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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
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-Subparagraph (b)
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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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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 45
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Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Feb. 01, 2017
Impairment of finite-lived intangible assets	$ 0	$ 0
Net carrying amounts of intangible assets, other than goodwill	174,000,000	109,000,000
Light Vehicle Segment [Member]
Net carrying amounts of intangible assets, other than goodwill	52,000,000
Commercial Vehicle Segment [Member]
Net carrying amounts of intangible assets, other than goodwill	34,000,000
Off-Highway Segment [Member]
Net carrying amounts of intangible assets, other than goodwill	78,000,000
Power Technologies Segment [Member]
Net carrying amounts of intangible assets, other than goodwill	10,000,000
Trademarks and Trade Names [Member]
Impairment of indefinite-lived intangible assets	0	0	$ 0
Used In Research And Development [Member]
Impairment of indefinite-lived intangible assets	$ 0	$ 0	$ 0
BFP and BPT [Member]
Percentage of ownership interests acquired				80.00%