COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Commitments and Contingencies [Line Items]
Number Of Former Manufactured Gas Sites Where We Own Or Retain Legal Responsibility For Environmental Conditions	12
Number of sites where regulatory closure has been achieved	5
Number of sites with ongoing groundwater monitoring	7
Accrual for Environmental Loss Contingencies	$ 20.3	$ 23.0
Deferred MGP Costs, Maximum	15.0
Regulatory Asset for Costs Associated with Manufactured Gas Sites	$ 30.0