Credit Facility, Loans Payable, Senior Notes, and Mortgage Company Warehouse Loan (Details 1) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013 6.875% Senior notes due 2012 [Member]	Oct. 31, 2012 6.875% Senior notes due 2012 [Member]	Oct. 31, 2013 5.95% Senior notes due 2013 [Member]	Oct. 31, 2012 5.95% Senior notes due 2013 [Member]	Oct. 31, 2013 4.95% Senior Notes due 2014 [Member]	Oct. 31, 2012 4.95% Senior Notes due 2014 [Member]	Oct. 31, 2013 5.15% Senior Notes due 2015 [Member]	Oct. 31, 2012 5.15% Senior Notes due 2015 [Member]	Oct. 31, 2013 8.91% Senior Notes due 2017 [Member]	Oct. 31, 2012 8.91% Senior Notes due 2017 [Member]	Oct. 31, 2013 6.75% Senior Notes due 2019 [Member]	Oct. 31, 2012 6.75% Senior Notes due 2019 [Member]	Oct. 31, 2013 5.875 % senior notes due 2022 [Member]	Oct. 31, 2012 5.875 % senior notes due 2022 [Member]	Oct. 31, 2013 0.5% Exchangeable Senior Notes Due 2032 [Member]	Oct. 31, 2012 0.5% Exchangeable Senior Notes Due 2032 [Member]	Sep. 05, 2012 0.5% Exchangeable Senior Notes Due 2032 [Member]	Oct. 31, 2013 4.375% Senior Notes due 2023 [Member]	May 13, 2013 4.375% Senior Notes due 2023 [Member]	Apr. 03, 2013 4.375% Senior Notes due 2023 [Member]	Oct. 31, 2012 4.375% Senior Notes due 2023 [Member]	Oct. 31, 2013 Senior Notes [Member]	Oct. 31, 2012 Senior Notes [Member]
Senior Notes [Abstract]
Senior notes	$ 2,321,442	$ 2,080,463		$ 59,068		$ 104,785	$ 267,960	$ 267,960	$ 300,000	$ 300,000	$ 400,000	$ 400,000	$ 250,000	$ 250,000	$ 419,876	$ 419,876	$ 287,500	$ 287,500	$ 287,500	$ 400,000	$ 100,000	$ 300,000
Debt Instrument, Unamortized Discount																								$ (3,894)	$ (8,726)