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DERIVATIVE FINANCIAL INSTRUMENTS - Foreign Exchange Contract Derivative Positions (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Foreign exchange |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 63,083 | $ 39,284
Canadian dollars | Foreign exchange |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 11,689 | $ 7,539
Average Exchange Rate | 0.81 | 0.76
Canadian dollars | Cross currency interest rate swaps [Member] |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 5,566 | $ 6,868
Average Exchange Rate | 0.63 | 0.77
Canadian dollars | Foreign exchange options [Member] |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 0 | $ 2,030
Average Exchange Rate | 0 | 0.74
British pounds | Foreign exchange |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 12,089 | $ 3,986
Average Exchange Rate | 1.19 | 1.31
British pounds | Cross currency interest rate swaps [Member] |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 298 | $ 275
Average Exchange Rate | 1.48 | 1.49
European Union euros | Foreign exchange |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 9,939 | $ 4,561
Average Exchange Rate | 1.14 | 1.17
European Union euros | Cross currency interest rate swaps [Member] |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 848 | $ 1,914
Average Exchange Rate | 1.06 | 1.06
European Union euros | Foreign exchange options [Member] |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 1,430 | $ 245
Average Exchange Rate | 1.11 | 1.17
Australian dollars | Foreign exchange |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 4,791 | $ 2,632
Average Exchange Rate | 0.72 | 0.69
Australian dollars | Cross currency interest rate swaps [Member] |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 1,317 | $ 1,374
Average Exchange Rate | 0.98 | 0.53
Indian rupees | Foreign exchange |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 3,281 | $ 1,288
Average Exchange Rate | 78.90 | 77.56
Indian rupees | Foreign exchange options [Member] |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 572 | $ 0
Average Exchange Rate | 74.56 | 0
Chile, Pesos | Foreign exchange |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 0 | $ 159
Average Exchange Rate | 0 | 770.89
Korean won | Foreign exchange |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 756 | $ 700
Average Exchange Rate | 1,151 | 1,175
Chinese yuan1 | Foreign exchange |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 2,484 | $ 1,633
Average Exchange Rate | 6.02 | 7.05
Japanese yen | Foreign exchange |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 793 | $ 212
Average Exchange Rate | 111.27 | 105.82
Japanese yen | Cross currency interest rate swaps [Member] |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 750 | $ 750
Average Exchange Rate | 113.33 | 113.33
Colombian pesos | Foreign exchange |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 740 | $ 96
Average Exchange Rate | 3,937 | 3,621
Colombian pesos | Cross currency interest rate swaps [Member] |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 0 | $ 88
Average Exchange Rate | 0 | 3,880
Brazilian reais | Foreign exchange |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 1,291 | $ 276
Average Exchange Rate | 0.16 | 0.19
Brazilian reais | Futures contract [member] |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 175 | $ 105
Average Exchange Rate | 0.18 | 0.19
Sweden, Kronor | Foreign exchange |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 1,475 | $ 1,647
Average Exchange Rate | 9.08 | 8.58
Other currencies | Foreign exchange |  |
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items] |  |
Derivative, Notional Amount | $ 2,799 | $ 903

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