Credit Facility, Senior Notes and Mortgage Company Loan Facility Credit Facility (Details Textual) (USD $)	0 Months Ended	3 Months Ended		3 Months Ended	12 Months Ended
	Feb. 12, 2014	Jan. 31, 2014	Feb. 03, 2014	Jan. 31, 2014 New Credit Facility [Member]	Oct. 31, 2013 New Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity					$ 1,035,000,000
Line of Credit Facility, term of contract					5 years
Line of Credit Facility, Number of Banks included					15
Line of Credit Facility, Expiration Date				Aug. 01, 2018
Line of credit facility, available for letters of credit					0.75
Mortgage Loan Facility Maximum Borrowing Capacity Increased					2,000,000,000
Maximum Permissible Leverage Ratio				1.75 to 1.00
Minimum Net Worth Required for Compliance					2,419,000,000
Existing Leverage Ratio		0.51 to 1.00
Tangible Net Worth		3,574,547,000
Line of Credit Facility, Amount Outstanding		0	370,000,000
Ability to repurchase common stock				1,668,000,000
Letters of Credit Outstanding, Amount		83,600,000		71,061,000
Repayments of Lines of Credit	$ 170,000,000