v3.26.1
Water And Wastewater Utility Acquisitions (Narrative) (Details)
$ in Thousands
 1 Months Ended 12 Months Ended
May 31, 2026
USD ($)
item
Mar. 31, 2026
USD ($)
customer
Jul. 31, 2025
USD ($)
item
customer
Apr. 30, 2025
USD ($)
customer
Jan. 31, 2025
USD ($)
customer
Jun. 30, 2024
USD ($)
customer
Dec. 31, 2019
USD ($)
item
customer
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Business Acquisition [Line Items]                  
Goodwill               $ 2,349,025 $ 2,348,559
Integra Water Texas, LLC [Member]                  
Business Acquisition [Line Items]                  
Number of dwelling units | item 1,100                
Cash paid for business acquisition $ 4,877                
Delaware [Member] | Wastewater Utility System [Member]                  
Business Acquisition [Line Items]                  
Number of customers | customer             16,000    
Cash paid for business acquisition             $ 276,500    
Retail customers | customer             198,000    
Number of municipalities | item             42    
Ohio [Member] | Village of Midvale, Ohio’s water system [Member]                  
Business Acquisition [Line Items]                  
Number of customers | customer       1,000          
Cash paid for business acquisition       $ 2,950          
Greenville, Pennsylvania [Member] | Greenville Sanitary Authority’s Wastewater Utility Assets [Member]                  
Business Acquisition [Line Items]                  
Number of customers | customer         2,300        
Cash paid for business acquisition         $ 18,000        
Greenville, Pennsylvania [Member] | Water And Wastewater Utility Systems [Member]                  
Business Acquisition [Line Items]                  
Number of customers | customer   3,000              
Cash paid for business acquisition   $ 18,000              
Property, plant and equipment, net   17,500              
Goodwill   $ 500              
Beaver Falls Pennsylvania [Member] | Wastewater Utility System [Member]                  
Business Acquisition [Line Items]                  
Number of customers | customer     3,200            
Number of dwelling units | item     3,800            
Cash paid for business acquisition     $ 37,750            
Number of municipalities | item     7            
Property, plant and equipment, net     $ 29,900            
Goodwill     $ 7,850            
Harris County, Texas [Member] | Private Water And Wastewater Utility Assets [Member]                  
Business Acquisition [Line Items]                  
Number of customers | customer           400      
Cash paid for business acquisition           $ 1,125      
Wake County, North Carolina [Member] | Water And Wastewater Utility Systems [Member]                  
Business Acquisition [Line Items]                  
Number of customers | customer   1,026              
Cash paid for business acquisition   $ 4,360