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COMMON SHARE CAPITAL (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
COMMON SHARE CAPITAL    
Balance at beginning of the period (shares) 1,244,332,772  
Balance at beginning of the period $ 6,649.6  
Repurchase and cancellation of shares (in shares) (78,857,250) (17,608,678)
Balance at end of the period (shares) 1,221,891,341 1,244,332,772
Total common share capital $ 4,449.5 $ 4,427.7
Balance at end of the period $ 5,882.2 $ 6,649.6
Common share capital    
COMMON SHARE CAPITAL    
Balance at beginning of the period (shares) 1,244,333,000 1,258,320,000
Balance at beginning of the period $ 4,427.7 $ 4,473.7
Issued on acquisition of Great Bear (in shares) 49,268,000  
Issued on acquisition of Great Bear $ 271.6  
Issued under share option and restricted share plans (shares) 7,147,000 3,621,000
Issued under share option and restricted share plans $ 37.3 $ 16.9
Repurchase and cancellation of shares (in shares) (78,857,000) (17,608,000)
Repurchase and cancellation of shares $ (287.1) $ (62.9)
Balance at end of the period (shares) 1,221,891,000 1,244,333,000
Balance at end of the period $ 4,449.5 $ 4,427.7