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SHAREHOLDERS' EQUITY
 3 Months Ended
Mar. 31, 2023
Equity [Abstract]  
SHAREHOLDERS' EQUITY
The following table presents changes in common shares issued and outstanding:
  Three months ended March 31,
  20232022
Shares issued, balance at beginning of period176,580 176,580 
Shares issued— — 
Total shares issued at end of period176,580 176,580 
Treasury shares, balance at beginning of period(91,912)(91,806)
Shares repurchased(262)(245)
Shares reissued 777 747 
Total treasury shares at end of period(91,397)(91,304)
Total shares outstanding85,183 85,276 
Treasury Shares
The following table presents common shares repurchased from shares held in Treasury:
  Three months ended March 31,
  20232022
In the open market:
Total shares— — 
Total cost$— $— 
Average price per share(1)
$— $— 
From employees:(2)
Total shares262 245 
Total cost$15,945 $12,977 
Average price per share(1)
$60.82 $52.93 
Total shares repurchased:
Total shares262 245 
Total cost$15,945 $12,977 
Average price per share(1)
$60.82 $52.93 
(1) Calculated using whole numbers.
(2)  Shares are repurchased from employees to facilitate the satisfaction of their personal withholding tax liabilities that arise on the vesting of share-settled restricted stock units.
Dividends
The following table presents dividends declared and paid related to the Company's common and preferred shares:
Per share data
Dividends declaredDividends paid in period of declarationDividends paid in period following declaration
Three months ended March 31, 2023
   Common shares$0.44 $— $0.44 
   Series E preferred shares$34.38 $— $34.38 
Three months ended March 31, 2022
   Common shares$0.43 $— $0.43 
   Series E preferred shares$34.38 $— $34.38