Condensed Consolidating Guarantor and Non-Guarantor Financial Information - Balance Sheet (Details) - USD ($) $ in Millions	Jul. 31, 2017	Apr. 30, 2017	Oct. 31, 2016	Jul. 31, 2016	Oct. 31, 2015
Cash and cash equivalents	$ 911		$ 804	$ 547	$ 912
Marketable securities	62		46
Restricted cash	137		112
Finance and other receivables, net	2,117		1,969
Inventories, net	979		944
Investments in non-consolidated affiliates	55		53
Property and equipment, net	1,333		1,241
Goodwill	38		38
Deferred taxes, net	141		161
Other	307		285
Total assets	6,080		5,653
Debt	5,220		4,904
Postretirement benefits liabilities	2,824		3,098
Amounts due to (from) affiliates	0		0
Other liabilities	2,959		2,944
Total liabilities	11,003		10,946
Stockholders’ equity attributable to non-controlling interests	2		5
Stockholders’ equity (deficit) attributable to Navistar International Corporation	(4,925)		(5,298)
Total liabilities and stockholders’ deficit	6,080		5,653
Non-Guarantor Subsidiaries [Member]
Cash and cash equivalents	236		252
Marketable securities	18		19
Restricted cash	116		90
Finance and other receivables, net	1,997		1,883
Inventories, net	399		313
Investments in non-consolidated affiliates	52		57
Property and equipment, net	544		580
Goodwill	38		38
Deferred taxes, net	132		150
Other	178		175
Total assets	3,710		3,557
Debt	1,801		1,841
Postretirement benefits liabilities	134		233
Amounts due to (from) affiliates	(3,261)		(3,040)
Other liabilities	(677)		(665)
Total liabilities	(2,003)		(1,631)
Stockholders’ equity attributable to non-controlling interests	2		5
Stockholders’ equity (deficit) attributable to Navistar International Corporation	5,711		5,183
Total liabilities and stockholders’ deficit	3,710		3,557
Parent Company [Member]
Cash and cash equivalents	652		435
Marketable securities	44		27
Restricted cash	16		16
Finance and other receivables, net	8		(1)
Inventories, net	0		0
Investments in non-consolidated affiliates	(7,215)		(7,714)
Property and equipment, net	0		0
Goodwill	0		0
Deferred taxes, net	0		0
Other	3		2
Total assets	(6,492)		(7,235)
Debt	2,227		1,965
Postretirement benefits liabilities	0		0
Amounts due to (from) affiliates	(7,738)		(7,724)
Other liabilities	3,944		3,822
Total liabilities	(1,567)		(1,937)
Stockholders’ equity attributable to non-controlling interests	0		0
Stockholders’ equity (deficit) attributable to Navistar International Corporation	(4,925)		(5,298)
Total liabilities and stockholders’ deficit	(6,492)		(7,235)
Guarantor Subsidiaries [Member]
Cash and cash equivalents	23		117
Marketable securities	0		0
Restricted cash	5		6
Finance and other receivables, net	202		171
Inventories, net	585		639
Investments in non-consolidated affiliates	6,372		6,253
Property and equipment, net	796		669
Goodwill	0		0
Deferred taxes, net	10		10
Other	127		110
Total assets	8,120		7,975
Debt	1,192		1,100
Postretirement benefits liabilities	2,690		2,865
Amounts due to (from) affiliates	10,947		10,709
Other liabilities	(244)		(152)
Total liabilities	14,585		14,522
Stockholders’ equity attributable to non-controlling interests	0		0
Stockholders’ equity (deficit) attributable to Navistar International Corporation	(6,465)		(6,547)
Total liabilities and stockholders’ deficit	8,120		7,975
Consolidation, Eliminations [Member]
Cash and cash equivalents	0		0
Marketable securities	0		0
Restricted cash	0		0
Finance and other receivables, net	(90)		(84)
Inventories, net	(5)		(8)
Investments in non-consolidated affiliates	846		1,457
Property and equipment, net	(7)		(8)
Goodwill	0		0
Deferred taxes, net	(1)		1
Other	(1)		(2)
Total assets	742		1,356
Debt	0		(2)
Postretirement benefits liabilities	0		0
Amounts due to (from) affiliates	52		55
Other liabilities	(64)		(61)
Total liabilities	(12)		(8)
Stockholders’ equity attributable to non-controlling interests	0		0
Stockholders’ equity (deficit) attributable to Navistar International Corporation	754		1,364
Total liabilities and stockholders’ deficit	$ 742		$ 1,356
Manufacturing Operations [Member] | Notes Payable to Banks [Member] | Eight Point Two Five Percent Senior Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage		8.25%