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REGULATION - REGULATORY FILINGS (Details) - Natural Gas Distribution - USD ($) $ in Millions	Dec. 28, 2018	Dec. 18, 2018
Energy Efficiency EE
Schedule of Regulatory Filings [Line Items]
Approved rate increase (decrease), amount		$ (8.8)
BGSS/CIP Filing
Schedule of Regulatory Filings [Line Items]
Requested customer refunds, amount	$ 10.9

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Public Utilities, Requested Customer Refunds, Amount

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Amount of public utility's approved rate increase (decrease) by regulatory agency.

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