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Earnings (Loss) Per Share Attributable to Navistar International Corporation - Narrative (Details)
$ / shares in Units, shares in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2016
USD ($)
$ / shares
shares
Apr. 30, 2015
shares
Apr. 30, 2016
$ / shares
shares
Apr. 30, 2015
shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 14.9 16.0 14.8 16.0
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 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   $ 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 7.6 7.6 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