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REGULATORY ENVIRONMENT - COVID-19 (Details)	1 Months Ended
	Mar. 31, 2020 order
Public Service Commission of Wisconsin (PSCW)
Public Utilities, General Disclosures [Line Items]
Number of orders issued in response to COVID-19	2
Illinois Commerce Commission (ICC)
Public Utilities, General Disclosures [Line Items]
Minimum period of time required for flexible credit and collection procedures	6 months

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Minimum period of time a utility is required to provide flexible credit and collection procedures after the COVID-19 moratorium on disconnections is lifted.

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Number of orders issued in response to COVID-19.

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