OPERATING REVENUES OTHER OPERATING REVENUES (Details) - Utility segment - Other operating revenues - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Operating Revenues
Other operating revenues	$ 1.3	$ 1.6
Late payment charges
Disaggregation of Operating Revenues
Other operating revenues	1.1	1.1
Alternative revenues
Disaggregation of Operating Revenues
Other operating revenues	$ 0.2	$ 0.5