Segment Information - Schedule of Capital Expenditures and Identifiable Assets (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Segment Reporting [Line Items]
Capital Expenditures	$ 324,755	$ 124,239
Identifiable Assets	4,293,605		$ 3,964,279
Operating Segments \| Electric
Segment Reporting [Line Items]
Capital Expenditures	310,660	114,038
Identifiable Assets	3,298,885		3,006,695
Operating Segments \| Manufacturing
Segment Reporting [Line Items]
Capital Expenditures	7,913	4,674
Identifiable Assets	259,342		243,737
Operating Segments \| Plastics
Segment Reporting [Line Items]
Capital Expenditures	6,136	4,915
Identifiable Assets	306,994		185,936
Corporate
Segment Reporting [Line Items]
Capital Expenditures	46	$ 612
Identifiable Assets	$ 428,384		$ 527,911

Amount of asset recognized for present right to economic benefit.

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+ Details

- 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.

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+ Details