Interim Rates Collected to Date

No definition available.

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- Definition

Proposed Ongoing Customer Rate Increase

+ References

No definition available.

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- 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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- Definition

Amount of public utility's interim rate increase (decrease) allowed while waiting final decision of regulatory agency.

+ References

No definition available.

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- Definition

Percentage of public utility's interim rate increase (decrease) allowed while waiting final decision of regulatory agency.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

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- Definition

Amount of public utility's requested rate increase (decrease) with regulatory agency.

+ References

No definition available.

+ Details

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- Definition

Percentage of public utility's requested rate increase (decrease) with regulatory agency.

+ References

No definition available.

+ Details

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- Definition

Percentage of public utility's requested return on equity.

+ References

No definition available.

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- Definition

The amount of regulated other operating revenues recognized during the period.

+ References

No definition available.

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Regulatory Matters - Electric Rates (Details) - Electric Rates [Member] - MPUC [Member] - Minnesota Power [Member] - Retail Customers [Member] - USD ($) $ in Millions		3 Months Ended		4 Months Ended
	Nov. 01, 2019	Mar. 31, 2020	Mar. 31, 2019	Apr. 30, 2020
Minnesota Cost Recovery Riders [Member]
Regulatory Matters [Line Items]
Revenue from Cost Recovery Riders		$ 9.6	$ 7.4
2020 Minnesota General Rate Case [Member]
Regulatory Matters [Line Items]
Annual Additional Revenue Generated from Requested Final Rate Increase	$ 66.0
Requested Rate Increase Percent	10.60%
Interim Rate Increase	$ 36.1
Requested Return on Equity	10.05%
Requested Equity Capital Structure	53.81%
Interim Rates Collected to Date		$ 9.0
Subsequent Event [Member] \| 2020 Minnesota General Rate Case [Member]
Regulatory Matters [Line Items]
Interim Rates Collected to Date				$ 12.0
Proposed Ongoing Customer Rate Increase				4.10%
Public Utilities, Interim Rate Increase (Decrease), Percentage				5.80%