Summary of Significant Accounting Policies - Variable Interest Entities (Details) - USD ($) $ in Millions	May 28, 2015	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Variable Interest Entity [Line Items]
Cash and cash equivalents		$ 804	$ 912	$ 497	$ 755
Variable Interest Entity Primary Beneficiary, Blue Diamond Parts [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets		51	50
Cash and cash equivalents		6	7
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities		16	7
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
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets		900	1,100
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities		722	844
Transaction Does Not Qualify for Sale Accounting [Member] | Financial Services Operations
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets		249	235
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities		$ 136	$ 107