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Credit Facility, Loans Payable, Senior Notes, Senior Subordinated Notes and Mortgage Company Warehouse Loan Credit Facility, Loans Payable, Senior Notes, Senior Subordinated Notes and Mortgage Company Warehouse Loan (Details 1) (USD $) In Thousands, unless otherwise specified | Oct. 31, 2012 | Sep. 05, 2012 | Oct. 31, 2011
--- | --- | --- | ---
Senior Notes [Abstract] |  |  |
Senior notes | $ 2,080,463 |  | $ 1,490,972
6.875% Senior notes due 2012 [Member] |  |  |
Senior Notes [Abstract] |  |  |
Senior notes | 59,068 |  | 139,776
5.95% Senior notes due 2013 [Member] |  |  |
Senior Notes [Abstract] |  |  |
Senior notes | 104,785 |  | 141,635
4.95% Senior Notes due 2014 [Member] |  |  |
Senior Notes [Abstract] |  |  |
Senior notes | 267,960 |  | 267,960
5.15% Senior Notes due 2015 [Member] |  |  |
Senior Notes [Abstract] |  |  |
Senior notes | 300,000 |  | 300,000
8.91% Senior Notes due 2017 [Member] |  |  |
Senior Notes [Abstract] |  |  |
Senior notes | 400,000 |  | 400,000
6.75% Senior Notes due 2019 [Member] |  |  |
Senior Notes [Abstract] |  |  |
Senior notes | 250,000 |  | 250,000
5.875 % senior notes due 2022 [Member] |  |  |
Senior Notes [Abstract] |  |  |
Senior notes | 419,876 |  |
0.5% Exchangeable Senior Notes Due 2032 [Member] |  |  |
Senior Notes [Abstract] |  |  |
Senior notes | 287,500 | 287,500 |
Senior Notes [Member] |  |  |
Senior Notes [Abstract] |  |  |
Debt Instrument, Unamortized Discount | $ (8,726) |  | $ (8,399)

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- Definition The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number APB14-1 -Paragraph 31 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 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(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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