Stockholders' Equity, Comprehensive Income and Share-Based Compensation (Stock Repurchase Program) (Details) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Jan. 31, 2016 USD ($) $ / shares shares
Equity, Class of Treasury Stock [Line Items]
Cost of stock repurchased	$ 625
Treasury Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Shares of common stock repurchased | shares	35
Cost of stock repurchased	$ 625
Average price paid per share | $ / shares	$ 17.64