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Stock Option Transactions (Detail)
 9 Months Ended
Oct. 30, 2021
$ / shares
shares
Number of Shares  
Options Outstanding at Beginning of Period | shares 1,346,775
Options Granted | shares 209,244
Options Exercised | shares (346,436) [1]
Options Forfeited | shares (36,961)
Options Outstanding at End of Period | shares 1,172,622
Weighted Average Exercise Price Per Share  
Options Outstanding at Beginning of Period | $ / shares $ 133.86
Options Granted | $ / shares 315.81
Options Exercised | $ / shares 91.24 [1]
Options Forfeited | $ / shares 192.20
Options Outstanding at End of Period | $ / shares $ 177.08
[1] Options exercised during the nine month period ended October 30, 2021 had a total intrinsic value of $75.0 million.