Note 23 (Details) (USD $)	Jul. 31, 2013	Oct. 31, 2012		Feb. 09, 2011	Jul. 31, 2013 Net [Member] Subsidiary Issuer [Member]	Jul. 31, 2013 Subsidiary Issuer [Member] Senior Notes [Member]	Jul. 31, 2013 Subsidiary Issuer [Member]	Jul. 31, 2013 Fair Value, Inputs, Level 3 [Member] Senior Amortizing Notes [Member]	Jul. 31, 2013 Tangible Equity Units [Member]	Jul. 31, 2013 Senior Exchangeable Notes Due 2017 [Member]	Jul. 31, 2013 The 6.00% Exchangable Note Units [Member]	Oct. 02, 2012 The 6.00% Exchangable Note Units [Member]
Note 23 (Details) [Line Items]
Tangible Equity Units, Rate	7.25%			7.25%					7.25%
Number of Wholly Owned Subsidiaries	1
Debt Instrument, Face Amount						$ 460,600,000	$ 992,000,000			$ 65,800,000		$ 100,000,000
Secured Debt	978,300,000				978,300,000
Senior Notes, Unsecured	459,100,000				459,100,000			20,900,000		65,800,000
Debt Instrument, Interest Rate, Stated Percentage											6.00%	6.00%
Subordinated Debt	$ 3,181,000	$ 6,091,000	[1]				$ 3,200,000		$ 3,200,000

[1] Derived from the audited balance sheet as of October 31, 2012.