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Derivatives and Risk Management Activities - Interest Rate Risk Hedging (Details) - Cash Flow Hedging $ in Millions | 12 Months Ended
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Dec. 31, 2023 USD ($) contract
8 forward starting swaps (30-year), 3.09% |
Interest Rate Derivatives [Abstract] |
Number of interest rate derivatives | contract | 8
Term of derivative contract | 30 years
Notional amount of derivatives | $ | $ 200
Average rate locked (percent) | 3.09%
4 forward starting swaps (30-year), 0.74% |
Interest Rate Derivatives [Abstract] |
Number of interest rate derivatives | contract | 4
Term of derivative contract | 30 years
Notional amount of derivatives | $ | $ 100
Average rate locked (percent) | 0.74%

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