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Long-term debt - Schedule of Long-term Debt (Details) | Dec. 31, 2024 USD ($) | Dec. 31, 2024 CAD ($) | Dec. 31, 2024 CLP ($) | Dec. 31, 2023 USD ($) | Jun. 30, 2021
--- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | $ 6,698,773,000 |  |  | $ 7,500,155,000 |
Less: current portion | (491,733,000) |  |  | (621,856,000) |
Long-term debt, excluding current portion | $ 6,207,040,000 |  |  | 6,878,299,000 |
Senior Unsecured Notes | Senior unsecured notes (Green Equity Units) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average coupon | 5.37% | 5.37% | 5.37% |  | 1.18%
Par value | $ 1,140,787,000 |  |  |  |
Long-term debt | $ 1,140,167,000 |  |  | 1,144,897,000 |
Senior Unsecured Notes | Senior unsecured notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average coupon | 4.25% | 4.25% | 4.25% |  |
Par value | $ 2,195,000,000 |  |  |  |
Long-term debt | $ 2,181,759,000 |  |  | 1,406,278,000 |
Senior Unsecured Notes | Senior unsecured utility notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average coupon | 6.30% | 6.30% | 6.30% |  |
Par value | $ 137,000,000 |  |  |  |
Long-term debt | $ 145,558,000 |  |  | 147,589,000 |
Senior Unsecured Notes | Senior unsecured utility bonds |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average coupon | 4.82% | 4.82% | 4.82% |  |
Par value | $ 861,678,000 |  |  |  |
Long-term debt | $ 849,203,000 |  |  | 551,166,000 |
Senior Unsecured Notes | Canadian dollar Senior unsecured notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average coupon | 3.32% | 3.32% | 3.32% |  |
Par value |  | $ 200,000,000 |  |  |
Long-term debt | $ 137,868,000 |  |  | 151,395,000 |
Senior Unsecured Notes | Senior secured project notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average coupon | 10.21% | 10.21% | 10.21% |  |
Par value |  | $ 13,255,000 |  |  |
Long-term debt | $ 9,212,000 |  |  | 12,738,000 |
Senior Unsecured Notes | Senior unsecured utility bonds |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average coupon | 3.73% | 3.73% | 3.73% |  |
Par value |  |  | $ 1,405,000 |  |
Long-term debt | $ 59,440,000 |  |  | 70,967,000 |
Senior Unsecured Notes | Senior Unsecured Debt |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | $ 5,337,237,000 |  |  | 6,115,232,000 |
Senior Unsecured Notes | 5.25%, U.S. Dollar Subordinated Unsecured Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average coupon | 5.25% | 5.25% | 5.25% |  |
Par value |  | $ 400,000,000 |  |  |
Long-term debt | $ 274,281,000 |  |  | 298,382,000 |
Senior Unsecured Notes | 5.56%, U.S. Dollar Subordinated Unsecured Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average coupon | 5.97% | 5.97% | 5.97% |  |
Par value | $ 1,100,000,000 |  |  |  |
Long-term debt | 1,087,255,000 |  |  | 1,086,541,000 |
Revolving Credit Facility | Senior Unsecured Notes | Senior unsecured revolving credit facilities |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | 250,692,000 |  |  | 1,361,520,000 |
Revolving Credit Facility | Senior Unsecured Notes | Senior unsecured bank credit facilities and delayed draw term facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | 180,346,000 |  |  | 786,962,000 |
Revolving Credit Facility | Senior Unsecured Notes | Commercial paper |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | $ 382,992,000 |  |  | $ 481,720,000 |

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