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REGULATORY ENVIRONMENT - UMERC AND MGU (Details)	1 Months Ended
	Feb. 28, 2018 Filings
Michigan Public Service Commission (MPSC) | MGU and UMERC
Public Utilities, General Disclosures [Line Items]
Number of filings required related to the Tax Cuts and Jobs Act of 2017	3

X

- Definition

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.

+ References

No definition available.

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X

- Definition

Number of filings required related to the Tax Cuts and Jobs Act of 2018, which will be used to describe how benefits under this Act will be refunded to customers

+ References

No definition available.

+ Details

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- Details

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X

- Details

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