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v3.19.3.a.u2

Derivative Accounting - Outstanding Gross Notional Amounts Outstanding (Details) - Commodity Contracts MWh in Thousands | 12 Months Ended
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Dec. 31, 2019 MWh Bcf | Dec. 31, 2018 MWh Bcf
Outstanding gross notional amount of derivatives |  |
Power (in MWh) | MWh | 193 | 250
Gas (in bcf) | Bcf | 257 | 218

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- Definition Nominal energy measure used to calculate payments on a derivative instrument. + References No definition available. + Details
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- Definition Nominal volume used to calculate payments on a derivative instrument. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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- References No definition available. + Details
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Balance Type: | na
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- Details
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