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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]
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

X

- 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

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- Definition

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

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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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

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

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