Stock Repurchase Program - Stock Repurchase Activities (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 31, 2016		Jan. 31, 2015
Stock Repurchase Program
Shares repurchased (in shares)	3,849		3,290
Total cost of the repurchased shares	$ 180,000	[1]	$ 144,000
Reissuance of treasury stock (in shares)	200		782

[1] The first quarter of fiscal 2016 includes the settlement of the $20.0 million equity forward contract related to the above-referenced August 2015 ASR and does not include the $40.0 million equity forward contract related to the above-referenced December 2015 ASRs.