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Mortgages and Notes Payable (Schedule Mortgages and Notes Payable) (Details) (USD $)	Feb. 28, 2014	Nov. 30, 2013	Jan. 29, 2013
Debt Instrument [Line Items]
Mortgages and notes payable	$ 2,175,190,000	$ 2,150,498,000
Convertible Senior Notes Due Two Thousand Nineteen At One Point Three Seven Five Percent [Member] [Member]
Debt Instrument [Line Items]
Senior notes, rate			1.375%
Mortgages and Land Contracts Due to Land Sellers and Other Loans [Member]
Debt Instrument [Line Items]
Mortgages and notes payable	37,970,000	13,615,000
Senior Notes [Member] | Senior notes due February 1, 2014 at 5 3/4%
Debt Instrument [Line Items]
Senior notes, rate		5.75%
Senior Notes [Member] | Senior notes due January 15, 2015 at 5 7/8%
Debt Instrument [Line Items]
Senior notes, rate		5.875%
Senior Notes [Member] | Senior notes due June 15, 2015 at 6 1/4%
Debt Instrument [Line Items]
Senior notes, rate	6.25%	6.25%
Mortgages and notes payable	199,870,000	199,864,000
Senior Notes [Member] | Senior notes due September 15, 2017 at 9.10%
Debt Instrument [Line Items]
Senior notes, rate	9.10%	9.10%
Mortgages and notes payable	262,213,000	262,048,000
Senior Notes [Member] | Senior notes due June 15, 2018 at 7 1/4%
Debt Instrument [Line Items]
Senior notes, rate	7.25%	7.25%
Mortgages and notes payable	299,295,000	299,261,000
Senior Notes [Member] | Senior notes due March 15, 2020 at 8.00%
Debt Instrument [Line Items]
Senior notes, rate	8.00%	8.00%
Mortgages and notes payable	345,842,000	345,710,000
Senior Notes [Member] | Senior Notes due December 15, 2021 at 7.00%
Debt Instrument [Line Items]
Senior notes, rate	7.00%	7.00%
Mortgages and notes payable	450,000,000	450,000,000
Senior Notes [Member] | Senior notes due September 15, 2022 at 7.50%
Debt Instrument [Line Items]
Senior notes, rate	7.50%	7.50%
Mortgages and notes payable	350,000,000	350,000,000
Convertible Notes Payable [Member] | Convertible Senior Notes Due Two Thousand Nineteen At One Point Three Seven Five Percent [Member] [Member]
Debt Instrument [Line Items]
Senior notes, rate			1.375%
Mortgages and notes payable	230,000,000	230,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	$ 0

X

- Definition

Contractual interest rate for funds borrowed, under the 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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X

- 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

+ Details

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X

- 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 SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5



Reference 3: 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

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