Common Stock Repurchase (Details) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended
	Jan. 31, 2015
Common Stock Repurchase (Textual) [Abstract]
Amount authorized to repurchase company's common stock	$ 5,600,000,000
Number of company's common stock repurchased	138.1
Amount paid for repurchase of company's common stock	4,900,000,000
Remaining amount to repurchase company common stock under authorized program	$ 693,200,000