REGULATORY ENVIRONMENT - 2024 MGU RATE ORDER (Details) - MPSC - MGU $ in Millions	Sep. 26, 2024 USD ($)
Public Utilities, General Disclosures [Line Items]
Approved rate increase	$ 7.0
Approved rate increase (as a percent)	3.88%
Approved return on equity (as a percent)	9.86%
Approved common equity component average (as a percent)	50.00%