Financial Instruments and Commodity Contracts (Income Statement Location) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized	$ (7)	$ (2)	$ (11)	$ 21
Cross Currency Interest Rate Contract [Member] | Other Income, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized	0	0	1	0
Foreign Currency Contract [Member] | Other Income, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized	(2)	(1)	(5)	0
Forward Contracts [Member] | Commodity Contract [Member] | Cost of Products Sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized	$ (5)	$ (1)	$ (7)	$ 21