163,048 | $ 128,159 | ||||||||
| State | 24,835 | 18,694 | 16,909 | ||||||||
| Total current | 219,034 | 181,742 | 145,068 | ||||||||
| Deferred: | |||||||||||
| Federal | 24,480 | 6,981 | 8,392 | ||||||||
| State | 2,440 | (1,291) | 714 | ||||||||
| Total deferred | 26,920 | 5,690 | 9,106 | ||||||||
| Provision for income taxes | $ 84,128 | $ 52,310 | $ 54,013 | $ 55,503 | $ 61,936 | $ 39,982 | $ 44,567 | $ 40,947 | $ 245,954 | $ 187,432 | $ 154,174 | 
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- Definition Provision For Deferred Income Tax No definition available. 
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- Definition Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- References No definition available. 
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- Definition Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- References No definition available. 
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- Definition Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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