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Mortgages and Notes Payable (Schedule Mortgages and Notes Payable) (Details) (USD $)	Aug. 31, 2014	Nov. 30, 2013	Jan. 29, 2013 Convertible Senior Notes Due Two Thousand Nineteen At One Point Three Seven Five Percent [Member] [Member]	Aug. 31, 2014 Mortgages and Land Contracts Due to Land Sellers and Other Loans [Member]	Nov. 30, 2013 Mortgages and Land Contracts Due to Land Sellers and Other Loans [Member]	Aug. 31, 2014 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%	Aug. 31, 2014 Senior Notes [Member] Senior notes due September 15, 2017 at 9.10%	Nov. 30, 2013 Senior Notes [Member] Senior notes due September 15, 2017 at 9.10%	Aug. 31, 2014 Senior Notes [Member] Senior notes due June 15, 2018 at 7 1/4%	Nov. 30, 2013 Senior Notes [Member] Senior notes due June 15, 2018 at 7 1/4%	Aug. 31, 2014 Senior Notes [Member] Senior notes due March 15, 2020 at 8.00%	Nov. 30, 2013 Senior Notes [Member] Senior notes due March 15, 2020 at 8.00%	Aug. 31, 2014 Senior Notes [Member] Senior Notes due December 15, 2021 at 7.00%	Nov. 30, 2013 Senior Notes [Member] Senior Notes due December 15, 2021 at 7.00%	Aug. 31, 2014 Senior Notes [Member] Senior Notes Due Two Thousand Nineteen at Four Point Seven Five Percent [Member]	Mar. 25, 2014 Senior Notes [Member] Senior Notes Due Two Thousand Nineteen at Four Point Seven Five Percent [Member]	Nov. 30, 2013 Senior Notes [Member] Senior Notes Due Two Thousand Nineteen at Four Point Seven Five Percent [Member]	Aug. 31, 2014 Senior Notes [Member] Senior notes due September 15, 2022 at 7.50%	Nov. 30, 2013 Senior Notes [Member] Senior notes due September 15, 2022 at 7.50%	Aug. 31, 2014 Convertible Notes Payable [Member] Convertible Senior Notes Due Two Thousand Nineteen At One Point Three Seven Five Percent [Member] [Member]	Nov. 30, 2013 Convertible Notes Payable [Member] Convertible Senior Notes Due Two Thousand Nineteen At One Point Three Seven Five Percent [Member] [Member]	Jan. 29, 2013 Convertible Notes Payable [Member] Convertible Senior Notes Due Two Thousand Nineteen At One Point Three Seven Five Percent [Member] [Member]	Aug. 31, 2014 Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding																								$ 0
Senior notes, rate			1.375%			6.25%	6.25%	9.10%	9.10%	7.25%	7.25%	8.00%	8.00%	7.00%	7.00%	4.75%			7.50%	7.50%	1.375%	1.375%
Mortgages and notes payable	2,580,800,000	2,150,498,000		42,884,000	13,615,000	199,884,000	199,864,000	262,553,000	262,048,000	299,366,000	299,261,000	346,113,000	345,710,000	450,000,000	450,000,000	400,000,000		0	350,000,000	350,000,000	230,000,000	230,000,000
Percentage of Principal Amount in Relation to Issued Value of Senior Notes																	100.00%						100.00%
Debt Instrument, Face Amount																	$ 400,000,000.0						$ 230,000,000

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- Definition

Percentage of principal amount in relation to issued value of senior notes.

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No definition available.

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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

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Contractual interest rate for funds borrowed, under the debt agreement.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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Amount borrowed under the credit facility as of the balance sheet date.

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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).

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