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v3.21.1

Commitments and Contingent Liabilities (Narrative) (Details) gal in Millions, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 USD ($) gal | Mar. 31, 2020 USD ($)
Purchase Commitment, Excluding Long-term Commitment [Line Items] |  |
Budgeted construction cost for construction program, 2020 | $ | $ 121.0 |
Contractual construction agreements | $ | 17.0 |
Rental expenses under operating leases | $ | $ 0.2 | $ 0.2
Estimated incremental borrowing rate | 4.03% |
NJ Water Supply Authority [Member] |  |
Purchase Commitment, Excluding Long-term Commitment [Line Items] |  |
Purchase commitment expiration date of contract | Nov. 30, 2023 |
Water purchase per commitment | gal | 27.0 |
Regulated Water Authority [Member] |  |
Purchase Commitment, Excluding Long-term Commitment [Line Items] |  |
Purchase commitment expiration date of contract | Feb. 27, 2026 |
Water purchase per commitment | gal | 3.0 |
City of Dover [Member] |  |
Purchase Commitment, Excluding Long-term Commitment [Line Items] |  |
Water purchase per commitment | gal | 15.0 |

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- Definition Budgeted construction cost for construction program, next year. + References No definition available. + Details
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- Definition Estimated incremental borrowing rate. + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

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- Definition The expiration date of a long-term purchase commitment. + References No definition available. + Details
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- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment. + References No definition available. + Details
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- Definition Number of units of goods that must be purchased within the specified time period of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse consequences. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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