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v3.22.1

Rate Matters and Regulation Rate Matters and Regulation (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2022 USD ($)
Estimated Refund to SPP | $ 13.0
Plan Investments for Customers | 28.0
Requested Recovery of Capital Investment | 1,200.0
Securitization Authorization Requested | 760.0
Maximum [Member] |
Lost Revenue on Plant Investments for Customers | 42.7
Minimum [Member] |
Lost Revenue on Plant Investments for Customers | 31.4
In Favor Cooperatives |
Plan Investments for Customers | 11.7
In Favor Cooperatives | Maximum [Member] |
Lost Revenues on Plant Investments for Customers | 5.1
In Favor Cooperatives | Minimum [Member] |
Lost Revenues on Plant Investments for Customers | 3.2
OKLAHOMA |
Public Utilities, Requested Rate Increase (Decrease), Amount | $ 163.5
Public Utilities, Requested Return on Equity, Percentage | 10.20%
Common Equity Percentage which ROE is based | 53.37%
ARKANSAS |
Public Utilities, Requested Rate Increase (Decrease), Amount | $ 4.2
Impact to Company [Member] |
Estimated Refund to SPP | 5.0
Customer Impact [Member] |
Estimated Refund to SPP | $ 8.0

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