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SHARE CAPITAL - Schedule of Share Capital (Details) $ / shares in Units, $ in Millions | Jun. 30, 2024 USD ($) $ / shares shares | Jun. 30, 2024 $ / shares | Mar. 31, 2024 shares | Dec. 31, 2023 USD ($) $ / shares shares | Dec. 31, 2023 $ / shares | Jun. 30, 2023 shares | Mar. 31, 2023 shares | Mar. 03, 2023 USD ($) | Dec. 31, 2022 shares
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Class A Senior Preferred Shares |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Par Value (in dollars per share) | $ / shares | $ 25.00 |  |  | $ 25.00 |  |  |  |  |
Preferred Shares Authorized (in shares) | 100,000,000 |  |  | 100,000,000 |  |  |  |  |
Preferred stock issued (in shares) | 0 |  |  | 0 |  |  |  |  |
Preferred stock, outstanding (in shares) | 0 |  |  | 0 |  |  |  |  |
Preferred stock, carrying amount | $ | $ 0 |  |  | $ 0 |  |  |  |  |
Class B Senior Preferred Shares |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Par Value (in dollars per share) | $ / shares |  | $ 25.00 |  |  | $ 25.00 |  |  |  |
Preferred Shares Authorized (in shares) | 100,000,000 |  |  | 100,000,000 |  |  |  |  |
Preferred stock issued (in shares) | 0 |  |  | 0 |  |  |  |  |
Preferred stock, outstanding (in shares) | 0 |  |  | 0 |  |  |  |  |
Preferred stock, carrying amount | $ | $ 0 |  |  | $ 0 |  |  |  |  |
Class A Junior Preferred Shares |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Par Value (in dollars per share) | $ / shares | $ 25.00 |  |  | $ 25.00 |  |  |  |  |
Preferred Shares Authorized (in shares) | 1,000,000,000 |  |  | 1,000,000,000 |  |  |  |  |
Preferred stock issued (in shares) | 100,460,280 |  |  | 100,460,280 |  |  |  |  |
Preferred stock, outstanding (in shares) | 100,460,280 |  |  | 100,460,280 |  |  |  |  |
Preferred stock, carrying amount | $ | $ 2,751 |  |  | $ 2,694 |  |  |  |  |
Class B Junior Preferred Shares |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Par Value (in dollars per share) | $ / shares |  | $ 25.00 |  |  | $ 25.00 |  |  |  |
Preferred Shares Authorized (in shares) | 1,000,000,000 |  |  | 1,000,000,000 |  |  |  |  |
Preferred stock issued (in shares) | 0 |  |  | 0 |  |  |  |  |
Preferred stock, outstanding (in shares) | 0 |  |  | 0 |  |  |  |  |
Preferred stock, carrying amount | $ | $ 0 |  |  | $ 0 |  |  |  |  |
Exchangeable Class A Shares |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Par value (in dollars per share) | $ / shares | $ 33.26 |  |  | $ 33.42 |  |  |  |  |
Shares authorized (in shares) | 1,000,000,000 |  |  | 1,000,000,000 |  |  |  |  |
Shares issued (in shares) | 16,879,755 |  |  | 15,311,749 |  |  |  |  |
Shares outstanding (in shares) | 16,879,755 |  | 16,834,918 | 15,311,749 |  | 10,450,952 | 10,450,952 |  | 9,594,989
Common stock, carrying amount | $ | $ 666 |  |  | $ 615 |  |  |  | $ 10 |
Exchangeable Class A-1 Shares |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Par value (in dollars per share) | $ / shares | $ 33.26 |  |  | $ 33.42 |  |  |  |  |
Shares authorized (in shares) | 500,000,000 |  |  | 500,000,000 |  |  |  |  |
Shares issued (in shares) | 26,505,771 |  |  | 28,073,777 |  |  |  |  |
Shares outstanding (in shares) | 26,505,771 |  | 26,550,608 | 28,073,777 |  | 0 | 0 |  | 0
Common stock, carrying amount | $ | $ 904 |  |  | $ 961 |  |  |  |  |
Class B Shares |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Par value (in dollars per share) | $ / shares | $ 33.26 |  |  | $ 33.42 |  |  |  |  |
Shares authorized (in shares) | 500,000 |  |  | 500,000 |  |  |  |  |
Shares issued (in shares) | 24,000 |  |  | 24,000 |  |  |  |  |
Shares outstanding (in shares) | 24,000 |  | 24,000 | 24,000 |  | 24,000 | 24,000 |  | 24,000
Common stock, carrying amount | $ | $ 1 |  |  | $ 1 |  |  |  |  |
Class C Shares |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Par value (in dollars per share) | $ / shares | $ 1 |  |  | $ 1 |  |  |  |  |
Shares authorized (in shares) | 1,000,000,000 |  |  | 1,000,000,000 |  |  |  |  |
Shares issued (in shares) | 128,643,406 |  |  | 102,056,784 |  |  |  |  |
Shares outstanding (in shares) | 128,643,406 |  | 102,056,784 | 102,056,784 |  | 41,314,891 | 41,314,891 |  | 40,934,623
Common stock, carrying amount | $ | $ 4,726 |  |  | $ 3,607 |  |  |  |  |

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