| **Acquisitions (Details) $ / shares in Units, $ in Thousands**                                                     |           |             |             |           |             | 1 Months Ended | 3 Months Ended | 12 Months Ended |          |          |
|--------------------------------------------------------------------------------------------------------------------|-----------|-------------|-------------|-----------|-------------|----------------|----------------|-----------------|----------|----------|
||
| **Business Acquisition [Line Items]**                                                                              |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Goodwill                                                                                                           |      |        |        |      |        |           | $ 52,726       |            |     | $ 53,069 |   |   |   |   |
| Proceeds from issuing common stock                                                                                 |      |        |        |      |        |           |           |            |     | $ 4,035  | $ 361 |   |   |   |
| Interest Rate Swap [Member]                                                                                        |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| **Business Acquisition [Line Items]**                                                                              |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Interest rate swap                                                                                                 |      |        |        |      |        |           |           |            |     |     |   |   |   | $ 850,000 |
| Water And Wastewater Utility Systems [Member]                                                                      |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| **Business Acquisition [Line Items]**                                                                              |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Number of acquisitions | item                                                                                      |      |        |        |      |        |           |           |            | 4        | 7        |   |   |   |   |
| Number of customers | customer                                                                                     |      |        |        |      |        |           |           |            |     | 8,661    |   |   |   |   |
| Total purchase price                                                                                               |      |        |        |      |        |           |           |            | $ 38,950 | $ 42,519 |   |   |   |   |
| LDC Funding LLC [Member]                                                                                           |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| **Business Acquisition [Line Items]**                                                                              |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Stock purchase agreement                                                                                           |      |        |        | $ 750,000 |        |           |           |            |     |     |   |   |   |   |
| LDC Funding LLC [Member] | Senior Unsecured Notes [Member] | Letter of Credit [Member]                             |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| **Business Acquisition [Line Items]**                                                                              |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Debt instrument, issued                                                                                            |      |        |        |      | $ 5,100,000 |           |           |            |     |     |   |   |   |   |
| Scenario, Forecast [Member] | Water And Wastewater Utility Systems [Member]                                        |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| **Business Acquisition [Line Items]**                                                                              |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Number of customers | customer                                                                                     |      |        |        |      |        |           |           |            |     |     |   | 4,000 |   |   |
| Number of states company operates in | state                                                                       |      |        |        |      |        |           |           |            |     |     |   | 2 |   |   |
| Pennsylvania [Member] | Wastewater Utility System [Member]                                                         |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| **Business Acquisition [Line Items]**                                                                              |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Number of customers | customer                                                                                     |      |        |        |      |        |           |           | 4,950           |     |     |   |   |   |   |
| Total purchase price                                                                                               |      |        |        |      |        |           |           | $ 21,000        |     |     |   |   |   |   |
| Pennsylvania [Member] | Valley Creek Trunk Sewer System [Member]                                                   |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| **Business Acquisition [Line Items]**                                                                              |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Total purchase price                                                                                               |      |        |        |      |        |           | $ 28,300       |            |     |     |   |   |   |   |
| Systeme length | ft                                                                                                |      |        |        |      |        |           | 49,000         |            |     |     |   |   |   |   |
| Pennsylvania [Member] | LDC Funding LLC [Member]                                                                   |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| **Business Acquisition [Line Items]**                                                                              |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Number of acquisitions | item                                                                                      |      |        |        |      | 5           |           |           |            |     |     |   |   |   |   |
| Number of customers | customer                                                                                     |      |        |        |      | 740,000     |           |           |            |     |     |   |   |   |   |
| Total purchase price                                                                                               |      |        |        |      | $ 4,275,000 |           |           |            |     |     |   |   |   |   |
| Outstanding debt                                                                                                   |      |        |        |      | 1,370,000   |           |           |            |     |     |   |   |   |   |
| Change in contingent consideration                                                                                 |      |        |        |      | 1,370,000   |           |           |            |     |     |   |   |   |   |
| Contingent consideration                                                                                           |      |        |        |      | $ 120,000   |           |           |            |     |     |   |   |   |   |
| Limerick [Member] | Wastewater Utility System [Member]                                                             |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| **Business Acquisition [Line Items]**                                                                              |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Number of customers | customer                                                                                     |      |        |        |      |        |           |           |            | 5,497    |     |   |   |   |   |
| Total purchase price                                                                                               |      |        |        |      |        |           |           |            | $ 74,836 |     |   |   |   |   |
| Acquired property, plant and equipment                                                                             |      |        |        |      |        |           |           |            | 64,759   |     |   |   |   |   |
| Goodwill                                                                                                           |      |        |        |      |        |           |           |            | $ 10,790 |     |   |   |   |   |
| Cheltenham Township [Member] | Wastewater Utility System [Member]                                                  |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| **Business Acquisition [Line Items]**                                                                              |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Number of customers | customer                                                                                     |      |        |        |      |        |           |           |            | 10,500   |     |   |   |   |   |
| Total purchase price                                                                                               |      |        |        |      |        |           |           |            | $ 50,250 |     |   |   |   |   |
| Subsequent Event [Member] | LDC Funding LLC [Member]                                                               |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| **Business Acquisition [Line Items]**                                                                              |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Debt instrument, issued                                                                                            | $ 900,000 |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Proceeds from issuing common stock                                                                                 |      | $ 1,293,750 | $ 1,293,750 |      |        |           |           |            |     |     |   |   |   |   |
| Proceeds from tangible equity units                                                                                |      | $ 690,000   | $ 690,000   |      |        |           |           |            |     |     |   |   |   |   |
| Private placement, per share | $ / shares                                                                          |      | $ 50        | $ 50        |      |        |           |           |            |     |     |   |   |   |   |
| Subsequent Event [Member] | LDC Funding LLC [Member] | Senior Notes [Member]                                       |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| **Business Acquisition [Line Items]**                                                                              |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Debt instrument, issued                                                                                            |      |        |        |      |        |           |           |            |     |     |   |   | $ 900,000 |   |
| Proceeds from debt                                                                                                 | $ 83,520  |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Subsequent Event [Member] | LDC Funding LLC [Member] | Senior Unsecured Notes [Member] | Letter of Credit [Member] |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| **Business Acquisition [Line Items]**                                                                              |      |        |        |      |        |           |           |            |     |     |   |   |   |   |
| Repayments of Debt                                                                                                 |      |        |        |      |        | $ 2,717,000    |           |            |     |     |   |   |   |   |
| Debt available                                                                                                     |      |        |        |      |        | $ 750,000      |           |            |     |     |   |   |   |   |

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.
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Amount of liability recognized arising from contingent consideration in a business combination.
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Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.
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| X                                                                                                                                              |
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