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DERIVATIVE FINANCIAL INSTRUMENTS - Notional Amount of Derivative Positions (Details) $ in Millions | Dec. 31, 2021 USD ($) MMBTU GWh | Dec. 31, 2020 USD ($) MMBTU GWh
--- | --- | ---
Foreign exchange |  |
Disclosure of detailed information about financial instruments [line items] |  |
Derivative, Notional Amount | $ 63,083 | $ 39,284
Interest rates |  |
Disclosure of detailed information about financial instruments [line items] |  |
Derivative, Notional Amount | 55,899 | 61,111
Equity derivatives |  |
Disclosure of detailed information about financial instruments [line items] |  |
Derivative, Notional Amount | $ 4,448 | $ 2,081
Energy commodity instrument [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Nominal Amount of Commodity Derivatives | GWh | 35,156 | 27,564
Natural gas commodity instrument [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Nominal Amount of Commodity Derivatives | MMBTU | 246,375,000 | 121,468,000

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