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DERIVATIVE FINANCIAL INSTRUMENTS - Notional Amount of Derivative Instruments Fair Value Through Profit or Loss (Details) $ in Millions | Dec. 31, 2022 USD ($) GWh MMBTU | Dec. 31, 2021 USD ($) GWh MMBTU
--- | --- | ---
Equity derivatives |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | $ 1,900 | $ 1,800
Fair value through profit or loss | Foreign exchange |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | 7,076 | 10,933
Fair value through profit or loss | Foreign exchange | Less than 1 year |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | 4,440 |
Fair value through profit or loss | Foreign exchange | 1 to 5 Years |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | 1,671 |
Fair value through profit or loss | Foreign exchange | Thereafter |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | 965 |
Fair value through profit or loss | Interest rates |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | 19,976 | 19,661
Fair value through profit or loss | Interest rates | Less than 1 year |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | 10,126 |
Fair value through profit or loss | Interest rates | 1 to 5 Years |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | 8,578 |
Fair value through profit or loss | Interest rates | Thereafter |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | 1,272 |
Fair value through profit or loss | Equity derivatives |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | 1,941 | $ 4,353
Fair value through profit or loss | Equity derivatives | Less than 1 year |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | 866 |
Fair value through profit or loss | Equity derivatives | 1 to 5 Years |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | 1,002 |
Fair value through profit or loss | Equity derivatives | Thereafter |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | $ 73 |
Fair value through profit or loss | Energy commodity instrument [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | GWh | 51,770,000,000 | 17,403,000,000
Fair value through profit or loss | Energy commodity instrument [Member] | Less than 1 year |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | GWh | 3,456,000,000 |
Fair value through profit or loss | Energy commodity instrument [Member] | 1 to 5 Years |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | GWh | 21,743,000,000 |
Fair value through profit or loss | Energy commodity instrument [Member] | Thereafter |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | GWh | 26,571,000,000 |
Fair value through profit or loss | Natural gas commodity instrument [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | MMBTU | 60,578,000 | 152,753,000
Fair value through profit or loss | Natural gas commodity instrument [Member] | Less than 1 year |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | MMBTU | 50,703,000 |
Fair value through profit or loss | Natural gas commodity instrument [Member] | 1 to 5 Years |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | MMBTU | 9,875,000 |
Fair value through profit or loss | Natural gas commodity instrument [Member] | Thereafter |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | MMBTU | 0 |
Elected for hedge accounting | Foreign exchange |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | $ 43,286 | $ 52,150
Elected for hedge accounting | Interest rates |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | $ 40,624 | $ 36,238
Elected for hedge accounting | Energy commodity instrument [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | GWh | 18,133,000,000 | 17,754,000,000
Elected for hedge accounting | Natural gas commodity instrument [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | MMBTU | 67,803,000 | 93,623,000
Elected for hedge accounting | Equity derivatives |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | $ 0 | $ 95
Elected for hedge accounting | Less than 1 year | Foreign exchange |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | 12,956 |
Elected for hedge accounting | Less than 1 year | Interest rates |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | $ 5,916 |
Elected for hedge accounting | Less than 1 year | Energy commodity instrument [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | GWh | 6,574,000,000 |
Elected for hedge accounting | Less than 1 year | Natural gas commodity instrument [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | MMBTU | 52,168,000 |
Elected for hedge accounting | Less than 1 year | Equity derivatives |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | $ 0 |
Elected for hedge accounting | 1 to 5 Years | Foreign exchange |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | 29,530 |
Elected for hedge accounting | 1 to 5 Years | Interest rates |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | $ 31,597 |
Elected for hedge accounting | 1 to 5 Years | Energy commodity instrument [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | GWh | 8,868,000,000 |
Elected for hedge accounting | 1 to 5 Years | Natural gas commodity instrument [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | MMBTU | 15,635,000 |
Elected for hedge accounting | 1 to 5 Years | Equity derivatives |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | $ 0 |
Elected for hedge accounting | Thereafter | Foreign exchange |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | 800 |
Elected for hedge accounting | Thereafter | Interest rates |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | $ 3,111 |
Elected for hedge accounting | Thereafter | Energy commodity instrument [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | GWh | 2,691,000,000 |
Elected for hedge accounting | Thereafter | Natural gas commodity instrument [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | MMBTU | 0 |
Elected for hedge accounting | Thereafter | Equity derivatives |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative, Notional Amount | $ 0 |

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