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v3.25.3

Long-term debt - Narrative (Details) |  |  | 9 Months Ended |
--- | --- | --- | --- | ---
Sep. 22, 2025 USD ($) | Jul. 02, 2025 USD ($) | Sep. 30, 2025 USD ($) Covenant | Dec. 31, 2024 USD ($)
Debt Instrument [Line Items] |  |  |  |
Unsecured notes |  |  | $ 2,540,000,000 | $ 3,090,000,000
Cash and cash equivalents |  |  | $ 232,775,000 | $ 693,214,000
Number of covenants | Covenant |  |  | 1 |
Amended and Restated Competitive Advance and Revolving Credit Agreement | Line of Credit | Revolving Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Unused borrowing capacity |  |  | $ 738,200,000 |
Maximum borrowing capacity under credit facility |  |  | $ 750,000,000 |
Line of credit facility, expiration date |  |  | Jan. 31, 2029 |
Amended and Restated Competitive Advance and Revolving Credit Agreement | Line of Credit | Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Letters of credit outstanding |  |  | $ 11,800,000 |
Unsecured notes bearing fixed rate interest at 4.75% due March 2026 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Repayments of unsecured notes | $ 300,000,000 | $ 250,000,000 |  |
Unsecured notes | 550,000,000 | 550,000,000 | $ 550,000,000 |
Payment of accrued interest | 300,000 | 3,500,000 |  |
Unamortized debt issuance costs | $ 400,000 | $ 500,000 |  |

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