v3.26.1
Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2026
Disaggregation of Revenue [Line Items]    
Maximum collection period in which deferred net WRAM and MCBA revenues and associated costs will be recognized   24 months
Water Revenue Adjustment Mechanism    
Disaggregation of Revenue [Line Items]    
Maximum collection period in which deferred net WRAM and MCBA revenues and associated costs will be recognized 24 months 24 months
Regulated revenue $ 9.3  
IRMA Long-Term Regulatory Liability    
Disaggregation of Revenue [Line Items]    
Regulated revenue $ 15.3