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BORROWINGS - Borrowings by Currency (Details) - Interest on non-recourse borrowings € in Millions, ₨ in Millions, £ in Millions, S/ in Millions, R$ in Millions, $ in Millions, $ in Millions, $ in Millions, $ in Millions, $ in Millions | Dec. 31, 2023 USD ($) | Dec. 31, 2023 CAD ($) | Dec. 31, 2023 INR (₨) | Dec. 31, 2023 GBP (£) | Dec. 31, 2023 BRL (R$) | Dec. 31, 2023 AUD ($) | Dec. 31, 2023 COP ($) | Dec. 31, 2023 PEN (S/) | Dec. 31, 2023 NZD ($) | Dec. 31, 2023 EUR (€) | Dec. 31, 2022 USD ($) | Dec. 31, 2022 CAD ($) | Dec. 31, 2022 INR (₨) | Dec. 31, 2022 GBP (£) | Dec. 31, 2022 BRL (R$) | Dec. 31, 2022 AUD ($) | Dec. 31, 2022 COP ($) | Dec. 31, 2022 PEN (S/) | Dec. 31, 2022 NZD ($) | Dec. 31, 2022 EUR (€)
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Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-recourse borrowings | $ 40,904 |  |  |  |  |  |  |  |  |  | $ 26,567 |  |  |  |  |  |  |  |  |
CAD |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-recourse borrowings | 10,713 |  |  |  |  |  |  |  |  |  | 9,115 |  |  |  |  |  |  |  |  |
Borrowings, local currency |  | $ 14,195 |  |  |  |  |  |  |  |  |  | $ 12,348 |  |  |  |  |  |  |  |
USD |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-recourse borrowings | 16,365 |  |  |  |  |  |  |  |  |  | 8,198 |  |  |  |  |  |  |  |  |
Borrowings, local currency | 16,365 |  |  |  |  |  |  |  |  |  | 8,198 |  |  |  |  |  |  |  |  |
INR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-recourse borrowings | 4,051 |  |  |  |  |  |  |  |  |  | 3,249 |  |  |  |  |  |  |  |  |
Borrowings, local currency | ₨ |  |  | ₨ 337,583 |  |  |  |  |  |  |  |  |  | ₨ 268,512 |  |  |  |  |  |  |
GBP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-recourse borrowings | 4,561 |  |  |  |  |  |  |  |  |  | 3,151 |  |  |  |  |  |  |  |  |
Borrowings, local currency | £ |  |  |  | £ 3,583 |  |  |  |  |  |  |  |  |  | £ 2,608 |  |  |  |  |  |
BRL |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-recourse borrowings | 2,501 |  |  |  |  |  |  |  |  |  | 1,543 |  |  |  |  |  |  |  |  |
Borrowings, local currency | R$ |  |  |  |  | R$ 12,106 |  |  |  |  |  |  |  |  |  | R$ 8,049 |  |  |  |  |
AUD |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-recourse borrowings | 611 |  |  |  |  |  |  |  |  |  | 525 |  |  |  |  |  |  |  |  |
Borrowings, local currency |  |  |  |  |  | $ 897 |  |  |  |  |  |  |  |  |  | $ 771 |  |  |  |
COP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-recourse borrowings | 541 |  |  |  |  |  |  |  |  |  | 405 |  |  |  |  |  |  |  |  |
Borrowings, local currency |  |  |  |  |  |  | $ 2,088,803 |  |  |  |  |  |  |  |  |  | $ 1,966,019 |  |  |
PEN |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-recourse borrowings | 432 |  |  |  |  |  |  |  |  |  | 410 |  |  |  |  |  |  |  |  |
Borrowings, local currency | S/ |  |  |  |  |  |  |  | S/ 1,601 |  |  |  |  |  |  |  |  |  | S/ 1,561 |  |
NZD |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-recourse borrowings | 42 |  |  |  |  |  |  |  |  |  | 80 |  |  |  |  |  |  |  |  |
Borrowings, local currency |  |  |  |  |  |  |  |  | $ 66 |  |  |  |  |  |  |  |  |  | $ 126 |
Euro |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-recourse borrowings | $ 2,123 |  |  |  |  |  |  |  |  |  | $ 60 |  |  |  |  |  |  |  |  |
Borrowings, local currency | € |  |  |  |  |  |  |  |  |  | € 1,923 |  |  |  |  |  |  |  |  |  | € 56

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