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Mortgages and Notes Payable (Schedule Mortgages and Notes Payable) (Details) (USD $) In Thousands, unless otherwise specified | Feb. 28, 2013 | Nov. 30, 2012 | Feb. 28, 2013 Mortgages and land contracts due to land sellers and other loans | Nov. 30, 2012 Mortgages and land contracts due to land sellers and other loans | Feb. 28, 2013 Senior notes due February 1, 2014 at 5 3/4% | Nov. 30, 2012 Senior notes due February 1, 2014 at 5 3/4% | Feb. 28, 2013 Senior notes due January 15, 2015 at 5 7/8% | Nov. 30, 2012 Senior notes due January 15, 2015 at 5 7/8% | Feb. 28, 2013 Senior notes due June 15, 2015 at 6 1/4% | Nov. 30, 2012 Senior notes due June 15, 2015 at 6 1/4% | Feb. 28, 2013 Senior notes due September 15, 2017 at 9.10% | Nov. 30, 2012 Senior notes due September 15, 2017 at 9.10% | Feb. 28, 2013 Senior notes due June 15, 2018 at 7 1/4% | Nov. 30, 2012 Senior notes due June 15, 2018 at 7 1/4% | Feb. 28, 2013 Senior notes due March 15, 2020 at 8.00% | Nov. 30, 2012 Senior notes due March 15, 2020 at 8.00% | Feb. 07, 2012 Senior notes due March 15, 2020 at 8.00% | Feb. 28, 2013 Senior notes due September 15, 2022 at 7.50% | Nov. 30, 2012 Senior notes due September 15, 2022 at 7.50% | Jul. 31, 2012 Senior notes due September 15, 2022 at 7.50% | Feb. 28, 2013 Convertible senior notes due February 1, 2019 at 1.375% | Jan. 29, 2013 Convertible senior notes due February 1, 2019 at 1.375% | Nov. 30, 2012 Convertible senior notes due February 1, 2019 at 1.375%
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Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes, rate |  |  |  |  | 5.75% | 5.75% | 5.875% | 5.875% | 6.25% | 6.25% | 9.10% | 9.10% | 7.25% | 7.25% | 8.00% | 8.00% | 8.00% | 7.50% | 7.50% | 7.50% | 1.375% | 1.375% |
Mortgages and notes payable | $ 1,963,753 | $ 1,722,815 | $ 62,908 | $ 52,311 | $ 75,923 | $ 75,911 | $ 102,018 | $ 101,999 | $ 236,833 | $ 236,826 | $ 261,579 | $ 261,430 | $ 299,161 | $ 299,129 | $ 345,331 | $ 345,209 |  | $ 350,000 | $ 350,000 |  | $ 230,000 |  |

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- Definition Interest rate stated in the contractual debt agreement. + References 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 + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of all notes and loans payable (with maturities initially due after one year or beyond the operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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