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v3.21.2

Long-term debt - Schedule of Long-term Debt (Detail) | Jun. 30, 2021 USD ($) | Jun. 30, 2021 CAD ($) | Jun. 30, 2021 CLP ($) | Dec. 31, 2020 USD ($) | May 23, 2019 USD ($)
--- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | $ 6,622,363,000 |  |  | $ 4,538,470,000 |
Less: current portion | (517,038,000) |  |  | (139,874,000) |
Long-term debt, excluding current portion | $ 6,105,325,000 |  |  | 4,398,596,000 |
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 | $ 1,139,687,000 |  |  | 0 |
Senior Unsecured Notes | U.S. Dollar Senior Unsecured Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average coupon | 3.46% | 3.46% | 3.46% |  |
Par value | $ 1,700,000,000 |  |  |  |
Long-term debt | $ 1,689,074,000 |  |  | 1,688,390,000 |
Senior Unsecured Notes | U.S. Dollar 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 | $ 156,392,000 |  |  | 157,212,000 |
Senior Unsecured Notes | Canadian Dollar Senior Unsecured Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average coupon | 3.81% | 3.81% | 3.81% |  |
Par value | $ 400,000,000 | $ 1,400,669,000 |  |  |
Long-term debt | $ 1,124,179,000 |  |  | 899,710,000 |
Senior Unsecured Notes | Chilean Unidad de Fomento borrowings |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average coupon | 4.24% | 4.24% | 4.24% |  |
Par value |  |  | $ 1,811,000 |  |
Long-term debt | $ 91,049,000 |  |  | 92,183,000 |
Senior Unsecured Notes | U.S. Dollar Subordinated Unsecured Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average coupon | 6.50% | 6.50% | 6.50% |  |
Par value | $ 637,500,000 |  |  |  | $ 350,000,000
Long-term debt | $ 621,667,000 |  |  | 621,321,000 |
Senior Secured Debt | U.S Dollar Senior Secured Utility Bonds |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average coupon | 4.71% | 4.71% | 4.71% |  |
Par value | $ 556,224,000 |  |  |  |
Long-term debt | $ 555,957,000 |  |  | 561,494,000 |
Senior Secured Debt | Canadian Dollar Senior Secured Project Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average coupon | 10.21% | 10.21% | 10.21% |  |
Par value |  | $ 24,602,000 |  |  |
Long-term debt | $ 19,850,000 |  |  | 20,315,000 |
Senior Debt | Senior Unsecured Debt |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | 6,000,696,000 |  |  | 3,917,149,000 |
Revolving Credit Facility | Senior Unsecured Notes | Senior Unsecured Revolving Credit Facilities |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | 567,814,000 |  |  | 223,507,000 |
Revolving Credit Facility | Senior Unsecured Notes | Senior Unsecured Bank Credit Facilities |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | 157,694,000 |  |  | 152,338,000 |
Revolving Credit Facility | Senior Unsecured Notes | Commercial Paper |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | $ 499,000,000 |  |  | $ 122,000,000 |

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