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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

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