Commitments and Contingencies - Narrative (Details) R$ in Millions						1 Months Ended			3 Months Ended				9 Months Ended	12 Months Ended
	Dec. 03, 2019 USD ($)	Aug. 14, 2019 USD ($)	Apr. 30, 2019 USD ($)	Aug. 10, 2017 USD ($)	Jul. 16, 2015 USD ($)	Aug. 31, 2017 USD ($)	Oct. 31, 2016 members	Mar. 31, 2014 BRL (R$)	Jul. 31, 2018 USD ($)	Oct. 31, 2016 USD ($)	Jul. 31, 2014 lawsuits	Jul. 31, 2010 BRL (R$)	Jul. 31, 2018 USD ($)	Oct. 31, 2020 USD ($)	Oct. 31, 2020 BRL (R$)	Oct. 31, 2019 USD ($)	Oct. 31, 2018 USD ($)
Loss Contingencies [Line Items]
Selling, general and administrative expenses														$ 1,021,000,000		$ 934,000,000	$ 828,000,000
Loss Contingency, Civil Penalty Sought, Per Violation					$ 37,500
Loss Contingency, Damages Sought, Value				$ 31,000,000
Loss Contingency, Number of Plaintiffs | members							2
Loss Contingency, New Claims Filed, Number | lawsuits											17
Equipment leased to others														561,000,000		562,000,000
Long-term Debt														5,330,000,000
Available stand-by letters of credit and surety bonds														85,000,000
Purchase commitments														140,000,000
Long Term Purchase Commitment Cancellation Fees														20,000,000
Accrual for environmental loss contingencies														18,000,000
Loss Contingency, Damages Sought, Value, Punitive Damages				$ 20,000,000
Legal Fees		$ 1,000,000
Loss Contingency, Overcharge Penalty						$ 88,000,000
Treble Damages and Penalties						$ 264,000,000
G E Operating Agreement [Member]
Loss Contingencies [Line Items]
Off Balance Sheet Finance Receivables														1,500,000,000		1,600,000,000
Off Balance Sheet Finance Receivables Related Originations1														2,500,000,000		2,700,000,000
G E Operating Agreement [Member]
Loss Contingencies [Line Items]
Equipment leased to others														39,000,000		51,000,000
Manufacturing Operations [Member]
Loss Contingencies [Line Items]
Long-term Debt														3,496,000,000
Manufacturing Operations [Member] | G E Operating Agreement [Member] | Financed lease obligations [Member]
Loss Contingencies [Line Items]
Long-term Debt														49,000,000
Sao Paulo Groundwater Notice [Member] | Sanctions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value | R$								R$ 3							R$ 1
Damages from Product Defects [Member] | EPA [Member] | Minimum
Loss Contingencies [Line Items]
Loss Contingency, Civil Penalty Sought, Per Violation					6,000,000
Damages from Product Defects [Member] | EPA [Member] | Maximum
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]
Loss Contingency Accrual, Period Increase (Decrease)			$ 32,000,000
Selling, general and administrative expenses		$ 31,000,000							$ 7,749
Common Fund, Balance																135,000,000
Litigation Settlement, Amount Awarded to Other Party			$ 159,000,000
MaxxForce Engine EGR Warranty Litigation [Member] | Maximum
Loss Contingencies [Line Items]
Common Fund, Allocation Between Contribution Types																35,000,000
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
Subsequent Event [Member] | Single Damages [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	$ 1,300,000,000
Subsequent Event [Member] | Single Damages, Chassis [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	1,100,000,000
Subsequent Event [Member] | Single Damage, Engine [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	36,000,000
Subsequent Event [Member] | Relator’s ISS Claim, Single Damages [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	119,000,000
Subsequent Event [Member] | Treble Damages [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	$ 3,800,000,000
Cash [Member] | MaxxForce Engine EGR Warranty Litigation [Member]
Loss Contingencies [Line Items]
Common Fund, Contribution																85,000,000
Rebate [Member] | MaxxForce Engine EGR Warranty Litigation [Member]
Loss Contingencies [Line Items]
Common Fund, Contribution																$ 50,000,000