Goodwill and Intangible Assets - Changes in Goodwill (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Goodwill		$ 1,794.9
Accumulated impairment loss		(230.9)
Goodwill, Beginning balance	$ 1,564.0
Impact of changes in foreign currency	(7.8)
Goodwill	1,556.2
Power Transmission Technologies [Member]
Goodwill [Roll Forward]
Goodwill		442.8
Accumulated impairment loss		(31.8)
Goodwill, Beginning balance	411.0
Impact of changes in foreign currency	(2.2)
Goodwill	408.8
Automation & Specialty [Member]
Goodwill [Roll Forward]
Goodwill		1,352.1
Accumulated impairment loss		$ (199.1)
Goodwill, Beginning balance	1,153.0
Impact of changes in foreign currency	(5.6)
Goodwill	$ 1,147.4

Goodwill foreign currency divestiture and other adjustments.

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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.

+ References

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Amount before 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 accumulated impairment loss for 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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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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