Commitments and Contingencies - Narrative (Details) BRL in Millions				1 Months Ended	3 Months Ended			12 Months Ended
	Jun. 01, 2016 USD ($) bus	Mar. 31, 2016 USD ($)	Jul. 16, 2015 USD ($)	Mar. 31, 2014 BRL	Oct. 31, 2016 USD ($) site	Oct. 31, 2016 BRL	Jan. 31, 2014 BRL	Oct. 31, 2016 USD ($) dealer site	Oct. 31, 2016 BRL site	Oct. 31, 2015 USD ($)	Jul. 31, 2015 engine
Loss Contingencies [Line Items]
Equipment leased to others					$ 525,000,000			$ 525,000,000		$ 613,000,000
Long-term Debt					4,904,000,000			4,904,000,000
Available stand-by letters of credit and surety bonds					88,000,000			88,000,000
Purchase commitments					$ 22,000,000			22,000,000
Long Term Purchase Commitment Cancellation Fees								$ 52,000,000
Number of Contaminated Sites | site					2			2	2
Number of Contaminated Sites in Sao Paulo, Brazil | site					2			2	2
Accrual for environmental loss contingencies					$ 20,000,000			$ 20,000,000
Sao Paulo Groundwater Notice [Member] | Sanctions [Member]
Loss Contingencies [Line Items]
Damages sought, value				BRL 3	1,000,000
International Chamber of Commerce [Member] | Penalties and Interest [Member]
Loss Contingencies [Line Items]
Damages sought, value					20,000,000
Navitrucks [Member] | Alleged Unfulfilled Promises and Injury to Reputation [Member]
Loss Contingencies [Line Items]
Damages sought, value					$ 40,000,000
Damages from Product Defects [Member]
Loss Contingencies [Line Items]
Notice of Violation, number | engine											7,749
Civil penalties sought, per violation			$ 37,500
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					$ 1,500,000,000			$ 1,500,000,000		1,400,000,000
Off Balance Sheet Finance Receivables Related Originations1					2,400,000,000			2,400,000,000		2,300,000,000
G E Operating Agreement [Member]
Loss Contingencies [Line Items]
Equipment leased to others					48,000,000			48,000,000		102,000,000
Manufacturing Operations [Member]
Loss Contingencies [Line Items]
Long-term Debt					3,096,000,000			3,096,000,000
Manufacturing Operations [Member] | Financed lease obligations [Member]
Loss Contingencies [Line Items]
Long-term Debt					52,000,000			52,000,000		111,000,000
Manufacturing Operations [Member] | G E Operating Agreement [Member] | Financed lease obligations [Member]
Loss Contingencies [Line Items]
Long-term Debt					51,000,000			51,000,000		$ 110,000,000
Pending Litigation [Member] | Disputes [Member]
Loss Contingencies [Line Items]
Damages sought, value					50,000,000
Pending Litigation [Member] | FATMA Notice, Trial [Member] | Penalties [Member]
Loss Contingencies [Line Items]
Damages sought, value					1,000,000	BRL 2
IIAA Vs. Navitrucks [Member]
Loss Contingencies [Line Items]
Gain Contingency, Unrecorded Amount					42,000,000			42,000,000
IIAA Vs. Navitrucks [Member] | International Chamber of Commerce [Member] | Penalties and Interest [Member]
Loss Contingencies [Line Items]
Damages sought, value					24,000,000
Navitrucks Vs. IIAA [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss					$ 45,000,000			$ 45,000,000
Polar Express School Bus and Lakeview Bus Lines v. Navistar, Inc and IC Bus LLC [Member] | Pending Litigation [Member] | Damages from Product Defects [Member]
Loss Contingencies [Line Items]
Loss Contingency, Number of Buses | bus	40
Loss Contingency, Damages Sought, Value, Compensatory Damages	$ 7,000,000
Loss Contingency, Damages Sought, Value, Punitive Damages	$ 50,000,000
SEC v. Navistar [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Paid, Value		$ 7,500,000
Brazil, Brazil Real | International Chamber of Commerce [Member] | Penalties and Interest [Member]
Loss Contingencies [Line Items]
Damages sought, value | BRL							BRL 64
Brazil, Brazil Real | Navitrucks [Member] | Alleged Unfulfilled Promises and Injury to Reputation [Member]
Loss Contingencies [Line Items]
Damages sought, value | BRL							BRL 128
Brazil, Brazil Real | IIAA Vs. Navitrucks [Member]
Loss Contingencies [Line Items]
Gain Contingency, Unrecorded Amount | BRL									BRL 135
Brazil, Brazil Real | IIAA Vs. Navitrucks [Member] | International Chamber of Commerce [Member] | Penalties and Interest [Member]
Loss Contingencies [Line Items]
Damages sought, value | BRL						BRL 75
Brazil, Brazil Real | Navitrucks Vs. IIAA [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss | BRL									BRL 144
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 Dealers | dealer								2
Loss Contingency, Number of Truck Fleet Owners | dealer								2