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Financial Instruments - Additional Information (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
May 02, 2020
Oct. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]    
Hedge of diesel fuel requirement, remainder of fiscal year 2021   40.00%
Hedge of diesel fuel requirement, first three months of fiscal year 2022   41.00%
Foreign currency exchange contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain on derivatives settlement $ 24.8  
Term of derivative contracts   30 days