Restructuring and Transformation Program - Restructuring Costs by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Total restructuring and transformation costs	$ 93.7	$ 103.3	$ 50.7
Corporate and other
Restructuring Cost and Reserve [Line Items]
Total restructuring and transformation costs	43.9	52.7	38.3
Flow | Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring and transformation costs	19.7	15.5	3.4
Water Solutions | Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring and transformation costs	16.7	19.4	(0.1)
Pool | Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring and transformation costs	$ 13.4	$ 15.7	$ 9.1