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Debt - Rural Utilities Service Empowering Rural America (New ERA) Loan (Details) - USD ($) $ in Thousands			6 Months Ended
	Jul. 08, 2026	Jun. 29, 2026	Jun. 30, 2026	Jun. 30, 2025	Mar. 31, 2026	Dec. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Repayments of long-term debt			$ 503,215	$ 209,568
Short-term borrowings			732,809			$ 459,513
Reclassification, Other \| Commercial Paper
Debt Instrument [Line Items]
Short-term borrowings					$ (73,751)
Commercial Paper \| Reclassification, Other
Debt Instrument [Line Items]
Aggregate borrowings including capitalized interest					$ 73,751
Rural Utilities Service Empowering Rural America (New ERA) Loan
Debt Instrument [Line Items]
Debt instrument, face amount							$ 331,500
Rural Utilities Service Empowering Rural America (New ERA) Loan \| Commercial Paper
Debt Instrument [Line Items]
Prepayment premium		$ 4,381
Rural Utilities Service Empowering Rural America (New ERA) Loan \| Reclassification, Other \| Commercial Paper
Debt Instrument [Line Items]
Short-term borrowings			(302,181)
Rural Utilities Service Empowering Rural America (New ERA) Loan \| Subsequent Event
Debt Instrument [Line Items]
Proceeds from issuance of debt	$ 302,181
Rural Utilities Service Empowering Rural America (New ERA) Loan \| Taxable Municipal Bonds
Debt Instrument [Line Items]
Repayments of long-term debt		$ 297,800
Rural Utilities Service Empowering Rural America (New ERA) Loan \| Commercial Paper \| Reclassification, Other
Debt Instrument [Line Items]
Aggregate borrowings including capitalized interest			$ 302,181