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Contingencies (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($)
Contingencies |
Term estimate for the environmental cleanup | 2 years
Environmental Clean-Up and Remediation | GSWC |
Contingencies |
Amount spent in clean-up and remediation activities | $ 6.4
Amount paid by the State of California Underground Storage Tank Fund for clean-up and remediation of plant facilities | 1.5
Accrued liability for the estimated additional cost to complete the clean-up at the site | $ 1.3

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