Restructuring and Transformation Program - Restructuring Costs by Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Restructuring Cost and Reserve [Line Items]
Restructuring and transformation costs	$ 25.2	$ 24.0
Corporate and other
Restructuring Cost and Reserve [Line Items]
Restructuring and transformation costs	17.1	7.9
Flow | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and transformation costs	1.5	7.0
Water Solutions | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and transformation costs	5.5	5.9
Pool | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and transformation costs	$ 1.1	$ 3.2