Debt - Financial Services Operations (Details) (USD $) In Millions, unless otherwise specified	Apr. 30, 2013	Oct. 31, 2012
Debt Instrument [Line Items]
Debt, Current	$ 779	$ 1,205
Long-term Debt and Capital Lease Obligations	4,002	3,566
Financial Services Operations [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Long-term Debt	805	994
Financial Services Operations [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Long-term Debt	861	763
Financial Services Operations [Member] | Commercial Paper [Member]
Debt Instrument [Line Items]
Long-term Debt	0	31
Financial Services Operations [Member] | Borrowings Secured By Operating and Finance Leases [Member]
Debt Instrument [Line Items]
Long-term Debt	65	78
Financial Services Operations [Member] | Debt [Member]
Debt Instrument [Line Items]
Long-term Debt	1,731	1,866
Debt, Current	657	1,033
Long-term Debt and Capital Lease Obligations	$ 1,074	$ 833