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DERIVATIVE FINANCIAL INSTRUMENTS - Hedge Classification (Details) bbl in Thousands, $ in Millions | 12 Months Ended
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Dec. 31, 2022 USD ($) MMBTU GWh | Dec. 31, 2021 USD ($) GWh MMBTU bbl
Cash flow hedges |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal amount of derivative positions | $ 47,860 | $ 43,776
Gains (losses) on cash flow hedges, before tax | 2,081 | 582
Ineffective Portion | 13 | 24
Net investment hedges |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal amount of derivative positions | 35,198 | 43,997
Gains (losses) on hedges of net investments in foreign operations, before tax | 2,998 | 407
Ineffective Portion | 0 | (14)
Cash flow hedges and hedges of net investment in foreign operations [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal amount of derivative positions | 83,058 | 87,773
Gain (loss) on hedge effectiveness recognised in other comprehensive income | 5,079 | 989
Ineffective Portion | $ 13 | $ 10
Oil and gas assets [member] | Cash flow hedges |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Number in Barrels of Commodity Derivatives | bbl |  | 1,152
Energy commodity instrument [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | GWh | 69,902 | 35,156
Energy commodity instrument [Member] | Cash flow hedges |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | GWh | 18,133 | 17,753
Natural gas commodity instrument [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | MMBTU | 128,381,000 | 246,375,000
Natural gas commodity instrument [Member] | Cash flow hedges |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Nominal Amount of Commodity Derivatives | MMBTU | 67,803,000 | 93,623,000

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