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Risk Management and Derivatives: Utilities (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) MMBTU | Dec. 31, 2021 MMBTU
Derivative [Line Items] |  |
Credit Risk Derivative Liabilities, at Fair Value | $ | $ 2.9 |
Natural Gas, Distribution | Cash Flow Hedging |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | 1,646,200 |
Natural Gas, Distribution | Natural gas futures purchased |  |
Derivative [Line Items] |  |
Derivative, Remaining Maturity | 3 months | 3 months
Natural Gas, Distribution | Natural gas futures purchased | Long |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | 630,000 | 590,000
Natural Gas, Distribution | Natural gas options purchased, net |  |
Derivative [Line Items] |  |
Derivative, Remaining Maturity | 3 months | 3 months
Natural Gas, Distribution | Natural gas options purchased, net | Long |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | 1,790,000 | 3,100,000
Natural Gas, Distribution | Natural gas basis swaps purchased |  |
Derivative [Line Items] |  |
Derivative, Remaining Maturity | 3 months | 3 months
Natural Gas, Distribution | Natural gas basis swaps purchased | Long |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | 900,000 | 870,000
Natural Gas, Distribution | Natural gas over-the-counter swaps, net |  |
Derivative [Line Items] |  |
Derivative, Remaining Maturity | 24 months | 34 months
Natural Gas, Distribution | Natural gas over-the-counter swaps, net | Long |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | 4,460,000 | 4,570,000
Natural Gas, Distribution | Natural gas physical contracts, net |  |
Derivative [Line Items] |  |
Derivative, Remaining Maturity | 12 months | 24 months
Natural Gas, Distribution | Natural gas physical contracts, net | Long |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | 17,864,412 | 16,416,677

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