Earnings (Loss) Per Share Attributable to Navistar International Corporation - Narrative (Details) $ / shares in Units, shares in Millions	3 Months Ended
Jan. 31, 2019 USD ($) $ / shares shares	Jan. 31, 2018 shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	9.9	14.0
Four Point Five Zero Senior Subordinated Convertible Notes [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares related to convertible notes	3.4	3.4
Four Point Five Zero Senior Subordinated Convertible Notes [Member] \| Convertible Debt Securities [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Debt Instrument, Convertible, Conversion Ratio	17.1233
Debt Instrument Convertible Conversion Ratio Basis \| $	$ 1,000
Debt Instrument, Convertible, Conversion Price \| $ / shares	$ 58.40
Four Point Seven Five Senior Subordinated Convertible Notes [Member] [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Debt Instrument, Convertible, Conversion Ratio	18.4946
Option Indexed to Issuer's Equity, Strike Price \| $ / shares	$ 54.07
Shares related to convertible notes	7.6
Four Point Seven Five Senior Subordinated Convertible Notes [Member] [Member] \| Convertible Debt Securities [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Debt Instrument Convertible Conversion Ratio Basis \| $	$ 1,000
Manufacturing Operations [Member] \| Convertible Subordinated Debt [Member] \| Four Point Five Zero Senior Subordinated Convertible Notes [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.50%
Manufacturing Operations [Member] \| Convertible Subordinated Debt [Member] \| Four Point Seven Five Senior Subordinated Convertible Notes [Member] [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.75%

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