Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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-Publisher FASB

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- Definition

The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

+ References

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Restructuring and Impairments - Schedule of Impairment Charges (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		3 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014	Jan. 31, 2014
Restructuring Cost and Reserve [Line Items]
Other Asset Impairment Charges	$ 1us-gaap_OtherAssetImpairmentCharges	$ 2us-gaap_OtherAssetImpairmentCharges	$ 8us-gaap_OtherAssetImpairmentCharges	$ 20us-gaap_OtherAssetImpairmentCharges
Asset impairment charges	1us-gaap_AssetImpairmentCharges	151us-gaap_AssetImpairmentCharges	8us-gaap_AssetImpairmentCharges	169us-gaap_AssetImpairmentCharges
Brazilian Reporting Unit [Member]
Restructuring Cost and Reserve [Line Items]
Goodwill, Impairment Loss	0	142	0	142
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	0	7	0	7
Asset impairment charges		149
Impairment charges [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment charges				169
North America Truck [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment charges					$ 18