Business Combinations and Acquisition of Non-controlling Interest (Other Fiscal 2012 Acquisitions) - Additional Information (Detail) (USD $)	12 Months Ended
	Oct. 31, 2012 company	Oct. 31, 2014		Oct. 31, 2013
Business Acquisition [Line Items]
Goodwill arising from acquisition	$ 1,976,987,000	$ 2,255,708,000	[1]	$ 1,975,971,000
Other 2012 Acquisitions
Business Acquisition [Line Items]
Number of acquisitions completed	5
Total purchase consideration	213,200,000
Goodwill arising from acquisition	118,100,000
Identifiable intangibles assets acquired	73,300,000
Acquisition-related costs	$ 6,800,000
Other 2012 Acquisitions | Minimum
Business Acquisition [Line Items]
Definite lived intangible asset amortization period	1 year
Other 2012 Acquisitions | Maximum
Business Acquisition [Line Items]
Definite lived intangible asset amortization period	8 years

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