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SHAREHOLDERS' EQUITY - Common Shares Issued and Outstanding (Details) - shares
shares in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Shares issued, balance at beginning of period (in shares)     176,580    
Total shares issued at end of period (in shares) 176,580   176,580    
Treasury shares, balance at beginning of period (in shares)     (91,806)    
Total treasury shares at end of period (in shares) (91,925)   (91,925)    
Total shares outstanding (in shares) 84,655   84,655   84,774
Common shares          
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Shares issued, balance at beginning of period (in shares) 176,580 176,580 176,580 176,580  
Shares issued (in shares) 0 0 0 0  
Total shares issued at end of period (in shares) 176,580 176,580 176,580 176,580  
Treasury shares, balance at beginning of period (in shares) (91,304) (91,827) (91,806) (92,227)  
Shares repurchased (in shares) (640) (8) (885) (197)  
Shares reissued (in shares) 19 22 766 611  
Total treasury shares at end of period (in shares) (91,925) (91,813) (91,925) (91,813)  
Total shares outstanding (in shares) 84,655 84,767 84,655 84,767