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Share-Based Compensation (Share Repurchase Program) (Details) - USD ($)
3 Months Ended 12 Months Ended 32 Months Ended
Oct. 31, 2020
May 02, 2020
Nov. 02, 2019
Aug. 03, 2019
Feb. 01, 2020
Oct. 31, 2020
Mar. 20, 2018
Share-based Payment Arrangement [Abstract]              
Authorized amount             $ 100,000,000
Repurchase and retirement of common stock (in shares) 0 137,023     337,552 500,000  
Repurchase and retirement of common stock   $ 12,663,000 $ 20,286,000 $ 16,599,000 $ 36,900,000 $ 50,000,000  
Average price (dollars per share)   $ 92.42     $ 109.27