Supplemental Guarantor Information (Narrative) (Details) (USD $)	3 Months Ended
Feb. 28, 2014	Jan. 29, 2013 Convertible Notes Payable [Member] Convertible Senior Notes Due Two Thousand Nineteen At One Point Three Seven Five Percent [Member] [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 230,000,000
Ownership share in guarantor subsidiaries (percent)	100.00%
Line of credit facility, significant subsidiary threshold, percent	5.00%
Line of credit facility, non guarantor subsidiary threshold, percent	10.00%

Face (par) amount of debt instrument at time of issuance.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant