Operating Segments - Sales Information by Geographic Regions (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Net external sales
Net external sales	$ 553,706	$ 496,137	$ 1,104,130	$ 903,607
United States [Member]
Net external sales
Net external sales	178,821	156,095	344,652	281,616
Americas [Member]
Net external sales
Net external sales	38,959	36,326	73,238	66,368
Europe [Member]
Net external sales
Net external sales	154,736	128,468	296,674	247,627
Japan [Member]
Net external sales
Net external sales	33,030	30,855	98,899	55,032
Asia Pacific [Member]
Net external sales
Net external sales	$ 148,160	$ 144,393	$ 290,667	$ 252,964