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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Millions |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Aug. 31, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023 | Mar. 28, 2023
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Directors' remuneration expense |  | $ 1 | $ 1 | $ 1 | $ 1 |  |
Purchase of financial assets |  | (209) | (111) | (387) | (343) |  |
Australian Regulated Utility Operation |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Proportion of ownership interest in associate | 7.90% |  |  |  |  |  |
Proceeds from sales of interests in associates | $ 435 |  |  |  |  |  |
Gains (losses) recognised | 30 |  |  |  |  |  |
Reclassification adjustments on exchange differences on translation, net of tax | $ 28 |  |  |  |  |  |
Revolving credit facility with Brookfield |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  | 1,000 |  | 1,000 |  |  |
Subsidiary and corporate borrowings |  | $ 0 | 0 | $ 0 | 0 | $ 0 |
Borrowings, adjustment to interest rate basis |  | 1.90% |  | 1.90% |  |  |
Brookfield |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Amounts payable, related party transactions |  | $ 165 |  | $ 165 |  | 300 |
Deposit balance |  | 0 |  | 0 |  | 0 |
Interest expense, related party transactions |  | 0 | 0 | 0 | 0 |  |
Credit facility, maximum borrowing capacity |  | 1,000 |  | 1,000 |  |  |
Subsidiary of Common Parent (Brookfield) |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Amounts payable, related party transactions |  | 25 |  | 25 |  | 35 |
Interest expense, related party transactions |  | 8 |  | 16 |  |  |
Subsidiary and corporate borrowings |  |  |  |  |  |  | $ 500
Corporate borrowings, related party transactions |  | 140 |  | 140 |  | 110 |
Borrowings, adjustment to interest rate basis |  |  |  |  |  |  | 2.10%
Subsidiary of Common Parent (Brookfield) | Brookfield Office Properties Inc. |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Right-of-use assets |  | 12 |  | $ 12 |  | 12 |
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% |  |  |
Revenue from sale of goods, related party transactions |  | 89 | 106 | $ 183 | 206 |  |
Amounts payable, related party transactions |  | 87 |  | 87 |  | $ 97 |
Revenue from sale of goods, related party transactions |  | 2 | 7 | 5 | 9 |  |
Related party expenses |  | $ 32 | $ 34 | $ 65 | $ 69 |  |

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