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Long-term debt (Tables)
6 Months Ended
Jun. 30, 2021
Debt Disclosure [Abstract]  
Long Term Debt
Long-term debt consists of the following:
Borrowing typeWeighted average couponMaturityPar valueJune 30, 2021December 31, 2020
Senior unsecured revolving credit facilities— 2021-2024N/A$567,814 $223,507 
Senior unsecured bank credit facilities— 2021-2031N/A157,694 152,338 
Commercial paper— 2021N/A499,000 122,000 
U.S. dollar borrowings
Senior unsecured notes (Green Equity Units) (a)1.18 %2026$1,150,000 1,139,687 — 
Senior unsecured notes3.46 %2022-2047$1,700,000 1,689,074 1,688,390 
Senior unsecured utility notes6.34 %2023-2035$142,000 156,392 157,212 
Senior secured utility bonds4.71 %2026-2044$556,224 555,957 561,494 
Canadian dollar borrowings
Senior unsecured notes (b)3.81 %2022-2050C$1,400,669 1,124,179 899,710 
Senior secured project notes10.21 %2027C$24,602 19,850 20,315 
Chilean Unidad de Fomento borrowings
Senior unsecured utility bonds4.24 %2028-2040CLF 1,81191,049 92,183 
$6,000,696 $3,917,149 
Subordinated U.S. dollar borrowings
Subordinated unsecured notes6.50 %2078-2079$637,500 621,667 621,321 
$6,622,363 $4,538,470 
Less: current portion(517,038)(139,874)
$6,105,325 $4,398,596