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Derivative Instruments (Details) MWh in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) MWh	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount of outstanding swap agreements | MWh	54
Derivative liability	$ 0.2		$ 4.2
Swap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Loss on derivatives, net	$ 2.7	$ 16.0

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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- Definition

Nominal energy measure used to calculate payments on a derivative instrument.

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