Restructuring and Transformation Program - Restructuring Costs by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring and transformation costs	$ 12.6	$ 43.7	$ 74.9	$ 82.8
Corporate and other
Restructuring Cost and Reserve [Line Items]
Restructuring and transformation costs	10.3	16.8	35.3	44.0
Flow | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and transformation costs	(1.4)	6.0	17.1	11.0
Water Solutions | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and transformation costs	0.9	16.2	10.7	17.7
Pool | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and transformation costs	$ 2.8	$ 4.7	$ 11.8	$ 10.1