| **Segment Reporting (Tables)**                         | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                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| **Segment Reporting [Abstract]**                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          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| Schedule of selected financial information, by segment | (in millions)Truck Parts Global Operations FinancialServices(A) CorporateandEliminations TotalSix Months Ended April 30, 2016           External sales and revenues, net$2,540 $1,202 $148 $68 $4 $3,962Intersegment sales and revenues72 15 21 49 (157) —Total sales and revenues, net$2,612 $1,217 $169 $117 $(153) $3,962Income (loss) from continuing operations attributable to NIC, net of tax$(74) $326 $(14) $51 $(318) $(29)Income tax expense— — — — (11) (11)Segment profit (loss)$(74) $326 $(14) $51 $(307) $(18)Depreciation and amortization$63 $7 $9 $24 $8 $111Interest expense— — — 38 124 162Equity in income (loss) of non-consolidated affiliates2 2 (3) — — 1Capital expenditures(C)44 2 2 — 5 53(in millions)Truck Parts Global Operations FinancialServices(A) CorporateandEliminations TotalSix Months Ended April 30, 2015           External sales and revenues, net$3,564 $1,221 $253 $71 $5 $5,114Intersegment sales and revenues(B)72 18 29 49 (168) —Total sales and revenues, net$3,636 $1,239 $282 $120 $(163) $5,114Income (loss) from continuing operations attributable to NIC, net of tax$(69) $278 $(14) $46 $(347) $(106)Income tax expense— — — — (25) (25)Segment profit (loss)$(69) $278 $(14) $46 $(322) $(81)Depreciation and amortization$99 $7 $12 $24 $11 $153Interest expense— — — 38 114 152Equity in income (loss) of non-consolidated affiliates3 2 (2) — — 3       Capital expenditures(C)38 — 3 2 2 45(in millions)Truck Parts Global Operations FinancialServices CorporateandEliminations TotalSegment assets, as of:           April 30, 2016$1,887 $645 $370 $2,284 $1,002 $6,188October 31, 20151,876 641 409 2,455 1,311 6,692_________________________(A)Total sales and revenues in the Financial Services segment include interest revenues of $42 million and $84 million for the three and six months ended April 30, 2016, respectively, and $44 million and $89 million for the three and six months ended April 30, 2015, respectively.(B)During the second quarter of 2015, we identified a $35 million adjustment related to the first quarter of 2015 Intersegment sales and revenues.  As a result, the Truck segment and Corporate and Eliminations should have reported Intersegment sales and revenues of $39 million and $(89) million, respectively, and reported Total sales and revenues, net, of $1,670 million and $(87) million, respectively, for the three months ended January 31, 2015.  The adjustment did not impact the consolidated results for the first or second quarter of 2015. (C)Exclusive of purchases of equipment leased to others.(in millions)Truck Parts Global Operations FinancialServices(A) CorporateandEliminations TotalThree Months Ended April 30, 2015           External sales and revenues, net$1,933 $607 $115 $35 $3 $2,693Intersegment sales and revenues(B)33 6 15 25 (79) —Total sales and revenues, net$1,966 $613 $130 $60 $(76) $2,693Income (loss) from continuing operations attributable to NIC, net of tax$(51) $133 $1 $22 $(169) $(64)Income tax expense— — — — (18) (18)Segment profit (loss)$(51) $133 $1 $22 $(151) $(46)Depreciation and amortization$47 $4 $5 $12 $6 $74Interest expense— — — 18 57 75Equity in income (loss) of non-consolidated affiliates1 1 (1) — — 1       Capital expenditures(C)24 — 1 2 1 28(in millions)TruckPartsGlobal OperationsFinancialServices(A)CorporateandEliminationsTotalThree Months Ended April 30, 2016External sales and revenues, net$1,459 $640 $64 $33 $1 $2,197Intersegment sales and revenues21 7 13 25 (66) —Total sales and revenues, net$1,480 $647 $77 $58 $(65) $2,197Income (loss) from continuing operations attributable to NIC, net of tax$(23) $176 $(1) $25 $(173) $4Income tax expense— — — — (16) (16)Segment profit (loss)$(23) $176 $(1) $25 $(157) $20Depreciation and amortization$29 $4 $4 $12 $4 $53Interest expense— — — 19 62 81Equity in income of non-consolidated affiliates1 1 — — — 2Capital expenditures(C)19 1 1 — 3 24 |

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| - Definition
Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599
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| - References
No definition available.
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