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EQUITY - Narrative (Details) | 12 Months Ended |
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Dec. 31, 2021 USD ($) shares $ / shares | Dec. 31, 2020 USD ($) shares $ / shares | Dec. 31, 2021 $ / shares | Dec. 31, 2021 USD ($) shares
Disclosure of classes of share capital [line items] |  |  |  |
Dividends paid, ordinary shares per share | $ / shares | $ 0.52 | $ 0.48 |  |
Expense incurred with respect to MSOP | $ 25,000,000 | $ 24,000,000 |  |
Expense from share-based payment transactions with employees | $ 121,000,000 | 94,000,000 |  |
Management Share Option Plan | Equity-Settled Share-Based Payment Arrangement |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Weighted-average fair value of a unit |  | 5.54 |  | $ 6.97
Escrowed Stock Plan | Equity-Settled Share-Based Payment Arrangement |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Weighted-average fair value of a unit |  | 5.54 |  | 6.99
Deferred Stock Units and Restricted Stock Units | Employees and Directors | Cash-Settled Share-Based Payment Arrangement |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Share based awards, vesting period | 5 years |  |  |
Expense from share-based payment transactions with employees | $ 11,000,000 | 5,000,000 |  |
Share Options Vested In Share-Based Payment Arrangement | $ 1,900,000,000 | $ 1,300,000,000 |  |
Reinsurance |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Special Dividends |  |  |  | $ 538,000,000
Common Class A | Management Share Option Plan | Executives [Member] | Top of range | Equity-Settled Share-Based Payment Arrangement |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Share based awards, vesting period | 5 years |  |  |
Share-Based Compensation Arrangement By Share-Based Payment Award, Expiration Period1 | 10 years |  |  |
Common Class A | Escrowed Stock Plan | Executives [Member] | Equity-Settled Share-Based Payment Arrangement |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Number of shares purchased (in shares) | shares | 5,300,000 | 3,800,000 |  |
Expense from share-based payment transactions with employees | $ 41,000,000 | $ 35,000,000 |  |
Common Class A | Escrowed Stock Plan | Executives [Member] | Top of range | Equity-Settled Share-Based Payment Arrangement |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Share based awards, vesting period | 5 years |  |  |
Share-Based Compensation Arrangement By Share-Based Payment Award, Expiration Period1 | 10 years |  |  |
Common Class A | Restricted Stock | Executives [Member] | Equity-Settled Share-Based Payment Arrangement |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Share based awards, vesting period | 5 years |  |  |
Expense from share-based payment transactions with employees | $ 43,000,000 | $ 30,000,000 |  |
Share based awards, hold period | 5 years |  |  |
Number of instruments granted in share-based payment arrangement | shares | 3,100,000 | 1,000,000 |  |
Number of instruments granted in share-based payment arrangement, converted | shares | 1,500,000 |  |  |
Preferred shares |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Par value per share (in cad per share) | $ / shares |  |  | $ 25.00 |
Common shares | Common Class B |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Number of shares authorised (in shares) | shares |  |  |  | 85,120
Common shares | Common Class A | Brookfield Property Partners L.P. [Member] |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Number of shares issued | shares |  |  |  | 60,900,000

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