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Mortgages and Notes Payable (Schedule Mortgages and Notes Payable) (Details) (USD $) | Aug. 31, 2013 | Nov. 30, 2012 | Jan. 29, 2013 Convertible senior notes due February 1, 2019 at 1.375% | Aug. 31, 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 | Aug. 31, 2013 Senior Notes [Member] Senior notes due February 1, 2014 at 5 3/4% | Nov. 30, 2012 Senior Notes [Member] Senior notes due February 1, 2014 at 5 3/4% | Aug. 31, 2013 Senior Notes [Member] Senior notes due January 15, 2015 at 5 7/8% | Nov. 30, 2012 Senior Notes [Member] Senior notes due January 15, 2015 at 5 7/8% | Aug. 31, 2013 Senior Notes [Member] Senior notes due June 15, 2015 at 6 1/4% | Nov. 30, 2012 Senior Notes [Member] Senior notes due June 15, 2015 at 6 1/4% | Aug. 31, 2013 Senior Notes [Member] Senior notes due September 15, 2017 at 9.10% | Nov. 30, 2012 Senior Notes [Member] Senior notes due September 15, 2017 at 9.10% | Aug. 31, 2013 Senior Notes [Member] Senior notes due June 15, 2018 at 7 1/4% | Nov. 30, 2012 Senior Notes [Member] Senior notes due June 15, 2018 at 7 1/4% | Aug. 31, 2013 Senior Notes [Member] Senior notes due March 15, 2020 at 8.00% | Nov. 30, 2012 Senior Notes [Member] Senior notes due March 15, 2020 at 8.00% | Feb. 07, 2012 Senior Notes [Member] Senior notes due March 15, 2020 at 8.00% | Aug. 31, 2013 Senior Notes [Member] Senior notes due September 15, 2022 at 7.50% | Nov. 30, 2012 Senior Notes [Member] Senior notes due September 15, 2022 at 7.50% | Jul. 31, 2012 Senior Notes [Member] Senior notes due September 15, 2022 at 7.50% | Aug. 31, 2013 Convertible Notes Payable [Member] Convertible senior notes due February 1, 2019 at 1.375% | Nov. 30, 2012 Convertible Notes Payable [Member] Convertible senior notes due February 1, 2019 at 1.375% | Aug. 31, 2013 Revolving Credit Facility [Member]
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Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Amount Outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0
Senior notes, rate |  |  | 1.375% |  |  | 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% |  |
Mortgages and notes payable | $ 1,937,057,000 | $ 1,722,815,000 |  | $ 35,506,000 | $ 52,311,000 | $ 75,949,000 | $ 75,911,000 | $ 102,058,000 | $ 101,999,000 | $ 236,848,000 | $ 236,826,000 | $ 261,888,000 | $ 261,430,000 | $ 299,227,000 | $ 299,129,000 | $ 345,581,000 | $ 345,209,000 |  | $ 350,000,000 | $ 350,000,000 |  | $ 230,000,000 | $ 0 |

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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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