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FAIR VALUE OF FINANCIAL INSTRUMENTS - Allocation of Financial Instruments (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Disclosure of financial assets [line items] |  |
Financial assets | $ 5,400 | $ 4,305
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 35,905 | 29,317
Financial liabilities and other liabilities, excluding lease liabilities | 39,745 | 33,120
Fair value through profit or loss |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 501 | 931
Fair value through OCI |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 0 | 0
Amortized Cost |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 39,244 | 32,189
Fair value through profit or loss |  |
Disclosure of financial assets [line items] |  |
Financial assets | 1,171 | 846
Fair value through OCI |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 239
Amortized Cost |  |
Disclosure of financial assets [line items] |  |
Financial assets | 4,229 | 3,220
Corporate borrowings |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 2,719 | 3,158
Corporate borrowings | Fair value through profit or loss |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 0 | 0
Corporate borrowings | Fair value through OCI |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 0 | 0
Corporate borrowings | Amortized Cost |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 2,719 | 3,158
Non-recourse borrowings (current and non-current) |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 26,534 | 20,020
Non-recourse borrowings (current and non-current) | Fair value through profit or loss |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 0 | 0
Non-recourse borrowings (current and non-current) | Fair value through OCI |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 0 | 0
Non-recourse borrowings (current and non-current) | Amortized Cost |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 26,534 | 20,020
Accounts payable and other |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 3,392 | 2,745
Accounts payable and other | Fair value through profit or loss |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 0 | 0
Accounts payable and other | Fair value through OCI |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 0 | 0
Accounts payable and other | Amortized Cost |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 3,392 | 2,745
Financial Liabilities |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 3,240 | 3,374
Financial Liabilities | Fair value through profit or loss |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 501 | 931
Financial Liabilities | Fair value through OCI |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 0 | 0
Financial Liabilities | Amortized Cost |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 2,739 | 2,443
Lease liabilities |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 3,840 | 3,803
Lease liabilities | Fair value through profit or loss |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 0 | 0
Lease liabilities | Fair value through OCI |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 0 | 0
Lease liabilities | Amortized Cost |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 3,840 | 3,803
Preferred shares |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 20 | 20
Preferred shares | Fair value through profit or loss |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 0 | 0
Preferred shares | Fair value through OCI |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 0 | 0
Preferred shares | Amortized Cost |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 20 | 20
Cash and cash equivalents |  |
Disclosure of financial assets [line items] |  |
Financial assets | 1,406 | 867
Cash and cash equivalents | Fair value through profit or loss |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
Cash and cash equivalents | Fair value through OCI |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
Cash and cash equivalents | Amortized Cost |  |
Disclosure of financial assets [line items] |  |
Financial assets | 1,406 | 867
Accounts receivable and other |  |
Disclosure of financial assets [line items] |  |
Financial assets | 2,718 | 2,031
Accounts receivable and other | Fair value through profit or loss |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
Accounts receivable and other | Fair value through OCI |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
Accounts receivable and other | Amortized Cost |  |
Disclosure of financial assets [line items] |  |
Financial assets | 2,718 | 2,031
Financial assets (current and non-current) |  |
Disclosure of financial assets [line items] |  |
Financial assets | 1,276 | 1,407
Financial assets (current and non-current) | Fair value through profit or loss |  |
Disclosure of financial assets [line items] |  |
Financial assets | 1,171 | 846
Financial assets (current and non-current) | Fair value through OCI |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 239
Financial assets (current and non-current) | Amortized Cost |  |
Disclosure of financial assets [line items] |  |
Financial assets | $ 105 | $ 322

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