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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Revenue) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 2,131,250	$ 2,021,341	$ 2,065,133
Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,256,100	2,143,200	2,173,500
Operating Segments | Water Systems
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,256,400	1,184,000	1,203,700
Operating Segments | Water Systems | United States & Canada
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	607,900	586,600	636,000
Operating Segments | Water Systems | Latin America
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	204,700	170,900	174,200
Operating Segments | Water Systems | EMEA
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	218,100	211,400	198,300
Operating Segments | Water Systems | Asia Pacific
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	100,900	93,200	86,800
Operating Segments | Distribution
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	700,700	685,500	673,300
Operating Segments | Distribution | United States & Canada
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	700,700	685,500	673,300
Operating Segments | Energy Systems
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	299,000	273,700	296,500
Operating Segments | Energy Systems | United States & Canada
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	229,000	212,400	220,900
Operating Segments | Energy Systems | Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	70,000	61,300	75,600
Intersegment Sales
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	124,800	121,900	108,400
Intersegment Sales | Water Systems
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	124,800	121,900	108,400
Intersegment Sales | Water Systems | United States & Canada
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	124,800	121,900	108,400
Intersegment Sales | Distribution
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0
Intersegment Sales | Energy Systems
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0
Intersegment Eliminations/Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ (124,800)	$ (121,900)	$ (108,400)

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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