Commitments and Contingencies - Narrative (Details) R$ in Millions			1 Months Ended		3 Months Ended								6 Months Ended
	Apr. 30, 2019 USD ($)	Jul. 16, 2015 USD ($)	Oct. 31, 2016 members	Mar. 31, 2014 BRL (R$)	Apr. 30, 2019 USD ($)	Oct. 31, 2018 USD ($)	Apr. 30, 2018 USD ($)	Oct. 31, 2017 USD ($)	Oct. 31, 2016 USD ($) lawsuits plaintiff	Jul. 31, 2014 lawsuits	Jan. 31, 2014 BRL (R$)	Jul. 31, 2010 BRL (R$)	Apr. 30, 2019 USD ($) dealer	Apr. 30, 2018 USD ($)	Jul. 31, 2015 engine
Loss Contingencies [Line Items]
Available stand-by letters of credit and surety bonds	$ 98,000,000				$ 98,000,000								$ 98,000,000
Purchase commitments	135,000,000				135,000,000								135,000,000
Long Term Purchase Commitment Cancellation Fees													20,000,000
Accrual for environmental loss contingencies	$ 20,000,000				20,000,000								20,000,000
Damages sought, value								$ 31,000,000
Loss Contingency, Number of Plaintiffs			2						25
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							$ 1,400,000
Selling, general and administrative expenses					$ 373,000,000		200,000,000						559,000,000	$ 391,000,000
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													16,000,000
Navitrucks [Member]
Loss Contingencies [Line Items]
Loss Contingency, Settlement Agreement, Terms					1
Navitrucks [Member] | Alleged Unfulfilled Promises and Injury to Reputation [Member]
Loss Contingencies [Line Items]
Damages sought, value													$ 32,000,000
Loss Contingency, Settlement Agreement, Terms					27	27
G E Operating Agreement [Member]
Loss Contingencies [Line Items]
Operating Agreement Excess Loss Percentage													10.00%
Loss Sharing Agreement, Percentage	9.50%				9.50%								9.50%
Off Balance Sheet Finance Receivables	$ 1,600,000,000				$ 1,600,000,000	$ 1,500,000,000							$ 1,600,000,000
Off Balance Sheet Finance Receivables Related Originations1	2,600,000,000				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	45,000,000				45,000,000	104,000,000							45,000,000
Manufacturing Operations [Member] | Financed lease obligations [Member]
Loss Contingencies [Line Items]
Long-term Debt	53,000,000				53,000,000	122,000,000							53,000,000
Manufacturing Operations [Member] | G E Operating Agreement [Member] | Financed lease obligations [Member]
Loss Contingencies [Line Items]
Long-term Debt	53,000,000				$ 53,000,000	$ 122,000,000							53,000,000
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]
Selling, general and administrative expenses							$ 31,000,000
Litigation Settlement, Amount Awarded to Other Party	$ 159,000,000
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]
Loss Contingencies [Line Items]
Loss Contingency, Settlement Agreement, Terms					3
Brazil, Brazil Real | Navitrucks [Member] | Alleged Unfulfilled Promises and Injury to Reputation [Member]
Loss Contingencies [Line Items]
Damages sought, value | R$											R$ 128
Loss Contingency, Settlement Agreement, Terms					107	107
Brazil, Brazil Real | Navitrucks [Member] | costs of arbitral proceedings [Member]
Loss Contingencies [Line Items]
Loss Contingency, Settlement Agreement, Terms						6
United States of America, Dollars | Navitrucks [Member] | costs of arbitral proceedings [Member]
Loss Contingencies [Line Items]
Loss Contingency, Settlement Agreement, Terms						2
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