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Quarterly Financial Data (Unaudited) - Quarterly Financial Data (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Oct. 31, 2020
Jul. 31, 2020
Apr. 30, 2020
Jan. 31, 2020
Oct. 31, 2019
Jul. 31, 2019
Apr. 30, 2019
Jan. 31, 2019
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2018
Quarterly Financial Information Disclosure [Abstract]                      
Sales $ 558,525 $ 538,181 $ 529,478 $ 494,916 $ 585,451 $ 559,746 $ 551,119 $ 497,910 $ 2,121,100 $ 2,194,226 $ 2,254,668
Gross margin 296,868 280,808 289,598 263,194 318,975 302,623 301,529 268,976      
Net income $ 18,475 $ 86,981 $ 92,079 $ 52,004 $ 102,673 $ 93,928 $ 91,923 $ 48,567 $ 249,539 $ 337,091 $ 377,375
Earnings per share:                      
Basic (in dollars per share) $ 0.32 $ 1.51 $ 1.60 $ 0.90 $ 1.79 $ 1.64 $ 1.60 $ 0.84 $ 4.32 $ 5.87 $ 6.51
Diluted (in dollars per share) $ 0.31 $ 1.49 $ 1.58 $ 0.89 $ 1.76 $ 1.62 $ 1.58 $ 0.83 $ 4.27 $ 5.79 $ 6.40