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Exercise Price of Service-Based Stock Options Granted (Detail) - $ / shares
12 Months Ended
Feb. 01, 2020
Feb. 02, 2019
Feb. 03, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]      
Options granted, exercise price lower range $ 145.08 $ 113.80 $ 80.91
Options granted, exercise price upper range $ 231.86 $ 172.40 $ 110.50