Contractual interest rate for funds borrowed, under the debt agreement.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Arrangements with Off-Balance Sheet Risk - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	May 31, 2013	Nov. 30, 2012	May 31, 2013 Senior secured notes bearing interest at 7.125% maturing in March 2021 [Member]	Jan. 28, 2013 Senior secured notes bearing interest at 7.125% maturing in March 2021 [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Outstanding commercial letters of credit	$ 44.8
Outstanding surety bonds	39.4	39.3
Guarantee obligations	$ 120.0
Debt instrument interest rate stated percentage			7.125%	7.125%