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REGULATORY ENVIRONMENT - 2023 MGU RATE ORDER (Details) - MichiganPublicServiceCommissionMPSC - MGU $ in Millions	Aug. 30, 2023 USD ($)
Public Utilities, General Disclosures [Line Items]
Approved rate increase	$ 9.9
Approved rate increase (as a percent)	4.70%
Approved return on equity (as a percent)	9.80%
Approved common equity component average (as a percent)	51.00%

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- Definition

Percentage of public utility's approved equity to capital, including debt and equity.

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- Definition

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

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

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Percentage of public utility's approved return on equity.

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