Acquisitions and Divestitures (Details)	3 Months Ended
	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2024 USD ($)
Acquisitions - Additional Information [Line Items]
Revenues	$ 245,744,000	$ 218,129,000
Operating Income (Loss)	$ 79,585,000	$ 54,915,000
Number of Miles of Distribution Mains	150	160
Transaction-related expenses	$ 921,000	$ 0
Total operating income	79,585,000	54,915,000
Business Combination, Acquisition Related Costs	15,900,000
Transaction-related expenses			$ 4,100,000
Proceeds from Issuance of Senior Long-Term Debt	550,000,000
Equity Issued in Business Combination, Fair Value Disclosure			366,400,000
Unregulated Energy [Member]
Acquisitions - Additional Information [Line Items]
Operating Income (Loss)	21,429,000	17,245,000
Total operating income	21,429,000	17,245,000
Regulated Energy [Member]
Acquisitions - Additional Information [Line Items]
Operating Income (Loss)	58,109,000	37,625,000
Total operating income	58,109,000	$ 37,625,000
J.T. Lee and Son's
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	$ 2,700,000
Number of customers acquired through acquisition	3,000
Business Combination, Consideration Transferred	$ 3,900,000
Business Combination, Working Capital	200,000
Business Combination, Contingent Consideration, Liability	300,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	900,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets	$ 100,000
Gallons acquired through acquisition	800,000
Acquisitions - Additional Information [Line Items]
Number of customers acquired through acquisition	3,000
Business Combination, Consideration Transferred	$ 3,900,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	2,700,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	900,000
Business Combination, Contingent Consideration, Liability	$ 300,000
Gallons acquired through acquisition	800,000
Business Combination, Working Capital	$ 200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets	$ 100,000
Bulk Plant Storage Acquired Through Acquisition	60,000
Florida City Gas
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment			454,410,000
Number of customers acquired through acquisition	120,000
Business Combination, Consideration Transferred	$ 922,800,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables			14,456,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			35,663,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net			460,592,000
Acquisitions - Additional Information [Line Items]
Number of customers acquired through acquisition	120,000
Business Combination, Consideration Transferred	$ 922,800,000
Number of Miles of Distribution Mains	3,800
Number of Miles of Transmission Pipe	80
Transaction-related expenses	$ 900,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents			2,270,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables			14,456,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Regulatory assets - current			2,983,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other			2,082,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment			454,410,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net			460,592,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Regulatory assets - noncurrent			3,381,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets			18,309,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets			958,483,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities			(20,978,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Regulatory liabilities - noncurrent			(14,137,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other			(548,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			35,663,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			$ 922,820,000
Business Combination, Integration Related Costs	10,400,000
Florida City Gas | Regulated Energy [Member]
Acquisitions - Additional Information [Line Items]
Revenues	35,900,000
Operating Income (Loss)	4,200,000
Bridge Loan	965,000,000
Total operating income	$ 4,200,000