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SEGMENT AND GEOGRAPHIC INFORMATION (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ (2,131,250) | $ (2,021,341) | $ (2,065,133)
Cost of sales | 1,375,325 | 1,304,061 | 1,368,125
Selling, general, and administrative expenses | 486,231 | 470,136 | 433,476
Restructuring expense | 716 | 3,499 | 1,091
Segment operating income | 268,978 | 243,645 | 262,441
Interest Expense, Operating and Nonoperating | (10,641) | (6,319) | (11,790)
Other income, net | 585 | 1,339 | 3,696
Foreign exchange expense, net | (9,340) | (6,818) | (12,124)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | 194,650 | 231,847 | 242,223
Depreciation and amortization | 62,875 | 56,073 | 52,260
Assets | 1,944,385 | 1,820,606 | 1,728,100
Capital Expenditures Incurred In Year, Paid And Not Paid | 45,000 | 41,200 | 43,200
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component | (54,932) | 0 | 0
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Long-lived assets | 979,200 | 848,200 | 865,600
United States |  |  |
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | (1,446,500) | (1,400,400) | (1,441,600)
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Long-lived assets | 610,300 | 626,600 | 625,300
Foreign |  |  |
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | (684,800) | (620,900) | (623,500)
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Long-lived assets | 368,900 | 221,600 | 240,300
Operating Segments |  |  |
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | (2,256,100) | (2,143,200) | (2,173,500)
Segment operating income |  | 315,800 | 323,600
Operating Segments | Water Systems |  |  |
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | (1,256,400) | (1,184,000) | (1,203,700)
Cost of sales | 830,100 | 782,000 | 819,300
Selling, general, and administrative expenses | 218,700 | 201,700 | 187,300
Restructuring expense | 400 | 2,400 | 500
Segment operating income | 207,200 | 197,900 | 196,600
Depreciation and amortization | 45,800 | 39,000 | 36,900
Assets | 1,235,000 | 998,800 | 1,044,400
Capital Expenditures Incurred In Year, Paid And Not Paid | 32,700 | 27,800 | 28,600
Operating Segments | Distribution |  |  |
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | (700,700) | (685,500) | (673,300)
Cost of sales | 511,200 | 505,900 | 497,400
Selling, general, and administrative expenses | 149,400 | 154,600 | 141,600
Restructuring expense | 300 | 700 | 0
Segment operating income | 39,800 | 24,300 | 34,300
Depreciation and amortization | 9,300 | 9,600 | 7,600
Assets | 367,200 | 358,900 | 365,600
Capital Expenditures Incurred In Year, Paid And Not Paid | 6,200 | 9,300 | 9,300
Operating Segments | Energy Systems |  |  |
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | (299,000) | (273,700) | (296,500)
Cost of sales | 156,600 | 137,600 | 162,000
Selling, general, and administrative expenses | 43,300 | 42,100 | 41,200
Restructuring expense | 0 | 400 | 600
Segment operating income | 99,100 | 93,600 | 92,700
Depreciation and amortization | 4,300 | 4,300 | 4,200
Assets | 259,500 | 250,400 | 256,400
Capital Expenditures Incurred In Year, Paid And Not Paid | 2,600 | 2,300 | 3,000
Intersegment Sales |  |  |
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | (124,800) | (121,900) | (108,400)
Segment operating income | (2,400) | (500) | 2,200
Intersegment Sales | Water Systems |  |  |
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | (124,800) | (121,900) | (108,400)
Intersegment Sales | Distribution |  |  |
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 | 0 | 0
Intersegment Sales | Energy Systems |  |  |
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 | 0 | 0
Operating Segments Excluding Intercompany |  |  |
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | (2,131,300) | (2,021,300) | (2,065,100)
Operating Segments Excluding Intercompany | Water Systems |  |  |
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | (1,131,600) | (1,062,100) | (1,095,300)
Operating Segments Excluding Intercompany | Distribution |  |  |
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | (700,700) | (685,500) | (673,300)
Operating Segments Excluding Intercompany | Energy Systems |  |  |
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | (299,000) | (273,700) | (296,500)
Segment Reporting, Reconciling Item, Corporate Nonsegment |  |  |
Segment Reporting Information |  |  |
Selling, general, and administrative expenses | (74,800) | (71,700) | (63,400)
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment |  |  |
Segment Reporting Information |  |  |
Segment operating income | 346,100 |  |
Depreciation and amortization | 59,400 | 52,900 | 48,700
Assets | 1,861,700 | 1,608,100 | 1,666,400
Capital Expenditures Incurred In Year, Paid And Not Paid | 41,500 | 39,400 | 40,900
Intersegment Eliminations/Other |  |  |
Segment Reporting Information |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 124,800 | 121,900 | 108,400
Intersegment Eliminations/Other | Intersegment Eliminations/Other |  |  |
Segment Reporting Information |  |  |
Depreciation and amortization | 3,500 | 3,200 | 3,600
Assets | 82,700 | 212,500 | 61,700
Capital Expenditures Incurred In Year, Paid And Not Paid | $ 3,500 | $ 1,800 | $ 2,300

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