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
	Jan. 31, 2020	Jan. 31, 2019
Income (loss) from continuing operations, net of tax	$ (36)	$ 11
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(32)	17
Net loss attributable to Navistar International Corporation	$ (36)	$ 11
Basic (in shares)	99.5	99.1
Weighted Average Number Diluted Shares Outstanding Adjustment	0.0	0.3
Diluted (in shares)	99.5	99.4
Earnings Per Share, Basic	$ (0.36)	$ 0.11
Earnings Per Share, Diluted	$ (0.36)	$ 0.11
Retained Earnings [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (36)	$ 11