Number Of Counties In Which Entity Operates

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- Definition

Number Of Sale-Leasback Projects

+ References

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination.

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- Definition

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Millions			3 Months Ended
	Jul. 31, 2020 USD ($)	Feb. 18, 2020 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2021 project county	Aug. 07, 2020	Aug. 06, 2020
Public Utilities, General Disclosures [Line Items]
Number of sale-leaseback projects \| project				10
EnerConnex, LLC
Public Utilities, General Disclosures [Line Items]
Remaining equity interest acquired (as a percent)					75.00%
Equity interest in acquiree previously held (as a percent)						25.00%
Disposed of by sale
Public Utilities, General Disclosures [Line Items]
Consideration received on sales of projects			$ 7.2
Disposed of by sale \| MTF and ACB
Public Utilities, General Disclosures [Line Items]
Consideration received on sales of projects		$ 97.0
Disposed of by sale \| ELK Utility Operations
Public Utilities, General Disclosures [Line Items]
Consideration received on sales of projects	$ 15.6
SJG
Public Utilities, General Disclosures [Line Items]
Number of counties in which entity operates \| county				7
ETG Utility Operations
Public Utilities, General Disclosures [Line Items]
Number of counties in which entity operates \| county				7