Goodwill and Intangible Assets - Summary of Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2014		Oct. 31, 2013
Goodwill [Roll Forward]
Beginning Balance	$ 1,975,971		$ 1,976,987
Additions	290,379		0
Other adjustments	(10,642)	[1]	(1,016)	[1]
Ending balance	$ 2,255,708	[2]	$ 1,975,971

[1] Adjustments primarily relate to changes in deferred tax estimates for acquisitions that were closed in the prior fiscal year for which the purchase price allocations were still preliminary, and/or effects of foreign currency fluctuations.

[2] There is no accumulated impairment of goodwill for periods presented.