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v3.25.2

Capitalization (Narrative) (Details) - USD ($) $ in Thousands |  |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jun. 03, 2025 | Mar. 19, 2025 | Aug. 13, 2024 | Jun. 30, 2025 | Jun. 30, 2025 | May 29, 2025
At Market Sales Agreements 2024 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Common stock shares future issuance and sale at aggregate offering price |  |  | $ 1,000,000 |  |  |
Sale of stock, shares |  |  |  | 3,664,762 | 5,291,771 |
Common stock issued |  |  |  | $ 145,500 | $ 208,600 |
Stock remaining available for sale, amount |  |  |  | 753,000 | 753,000 |
First Mortgage Bonds [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face Amount |  |  |  |  |  | $ 100,000
Commercial Paper Program [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Net of unamortized discount on issuance |  |  |  | $ 857 | $ 857 |
Weighted average interest rate |  |  |  | 4.69% | 4.69% |
Weighted average remaining term |  |  |  |  | 13 days |
Face Amount |  |  |  | $ 566,543 | $ 566,543 |
First Mortgage Bonds Due In 2035 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face Amount |  |  |  |  |  | $ 75,000
Debt instrument, interest rate |  |  |  |  |  | 5.38%
First Mortgage Bonds Due In 2040 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face Amount |  |  |  |  |  | $ 25,000
Debt instrument, interest rate |  |  |  |  |  | 5.63%
Maximum [Member] | Commercial Paper [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Borrowing capacity through private placement |  | $ 1,000,000 |  |  |  |
Maturities of commercial paper term |  | 364 days |  |  |  |
Maximum [Member] | Aqua Pennsylvania, Inc [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Borrowing capacity through private placement | $ 100,000 |  |  |  |  |
Maturities of commercial paper term | 364 days |  |  |  |  |
Maximum [Member] | Peoples Natural Gas Companies [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Borrowing capacity through private placement | $ 300,000 |  |  |  |  |
Maturities of commercial paper term | 364 days |  |  |  |  |

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