Summary of Significant Accounting Policies - Variable Interest Entities (Details) - USD ($) $ in Millions	May. 28, 2015	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Variable Interest Entity [Line Items]
Cash and cash equivalents		$ 912	$ 497	$ 755	$ 1,087
Variable Interest Entity Primary Beneficiary, Blue Diamond Parts [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets		50	57
Cash and cash equivalents		7	11
Liabilities		7	5
Variable Interest Entity Primary Beneficiary Blue Diamond Parts And Blue Diamond Truck [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets			240
Cash and cash equivalents			66
Liabilities			245
Variable Interest Entity Primary Beneficiary, Blue Diamond Trucks [Member]
Variable Interest Entity [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	25.00%
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	$ 27
Variable Interest Entity Primary Beneficiary Securitizations Treated As Borrowings [Member] | Financial Services Operations [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets		1,100
Liabilities		844	896
Transaction Does Not Qualify for Sale Accounting [Member] | Financial Services Operations [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets		235	156
Liabilities		$ 107	$ 54