Stockholders' Deficit (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2014	Jul. 31, 2013
Class of Stock [Line Items]
Proceeds from Issuance of Common Stock	$ 14	$ 192	$ 0	$ 14
Common Stock [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	763,534	10,666,666
Share Price	$ 18.75	$ 18.75