Segment Information - Reconciliation of Income from Continuing Operations from Segments to Consolidated (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 4,082.8	$ 4,104.5	$ 4,121.8
Cost of goods sold	(2,484.0)	(2,585.3)	(2,757.2)
Segment Income (Loss)	803.8	739.2	595.3
Restructuring and other costs	(43.5)	(6.0)	(56.3)
Transformation costs	(59.8)	(44.7)	(27.2)
Asset impairment and write-offs	(17.6)	(7.9)	(25.6)
Intangible amortization	(54.3)	(55.3)	(52.5)
Income from continuing operations before income taxes	$ 718.9	$ 618.9	$ 550.6
One customer | Net sales | Customer concentration risk
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Concentration risk percentage	15.00%	15.00%	20.00%
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 4,081.1	$ 4,102.9	$ 4,120.3
Segment Income (Loss)	1,049.7	946.9	853.4
Operating Segments | Flow
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	1,514.0	1,582.1	1,500.8
Cost of goods sold	(965.1)	(1,054.7)	(1,041.5)
Operating expenses	(230.8)	(245.1)	(217.0)
Segment Income (Loss)	318.1	282.3	242.3
Operating Segments | Water Solutions
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	1,131.0	1,177.2	986.8
Cost of goods sold	(706.8)	(752.5)	(672.5)
Operating expenses	(169.1)	(177.1)	(165.3)
Segment Income (Loss)	255.1	247.6	149.0
Operating Segments | Pool
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	1,436.1	1,343.6	1,632.7
Cost of goods sold	(799.3)	(775.2)	(1,009.8)
Operating expenses	(160.3)	(151.4)	(160.8)
Segment Income (Loss)	476.5	417.0	462.1
Corporate and other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	1.7	1.6	1.5
Segment Income (Loss)	(90.5)	(91.8)	(85.7)
Reconciling items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Restructuring and other costs	(37.0)	(3.4)	(32.4)
Transformation costs	(52.1)	(44.3)	(27.2)
Inventory step-up			(5.8)
Pension and other post-retirement mark-to-market gain	5.3	(6.1)	17.5
Asset impairment and write-offs	(17.6)	(7.9)	(25.6)
Russia business exit impact			(4.7)
Deal-related costs and expenses			(22.2)
Legal accrual adjustments and settlements	7.5	(2.2)	(0.2)
Intangible amortization	(54.3)	(55.3)	(52.5)
Interest expense, net	(88.6)	(118.3)	(61.8)
Other expense	(3.5)	1.3	(2.2)
Income from continuing operations before income taxes	$ 718.9	$ 618.9	$ 550.6