Commitments and Contingencies - Narrative (Details) R$ in Millions			1 Months Ended		3 Months Ended										6 Months Ended	9 Months Ended
	Apr. 30, 2019 USD ($)	Jul. 16, 2015 USD ($)	Oct. 31, 2016 members	Mar. 31, 2014 BRL (R$)	Jul. 31, 2019 USD ($)	Jul. 31, 2019 BRL (R$)	Oct. 31, 2018 USD ($)	Oct. 31, 2018 BRL (R$)	Jul. 31, 2018 USD ($)	Oct. 31, 2017 USD ($)	Oct. 31, 2016 USD ($) lawsuits	Jul. 31, 2014 lawsuits	Jan. 31, 2014 BRL (R$)	Jul. 31, 2010 BRL (R$)	Apr. 30, 2019 BRL (R$)	Jul. 31, 2019 USD ($) dealer	Jul. 31, 2018 USD ($)	Jul. 31, 2015 engine
Loss Contingencies [Line Items]
Available stand-by letters of credit and surety bonds					$ 129,000,000											$ 129,000,000
Purchase commitments					125,000,000											125,000,000
Long Term Purchase Commitment Cancellation Fees																29,000,000
Accrual for environmental loss contingencies					20,000,000											20,000,000
Damages sought, value										$ 31,000,000
Loss Contingency, Number of Plaintiffs | members			2
Loss Contingency, New Claims Filed, Number | lawsuits											2	17
Notice of Violation, number | engine																		7,749
Civil penalties sought, per violation		$ 37,500
Loss Contingency, Overcharge Penalty										88,000,000
Loss Contingency, Damages Sought, Value, Punitive Damages										20,000,000
Legal Fees									$ 1,000,000							1,000,000
Selling, general and administrative expenses					167,000,000				222,000,000							726,000,000	$ 613,000,000
Loss Contingency, Damages Sought										$ 264,000,000
Sao Paulo Groundwater Notice [Member] | Sanctions [Member]
Loss Contingencies [Line Items]
Damages sought, value				R$ 3												1,000,000
International Chamber of Commerce [Member] | Penalties and Interest [Member]
Loss Contingencies [Line Items]
Damages sought, value																17,000,000
Navitrucks [Member] | Alleged Unfulfilled Promises and Injury to Reputation [Member]
Loss Contingencies [Line Items]
Damages sought, value					28,000,000		$ 28,000,000									34,000,000
G E Operating Agreement [Member]
Loss Contingencies [Line Items]
Off Balance Sheet Finance Receivables					1,600,000,000		1,500,000,000									1,600,000,000
Off Balance Sheet Finance Receivables Related Originations1					2,600,000,000		2,500,000,000									2,600,000,000
Minimum [Member] | Damages from Product Defects [Member] | EPA [Member]
Loss Contingencies [Line Items]
Civil penalties sought, per violation		2,000,000
Maximum [Member] | Damages from Product Defects [Member] | EPA [Member]
Loss Contingencies [Line Items]
Civil penalties sought, per violation		$ 291,000,000
G E Operating Agreement [Member]
Loss Contingencies [Line Items]
Equipment leased to others					46,000,000		104,000,000									46,000,000
Manufacturing Operations [Member] | Financed lease obligations [Member]
Loss Contingencies [Line Items]
Long-term Debt					54,000,000		122,000,000									54,000,000
Manufacturing Operations [Member] | G E Operating Agreement [Member] | Financed lease obligations [Member]
Loss Contingencies [Line Items]
Long-term Debt					54,000,000		122,000,000									54,000,000
Pending Litigation [Member] | FATMA Notice, Trial [Member] | Penalties [Member]
Loss Contingencies [Line Items]
Damages sought, value														R$ 2		1,000,000
Profit Sharing Litigation [Member] | Pending Litigation [Member] | Disputes [Member]
Loss Contingencies [Line Items]
Damages sought, value											$ 50,000,000
Retiree Health Care [Member]
Loss Contingencies [Line Items]
Damages sought, value																26,000,000
MaxxForce Engine EGR Warranty Litigation [Member]
Loss Contingencies [Line Items]
Common Fund, Balance					135,000,000											135,000,000
Selling, general and administrative expenses									$ 31,000,000							31,000,000
Litigation Settlement, Amount Awarded to Other Party	$ 159,000,000
MaxxForce Engine EGR Warranty Litigation [Member] | Cash [Member]
Loss Contingencies [Line Items]
Common Fund, Contribution					85,000,000											85,000,000
MaxxForce Engine EGR Warranty Litigation [Member] | Rebate [Member]
Loss Contingencies [Line Items]
Common Fund, Contribution					50,000,000											50,000,000
MaxxForce Engine EGR Warranty Litigation [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Common Fund, Allocation Between Contribution Types					35,000,000											35,000,000
CARB [Member]
Loss Contingencies [Line Items]
Damages sought, value																$ 2,000,000
Brazil, Brazil Real | International Chamber of Commerce [Member] | Penalties and Interest [Member]
Loss Contingencies [Line Items]
Damages sought, value | R$													R$ 64
Brazil, Brazil Real | Navitrucks [Member] | Alleged Unfulfilled Promises and Injury to Reputation [Member]
Loss Contingencies [Line Items]
Damages sought, value | R$						R$ 131		R$ 107					R$ 128		R$ 107
Brazil, Brazil Real | Navitrucks [Member] | Reimbursement of Legal Fees [Member]
Loss Contingencies [Line Items]
Damages sought, value | R$						R$ 3
Brazil, Brazil Real | Navitrucks [Member] | costs of arbitral proceedings [Member]
Loss Contingencies [Line Items]
Damages sought, value | R$								R$ 3
Brazil, Brazil Real | IIAA [Member] | costs of arbitral proceedings [Member]
Loss Contingencies [Line Items]
Damages sought, value | R$															R$ 6
United States of America, Dollars | Navitrucks [Member] | Alleged Unfulfilled Promises and Injury to Reputation [Member]
Loss Contingencies [Line Items]
Damages sought, value					35,000,000
United States of America, Dollars | Navitrucks [Member] | Reimbursement of Legal Fees [Member]
Loss Contingencies [Line Items]
Damages sought, value					$ 1,000,000
United States of America, Dollars | Navitrucks [Member] | costs of arbitral proceedings [Member]
Loss Contingencies [Line Items]
Damages sought, value							1,000,000
United States of America, Dollars | IIAA [Member] | costs of arbitral proceedings [Member]
Loss Contingencies [Line Items]
Damages sought, value							$ 2,000,000
International Indústria de Motores da América do Sul Ltda [Member] | Other Cases Vs. International Indústria de Motores da América do Sul Ltda [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Loss Contingency, Number of Truck Fleet Owners | dealer																2