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COMMITMENTS AND CONTINGENCIES - Narrative (Details) |  | 12 Months Ended |
--- | --- | --- | ---
Dec. 20, 2017 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2017 well | Dec. 31, 2020 USD ($)
Long-term purchase commitments - other disclosures |  |  |  |
Operating lease renewal term |  | 25 years |  |
Finance lease renewal term |  | 25 years |  |
Contingency loss recognized liability |  |  |  | $ 3,500,000
Minimum |  |  |  |
Long-term purchase commitments - other disclosures |  |  |  |
Operating lease term |  | 1 year |  |
Finance lease term |  | 1 year |  |
Maximum |  |  |  |
Long-term purchase commitments - other disclosures |  |  |  |
Operating lease term |  | 50 years |  |
Finance lease term |  | 50 years |  |
Kern County Water Agency (Agency) |  |  |  |
Long-term purchase commitments - other disclosures |  |  |  |
Total capital facilities charge and treated water charge obligation per acre foot |  | $ 517.91 |  |
Portion of estimated operating cost per acre foot for treated water delivered |  | $ 85.65 |  |
California Water Service Company and City of Bakersfield v. The Dow Chemical Company, et al., Civil Case No. CIV-470999 (TCP Action) |  |  |  |
Long-term purchase commitments - other disclosures |  |  |  |
Amount awarded | $ 85,000,000 |  |  |
Proceeds from legal settlements | $ 56,000,000 |  |  |
Loss Contingency, Claims Settled, Number | well |  |  | 47 |
Loss Contingency, Pending Claims, Number | well |  |  | 57 |
Loss Contingency, Claims Dismissed, Number | well |  |  | 36 |

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