Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 168	$ (33)	$ 91	$ (65)
Other comprehensive income (loss):
Foreign currency translation adjustment	11	(103)	36	(111)
Defined benefit plans, net of tax	17	24	71	49
Total other comprehensive income (loss)	28	(79)	107	(62)
Comprehensive income (loss)	196	(112)	198	(127)
Less: Net income attributable to non-controlling interests	5	5	9	9
Total comprehensive income (loss) attributable to Navistar International Corporation	$ 191	$ (117)	$ 189	$ (136)