Weighted Average Remaining Lives (Detail)	12 Months Ended
Oct. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (Years)	10 years 7 months 6 days
Customer contracts and relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (Years)	10 years 7 months 6 days
Trademarks and Trade Names
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (Years)	4 years 3 months 18 days
Contract Rights and Other
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (Years)	2 years 4 months 24 days

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration