Goodwill, Expected Deductible Tax Period

No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

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.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of increase (decrease) from adjustments after acquisition date under purchase accounting 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.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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- Definition

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

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- Definition

Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

+ References

No definition available.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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GOODWILL (Details) $ in Millions						12 Months Ended
GOODWILL (Details) $ in Millions	Jul. 26, 2019 USD ($)	Sep. 30, 2018 USD ($)	Apr. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Aug. 31, 2017 USD ($)	Sep. 30, 2019 USD ($) unit	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Jul. 26, 2019 USD ($)
Goodwill [Line Items]
Goodwill		$ 421		$ 414		$ 478	$ 414	$ 429
Goodwill [Roll Forward]
Goodwill, beginning balance						421	414	429
Accumulated impairment losses								(15)
Adjustment due to sale of a business							(1)
Measurement period adjustments						3	1
Goodwill acquired from acquisition						61	9
Foreign currency translation						(7)	(2)
Goodwill, ending balance		421		414		$ 478	421	414
Commercial Truck
Goodwill [Line Items]
Number of reporting units \| unit						1
Goodwill		266		269		$ 266	269	269
Goodwill [Roll Forward]
Goodwill, beginning balance						266	269	269
Accumulated impairment losses								0
Adjustment due to sale of a business							(1)
Measurement period adjustments						0	0
Goodwill acquired from acquisition						0	0
Foreign currency translation						(5)	(2)
Goodwill, ending balance		266		269		$ 261	266	269
Aftermarket, Industrial and Trailer
Goodwill [Line Items]
Number of reporting units \| unit						5
Goodwill		155		145		$ 155	145	160
Goodwill [Roll Forward]
Goodwill, beginning balance						155	145	160
Accumulated impairment losses								(15)
Adjustment due to sale of a business							0
Measurement period adjustments						3	1
Goodwill acquired from acquisition						61	9
Foreign currency translation						(2)	0
Goodwill, ending balance		155		145		$ 217	155	145
AxleTech
Goodwill [Line Items]
Percentage of voting equity interest acquired									100.00%
Purchase price	$ 179
Goodwill	61								$ 61
Goodwill [Roll Forward]
Goodwill, ending balance	$ 61
AA Gear & Manufacturing, Inc.
Goodwill [Line Items]
Purchase price			$ 35
Goodwill			12
Goodwill [Roll Forward]
Goodwill, ending balance			$ 12
AA Gear & Manufacturing, Inc. \| Aftermarket, Industrial and Trailer
Goodwill [Line Items]
Expected deductible tax period						15 years
Fabco Holdings, Inc.
Goodwill [Line Items]
Purchase price		34		34	$ 34
Goodwill		20		19		$ 20	19	19
Goodwill [Roll Forward]
Goodwill, beginning balance						$ 20	19
Goodwill, ending balance		$ 20		$ 19			$ 20	$ 19