Earnings (Loss) Per Share Attributable to Navistar International Corporation - Basic & Diluted Loss per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Income (loss) from continuing operations, net of tax	$ 156	$ 170	$ 119	$ 152
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	161	177	135	172
Net loss attributable to Navistar International Corporation	$ 156	$ 170	$ 119	$ 152
Basic (in shares)	99.4	99.0	99.2	98.8
Weighted Average Number Diluted Shares Outstanding Adjustment	0.3	0.7	0.3	0.8
Diluted (in shares)	99.7	99.7	99.5	99.6
Earnings Per Share, Basic	$ 1.57	$ 1.72	$ 1.20	$ 1.54
Earnings Per Share, Diluted	$ 1.56	$ 1.71	$ 1.20	$ 1.53
Retained Earnings [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest			$ 119	$ 152