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Goodwill Rollforward (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020 USD ($)
Goodwill [Roll Forward]
Goodwill	$ 699.1
Goodwill impairment charge	(510.0)
Foreign currency translation	(5.5)
Goodwill	183.6
Driveline [Member]
Goodwill [Roll Forward]
Goodwill	398.3
Goodwill impairment charge	(210.8)
Foreign currency translation	(3.9)
Goodwill	183.6
Metal Forming [Member]
Goodwill [Roll Forward]
Goodwill	300.8
Goodwill impairment charge	(299.2)
Foreign currency translation	(1.6)
Goodwill	$ 0.0

X

- 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.

+ References

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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.

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Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments 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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