Goodwill and Other Identifiable Intangible Assets - Changes in Carrying Amount of Goodwill by Segment (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 3,252.6
Purchase Accounting Adjustments	(0.8)
Foreign currency translation/other	(9.3)
Ending Balance	3,242.5
Consumer Solutions
Goodwill [Roll Forward]
Beginning Balance	1,398.1
Purchase Accounting Adjustments	(0.8)
Foreign currency translation/other	(2.5)
Ending Balance	1,394.8
Industrial & Flow Technologies
Goodwill [Roll Forward]
Beginning Balance	747.6
Purchase Accounting Adjustments	0.0
Foreign currency translation/other	(6.8)
Ending Balance	740.8
Pool
Goodwill [Roll Forward]
Beginning Balance	1,106.9
Purchase Accounting Adjustments	0.0
Foreign currency translation/other	0.0
Ending Balance	$ 1,106.9