Goodwill and Other Identifiable Intangible Assets - Changes in Carrying Amount of Goodwill by Segment (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Beginning Balance	$ 2,258.3	$ 2,072.7
Acquisitions/ divestitures	51.9	201.8
Foreign currency translation	67.6	(16.2)
Ending Balance	2,392.2	2,258.3
Goodwill, Purchase Accounting Adjustments	14.4
Consumer Solutions
Goodwill [Roll Forward]
Beginning Balance	1,501.4	1,302.8
Acquisitions/ divestitures	51.9	201.8
Foreign currency translation	12.8	(3.2)
Ending Balance	1,580.5	1,501.4
Goodwill, Purchase Accounting Adjustments	14.4
Industrial & Flow Technologies
Goodwill [Roll Forward]
Beginning Balance	756.9	769.9
Acquisitions/ divestitures	0.0	0.0
Foreign currency translation	54.8	(13.0)
Ending Balance	811.7	$ 756.9
Goodwill, Purchase Accounting Adjustments	$ 0.0

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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Amount of increase (decrease), classified as other, of an asset representing the future economic benefits 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 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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