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Debt Covenants (Details)	Dec. 31, 2020
Debt Instrument [Line Items]
Ratio of Indebtedness to Net Capital	0.599
Maximum
Debt Instrument [Line Items]
Debt Instrument, Debt to Capitalization Ratio Requirement	0.65
Maximum | Wyoming Electric
Debt Instrument [Line Items]
Debt Instrument, Debt to Capitalization Ratio Requirement	0.60

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- Definition

Debt Instrument, Debt to Capitalization Ratio Requirement

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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.

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- Definition

Indebtedness divided by net capital.

+ References

No definition available.

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