Face (par) amount of debt instrument at time of issuance.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Topic 210

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-Section S99

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-Subparagraph (SX 210.5-02.22(a)(1))

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- 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

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

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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

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-Name Regulation S-X (SX)

-Number 210

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Topic 230

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-Subparagraph (b)

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Notes Payable (Schedule of Notes Payable) (Details) (USD $)	0 Months Ended
	Jul. 31, 2012	Feb. 07, 2012	Jan. 29, 2013	Nov. 30, 2014	Nov. 30, 2013	Jun. 02, 2005	Jul. 30, 2009	Apr. 03, 2006	Mar. 25, 2014	Oct. 29, 2013
Debt Instrument [Line Items]
Notes payable				$ 2,576,525,000us-gaap_NotesAndLoansPayable	$ 2,150,498,000us-gaap_NotesAndLoansPayable
Convertible senior notes due February 1, 2019 at 1.375%
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			1.375%	1.375%	1.375%
Mortgages and land contracts due to land sellers and other loans (at interest rates of 7% at November 30, 2013 and 6% to 7% at November 30, 2012)
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage					700.00%
Notes payable				38,250,000	13,615,000
Mortgages and land contracts due to land sellers and other loans (at interest rates of 7% at November 30, 2013 and 6% to 7% at November 30, 2012) \| Minimum
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				500.00%
Mortgages and land contracts due to land sellers and other loans (at interest rates of 7% at November 30, 2013 and 6% to 7% at November 30, 2012) \| Maximum
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				700.00%
Senior Notes [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount	244,900,000	340,000,000
Senior Notes [Member] \| Senior notes due June 15, 2015 at 6 1/4%
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				6.25%	6.25%
Debt Instrument, Interest Rate, Effective Percentage						6.30%
Notes payable				199,891,000	199,864,000
Debt Instrument, Repurchased Face Amount						199,906,000
Senior Notes [Member] \| Senior notes due September 15, 2017 at 9.10%
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				9.10%	9.10%
Debt Instrument, Interest Rate, Effective Percentage							9.50%
Notes payable				262,729,000	262,048,000
Debt Instrument, Face Amount							265,000,000
Senior Notes [Member] \| Senior notes due June 15, 2018 at 7 1/4%
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				7.25%	7.25%
Debt Instrument, Interest Rate, Effective Percentage								7.30%
Notes payable				299,402,000	299,261,000
Debt Instrument, Face Amount								300,000,000
Senior Notes [Member] \| Senior notes due May 15, 2019 at 4.75%
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				4.75%					4.75%
Debt Instrument, Interest Rate, Effective Percentage									4.80%
Notes payable				400,000,000	0
Debt Instrument, Face Amount									400,000,000
Senior Notes [Member] \| Senior notes due March 15, 2020 at 8.00%
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		8.00%		8.00%	8.00%
Debt Instrument, Interest Rate, Effective Percentage		8.30%
Notes payable				346,253,000	345,710,000
Debt Instrument, Face Amount		350,000,000
Senior Notes [Member] \| Senior notes due December 15, 2021 at 7.00%
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				7.50%	7.50%					7.00%
Debt Instrument, Interest Rate, Effective Percentage										7.00%
Notes payable				450,000,000	450,000,000
Debt Instrument, Face Amount										450,000,000
Senior Notes [Member] \| Senior notes due September 15, 2022 at 7.50%
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.50%			7.00%	7.00%
Debt Instrument, Interest Rate, Effective Percentage	7.50%
Notes payable				350,000,000	350,000,000
Debt Instrument, Face Amount	350,000,000
Convertible Notes Payable [Member] \| Convertible senior notes due February 1, 2019 at 1.375%
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				1.375%	1.375%
Debt Instrument, Interest Rate, Effective Percentage	1.40%
Proceeds from Convertible Debt			222,700,000
Notes payable				230,000,000	230,000,000
Debt Instrument, Face Amount			$ 230,000,000