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RELATED PARTY TRANSACTIONS (Details) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Nov. 29, 2020
Disclosure of transactions between related parties [line items] |  |  |  |  |
Director fees |  | $ 1,000,000 | $ 1,000,000 | $ 1,000,000 |
Asset management fee as percent per quarter |  | 0.3125% |  |  |
Asset management fee, percent |  | 1.25% |  |  |
Revolving credit facility with Brookfield |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |
Credit facility, maximum borrowing capacity |  | $ 500,000,000 |  |  |
Non-recourse borrowings |  | $ 0 | 0 |  |
Service Provider |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |
Asset management fee as percent per quarter |  | 0.3125% |  |  |
Asset management fee, percent |  | 1.25% |  |  |
Services received, related party transactions |  | $ 302,000,000 | 270,000,000 | 214,000,000 |
Amounts payable, related party transactions |  | 89,000,000 | 76,000,000 |  |
Subsidiary of Common Parent (Brookfield) |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |
Amounts payable, related party transactions |  | 82,000,000 | 99,000,000 |  |
Amounts receivable, related party transactions |  | 21,000,000 | 21,000,000 |  |
Subsidiary of Common Parent (Brookfield) | Brookfield Office Properties Inc. |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |
Services received, related party transactions |  | 1,000,000 | 15,000,000 | 5,000,000 |
Revenue from rendering of services, related party transactions |  | 9,000,000 | 33,000,000 | 16,000,000 |
Right-of-use assets |  | 12,000,000 | 11,000,000 |  |
Subsidiary of Common Parent (Brookfield) | Brookfield Business Partners LP | U.K. ports operation |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |
Revenue from sale of goods, related party transactions |  | 3,000,000 | 4,000,000 | 4,000,000 |
Subsidiary of Common Parent (Brookfield) | Brookfield Renewable Partners L.P. |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |
Services received, related party transactions |  | 1,000,000 | 52,000,000 | 11,000,000 |
Revenue from sale of goods, related party transactions |  | $ 0 | 3,000,000 | 1,000,000 |
Subsidiary of Common Parent (Brookfield) | Bottom of range |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |
Amounts payable, related party transactions, interest rate |  | 1.70% |  |  |
Subsidiary of Common Parent (Brookfield) | Top of range |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |
Amounts payable, related party transactions, interest rate |  | 8.50% |  |  |
Brookfield |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |
Amounts receivable, related party transactions |  |  |  |  | $ 65,000,000
Deposit balance |  | $ 545,000,000 | 1,000,000 |  |
Earned interest on deposits |  | $ 1,000,000 | $ 4,000,000 | $ 0 |
Gain (loss) of derecognised financial assets at date of transfer | $ 0 |  |  |  |

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