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Derivatives and Risk Management Activities - Interest Rate Risk Hedging (Details) - Cash Flow Hedge $ in Millions | 9 Months Ended
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Sep. 30, 2023 USD ($) contract
8 forward starting swaps (30-year), 3.09% |
Interest Rate Risk Hedging |
Number of interest rate derivatives | contract | 8
Term of derivative contract | 30 years
Notional amount of derivatives | $ | $ 200
Average rate locked (as a percent) | 3.09%
4 forward starting swaps (30-year), 0.74% |
Interest Rate Risk Hedging |
Number of interest rate derivatives | contract | 4
Term of derivative contract | 30 years
Notional amount of derivatives | $ | $ 100
Average rate locked (as a percent) | 0.74%

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