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Supplemental Guarantor Information (Narrative) (Details) (USD $) | 3 Months Ended |
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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% |

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- Definition Face (par) amount of debt instrument at time of issuance. + References 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 + Details
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