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Fair Value - Additional Information (Detail) $ in Thousands	3 Months Ended
	Apr. 30, 2020 USD ($) Location	Apr. 30, 2019 USD ($)	Jan. 31, 2020 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of retail locations | Location	39
Impairment charges	$ 14,528	$ 0
Right-of-use assets, Carrying value	$ 1,116,597	$ 1,088,290	$ 1,170,531
COVID-19
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of retail locations | Location	39
Right-of-use assets, Carrying value	$ 96,523

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- Definition

Number of Retail Locations

+ References

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of lessee's right to use underlying asset under operating lease.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
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