Commitments and Contingencies - Narrative (Details) R$ in Millions		1 Months Ended		3 Months Ended						9 Months Ended	12 Months Ended
	Jul. 16, 2015 USD ($)	Oct. 31, 2016 members	Mar. 31, 2014 BRL (R$)	Oct. 31, 2018 USD ($)	Jul. 31, 2017 USD ($)	Oct. 31, 2016 USD ($) lawsuits	Jul. 31, 2014 lawsuits	Jan. 31, 2014 USD ($)	Jul. 31, 2010 BRL (R$)	Jul. 31, 2018 USD ($)	Oct. 31, 2018 USD ($) dealer	Oct. 31, 2018 BRL (R$) dealer	Oct. 31, 2017 USD ($)	Oct. 31, 2016 USD ($)
Loss Contingencies [Line Items]
Gain from Settlement, Gross											$ 85,000,000
Selling, general and administrative expenses											922,000,000		$ 878,000,000	$ 802,000,000
Loss Contingency, Civil Penalty Sought, Per Violation	$ 37,500
Loss Contingency, Number of Plaintiffs | members		2
Loss Contingency, New Claims Filed, Number | lawsuits						2	17
Equipment leased to others				$ 665,000,000							665,000,000		586,000,000
Long-term Debt				5,467,000,000							5,467,000,000
Available stand-by letters of credit and surety bonds				122,000,000							122,000,000
Purchase commitments				162,000,000							162,000,000
Long Term Purchase Commitment Cancellation Fees											16,000,000
Securities Sold under Agreements to Repurchase, Amount Offset Against Collateral				228,000,000							228,000,000
Accrual for environmental loss contingencies				$ 18,000,000							18,000,000
Gain from Settlement, Net											$ 70,000,000
G E Operating Agreement [Member]
Loss Contingencies [Line Items]
Operating Agreement Excess Loss Percentage											10.00%	10.00%
Loss Sharing Agreement, Percentage				9.50%							9.50%
Off Balance Sheet Finance Receivables				$ 1,500,000,000							$ 1,500,000,000		1,400,000,000
Off Balance Sheet Finance Receivables Related Originations1				2,500,000,000							2,500,000,000		2,400,000,000
G E Operating Agreement [Member]
Loss Contingencies [Line Items]
Equipment leased to others				104,000,000							104,000,000		116,000,000
Manufacturing Operations [Member]
Loss Contingencies [Line Items]
Long-term Debt				3,426,000,000							3,426,000,000
Manufacturing Operations [Member] | Financed lease obligations [Member]
Loss Contingencies [Line Items]
Long-term Debt				122,000,000							122,000,000		130,000,000
Manufacturing Operations [Member] | G E Operating Agreement [Member] | Financed lease obligations [Member]
Loss Contingencies [Line Items]
Long-term Debt				$ 122,000,000							122,000,000		$ 129,000,000
Sao Paulo Groundwater Notice [Member] | Sanctions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value | R$			R$ 3									R$ 1
Navitrucks [Member] | Alleged Unfulfilled Promises and Injury to Reputation [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value											34,000,000
International Chamber of Commerce [Member] | Penalties and Interest [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value											17,000,000
Damages from Product Defects [Member] | EPA [Member]
Loss Contingencies [Line Items]
Loss Contingency, Civil Penalty Sought, Per Violation	50,000,000
Damages from Product Defects [Member] | EPA [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Civil Penalty Sought, Per Violation	2,000,000
Damages from Product Defects [Member] | EPA [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Civil Penalty Sought, Per Violation	$ 291,000,000
Retiree Health Care [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value										$ 26,000,000
MaxxForce Engine EGR Warranty Litigation [Member]
Loss Contingencies [Line Items]
Selling, general and administrative expenses					$ 0
Pending Litigation [Member] | Fatma Notice Trial [Member] | Penalties [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value									R$ 2		$ 1,000,000
Pending Litigation [Member] | Profit Sharing Litigation [Member] | Disputes [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value						$ 50,000,000
Pending Litigation [Member] | Other Cases Vs. International Indústria de Motores da América do Sul Ltda [Member] | International Indústria de Motores da América do Sul Ltda [Member]
Loss Contingencies [Line Items]
Loss Contingency, Number of Truck Fleet Owners | dealer											2	2
Brazil, Brazil Real
Loss Contingencies [Line Items]
Payments for Legal Settlements											$ 3,000,000
Brazil, Brazil Real | Navitrucks [Member] | Alleged Unfulfilled Promises and Injury to Reputation [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value								$ 128,000,000
Loss Contingency, Settlement Agreement, Terms				107
Brazil, Brazil Real | International Chamber of Commerce [Member] | Penalties and Interest [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value								$ 64,000,000
United States of America, Dollars
Loss Contingencies [Line Items]
Payments for Legal Settlements											$ 1,000,000
United States of America, Dollars | Navitrucks [Member] | Alleged Unfulfilled Promises and Injury to Reputation [Member]
Loss Contingencies [Line Items]
Loss Contingency, Settlement Agreement, Terms				28.79