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v3.23.2

Long-term debt - Schedule of Long-term Debt (Detail) | Jun. 30, 2023 USD ($) | Jun. 30, 2023 CAD ($) | Jun. 30, 2023 CLP ($) | Dec. 31, 2022 USD ($)
--- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 8,083,147,000 |  |  | $ 7,512,017,000
Less: current portion | (513,803,000) |  |  | (423,274,000)
Long-term debt, excluding current portion | 7,569,344,000 |  |  | 7,088,743,000
Senior Unsecured Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 1,663,373,000 |  |  | 1,656,451,000
Senior Unsecured Notes | U.S. Dollar Senior Unsecured Notes (Green Equity Units) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Weighted average coupon | 1.18% | 1.18% | 1.18% |
Par value | $ 1,150,000,000 |  |  |
Long-term debt | $ 1,143,856,000 |  |  | 1,142,814,000
Senior Unsecured Notes | Senior unsecured notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Weighted average coupon | 3.38% | 3.38% | 3.38% |
Par value | $ 1,490,000,000 |  |  |
Long-term debt | $ 1,481,682,000 |  |  | 1,496,101,000
Senior Unsecured Notes | Senior unsecured utility notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Weighted average coupon | 6.34% | 6.34% | 6.34% |
Par value | $ 142,000,000 |  |  |
Long-term debt | $ 153,435,000 |  |  | 154,271,000
Senior Unsecured Notes | Senior secured utility bonds |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Weighted average coupon | 4.71% | 4.71% | 4.71% |
Par value | $ 556,203,000 |  |  |
Long-term debt | $ 552,479,000 |  |  | 554,822,000
Senior Unsecured Notes | Canadian dollar Senior unsecured notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Weighted average coupon | 3.68% | 3.68% | 3.68% |
Par value |  | $ 1,200,000,000 |  |
Long-term debt | $ 903,360,000 |  |  | 882,899,000
Senior Unsecured Notes | Senior secured project notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Weighted average coupon | 10.21% | 10.21% | 10.21% |
Par value |  | $ 18,512,000 |  |
Long-term debt | $ 13,982,000 |  |  | 15,024,000
Senior Unsecured Notes | Senior unsecured utility bonds |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Weighted average coupon | 3.98% | 3.98% | 3.98% |
Par value |  |  | $ 1,579,000 |
Long-term debt | $ 81,532,000 |  |  | 77,206,000
Senior Unsecured Notes | Senior Unsecured Debt |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 6,419,774,000 |  |  | 5,855,566,000
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 | $ 298,033,000 |  |  | 291,238,000
Senior Unsecured Notes | 5.56%, U.S. Dollar Subordinated Unsecured Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Weighted average coupon | 5.56% | 5.56% | 5.56% |
Par value | $ 1,387,500,000 |  |  |
Long-term debt | 1,365,340,000 |  |  | 1,365,213,000
Revolving Credit Facility | Senior Unsecured Notes | Senior unsecured revolving credit facilities |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | 801,929,000 |  |  | 351,786,000
Revolving Credit Facility | Senior Unsecured Notes | Senior unsecured bank credit facilities and delayed draw term facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | 788,906,000 |  |  | 773,643,000
Revolving Credit Facility | Senior Unsecured Notes | Commercial paper |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 498,613,000 |  |  | $ 407,000,000

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