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Mortgages and Notes Payable (Narrative) (Details) (USD $) | 12 Months Ended | 3 Months Ended | 0 Months Ended |  | 0 Months Ended | 3 Months Ended | 0 Months Ended |  |  |  | 0 Months Ended |  |  |  | 0 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended |  |  |  |  |  |  |  | 0 Months Ended |  |  | 0 Months Ended | 12 Months Ended |  |  | 0 Months Ended
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Nov. 30, 2013 | Nov. 30, 2012 | Nov. 30, 2011 | Nov. 30, 2013 Senior notes due February 1, 2014 at 5 3/4% | Nov. 30, 2013 Senior notes due January 15, 2015 at 5 7/8% | Oct. 29, 2013 Senior notes due December 15, 2021 at 7.00% | Jan. 29, 2013 Convertible senior notes due February 1, 2019 at 1.375% | Jul. 31, 2012 Senior Notes [Member] | Feb. 07, 2012 Senior Notes [Member] | Nov. 30, 2013 Senior Notes [Member] | Aug. 31, 2012 Senior Notes [Member] | Feb. 29, 2012 Senior Notes [Member] | Oct. 29, 2013 Senior Notes [Member] Senior notes due February 1, 2014 at 5 3/4% | Nov. 30, 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% | Jan. 28, 2004 Senior Notes [Member] Senior notes due February 1, 2014 at 5 3/4% | Oct. 29, 2013 Senior Notes [Member] Senior notes due January 15, 2015 at 5 7/8% | Nov. 30, 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% | Dec. 15, 2004 Senior Notes [Member] Senior notes due January 15, 2015 at 5 7/8% | Oct. 29, 2013 Senior Notes [Member] Senior notes due June 15, 2015 at 6 1/4% | Nov. 30, 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% | Jun. 27, 2005 Senior Notes [Member] Senior notes due June 15, 2015 at 6 1/4% | Jun. 02, 2005 Senior Notes [Member] Senior notes due June 15, 2015 at 6 1/4% | Nov. 30, 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% | Nov. 30, 2013 Senior Notes [Member] Senior notes due December 15, 2021 at 7.00% | Oct. 29, 2013 Senior Notes [Member] Senior notes due December 15, 2021 at 7.00% | Nov. 30, 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% | Jul. 30, 2009 Senior Notes [Member] Senior notes due September 15, 2017 at 9.10% | Nov. 30, 2011 Senior Notes [Member] Senior notes due 2011 at 6 3/8% | Nov. 30, 2009 Senior Notes [Member] Senior notes due 2011 at 6 3/8% | Jun. 30, 2004 Senior Notes [Member] Senior notes due 2011 at 6 3/8% | Nov. 30, 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% | Apr. 03, 2006 Senior Notes [Member] Senior notes due June 15, 2018 at 7 1/4% | Nov. 30, 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% | Jan. 29, 2013 Convertible Notes Payable [Member] Convertible senior notes due February 1, 2019 at 1.375% | Nov. 30, 2013 Convertible Notes Payable [Member] Convertible senior notes due February 1, 2019 at 1.375% | Aug. 31, 2013 Convertible Notes Payable [Member] Convertible senior notes due February 1, 2019 at 1.375% | Mar. 12, 2013 Revolving Credit Facility [Member] | Nov. 30, 2013 Revolving Credit Facility [Member] | Nov. 30, 2013 Letter of Credit [Member] | Mar. 12, 2013 Letter of Credit [Member] | Mar. 12, 2013 Minimum Revolving Credit Facility [Member] Rate | Mar. 12, 2013 Maximum Revolving Credit Facility [Member] Rate
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Expiration Date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Mar. 12, 2016 |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 300,000,000 |  |  | $ 100,000,000 |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.50% | 0.75%
Line of Credit Facility, Amount Outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 200,000,000 | 100,000,000 |  |  |
Line of Credit Facility, Significant Subsidiary Threshold, Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |
Line of Credit Facility, Non Guarantor Subsidiary Threshold, Percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |
Ownership share in guarantor subsidiaries | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incremental Common Shares Attributable to Conversion of Debt Securities | 7,044,000 | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,401,831 |  |  |  |  |  |  |  |
Percentage of Principal Amount in Relation to Redemption Value of Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |
Percentage of Principal Amount for Purchase of Notes if Fundamental Change |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount | 41,500,000 | 41,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on early extinguishment of debt | 10,448,000 | 10,278,000 | (3,612,000) |  |  |  |  |  |  | (10,400,000) | 8,300,000 | 2,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Primarily inventories carrying value | 37,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 250,000,000 |  |  |  | 300,000,000 |  |  |  | 150,000,000 | 300,000,000 |  |  | 350,000,000 |  | 450,000,000 |  |  | 265,000,000 |  |  |  |  |  | 300,000,000 |  |  | 350,000,000 | 230,000,000 |  |  |  |  |  |  |  |
Extinguishment of Debt, Amount |  |  |  | 56,300,000 | 11,000,000 |  |  | 244,900,000 | 340,000,000 |  |  |  | 19,700,000 |  |  |  | 91,100,000 |  |  |  | 37,000,000 |  |  |  |  |  |  |  |  |  |  |  |  | 100,000,000 | 250,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes, rate |  |  |  |  |  |  | 1.375% |  |  |  |  |  |  | 5.75% | 5.75% | 5.75% |  | 5.88% | 5.88% | 5.875% |  | 6.25% | 6.25% |  | 6.25% | 7.50% | 7.50% | 7.50% | 7.00% | 7.00% | 9.10% | 9.10% | 9.10% |  |  | 6.375% | 7.25% | 7.25% | 7.25% | 8.00% | 8.00% | 8.00% |  |  |  |  |  |  |  |  |
Early Repayment of Senior Debt |  |  |  |  |  | 225,400,000 |  | 252,200,000 | 340,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of principal amount in relation to issued value of senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 99.474% |  |  |  | 99.357% |  |  |  | 100.614% | 99.533% |  |  | 100.00% |  | 100.00% |  |  | 98.014% |  |  |  |  |  | 99.486% |  |  | 98.523% | 100.00% |  |  |  |  |  |  |  |
Percentage of principal amount for purchase of notes if change in control |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 101.00% |  |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 36.5297 |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Conversion Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 27.37 |  |  |  |  |  |  |  |
Conversion Price Premium |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 47.00% |  |  |  |  |  |  |  |
Share Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 18.62 |  |  |  |  |  |  |  |
Proceeds from Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 222,700,000 |  |  |  |  |  |  |  |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2013 | 8,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2014 | 204,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2015 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2016 | 262,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2017 | 299,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due thereafter | $ 1,380,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Definition The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 40 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1930-109256 + Details
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