Quarterly Financial Data (Unaudited) - Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Sales	$ 446,200	$ 462,731	$ 400,727	$ 379,008	$ 468,590	$ 458,550	$ 417,461	$ 359,420	$ 1,688,666	$ 1,704,021	$ 1,542,921
Gross margin	234,861	248,492	221,890	208,721	257,253	257,511	235,552	194,782
Net income	$ 49,624	$ 69,388	$ 49,214	$ 42,885	$ 72,080	$ 77,879	$ 61,934	$ 34,880	$ 211,111	$ 246,773	$ 221,817
Earnings per share:
Basic	$ 0.84	$ 1.15	$ 0.81	$ 0.69	$ 1.14	$ 1.23	$ 0.97	$ 0.54	$ 3.48	$ 3.88	$ 3.45
Diluted	$ 0.84	$ 1.14	$ 0.80	$ 0.69	$ 1.13	$ 1.21	$ 0.96	$ 0.54	$ 3.45	$ 3.84	$ 3.42