Revenue Recognition - Schedule of Sales to Members and Sales to Non-Members (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Revenue Recognition
Total operating revenues	$ 677,576	$ 536,314
Sales to members
Revenue Recognition
Total operating revenues	668,301	535,370
Sales to members \| Capacity revenues
Revenue Recognition
Total operating revenues	413,337	355,718
Sales to members \| Energy revenues
Revenue Recognition
Total operating revenues	254,964	179,652
Sales to non-members
Revenue Recognition
Total operating revenues	9,275	944
Sales to non-members \| Capacity revenues
Revenue Recognition
Total operating revenues	0	786
Sales to non-members \| Energy revenues
Revenue Recognition
Total operating revenues	$ 9,275	$ 158

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.

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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+ Details