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SHAREHOLDERS' EQUITY (Tables) | 6 Months Ended
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Jun. 30, 2023
Equity [Abstract] |
COMMON SHARES ISSUED AND OUTSTANDING | The following table presents changes in common shares issued and outstanding:
|  | Three months ended June 30, |  | Six months ended June 30, |  |  |  |
|  | 2023 |  | 2022 |  | 2023 |  | 2022 |  |  |  |  |  |
| Shares issued, balance at beginning of period | 176,580 |  |  | 176,580 |  |  | 176,580 |  |  | 176,580 |  |  |  |  |  |  |
| Shares issued | — |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |
| Total shares issued at end of period | 176,580 |  |  | 176,580 |  |  | 176,580 |  |  | 176,580 |  |  |  |  |  |  |
| Treasury shares, balance at beginning of period | (91,397) |  |  | (91,304) |  |  | (91,912) |  |  | (91,806) |  |  |  |  |  |  |
| Shares repurchased | (20) |  |  | (640) |  |  | (282) |  |  | (885) |  |  |  |  |  |  |
| Shares reissued | 53 |  |  | 19 |  |  | 830 |  |  | 766 |  |  |  |  |  |  |
| Total treasury shares at end of period | (91,364) |  |  | (91,925) |  |  | (91,364) |  |  | (91,925) |  |  |  |  |  |  |
| Total shares outstanding | 85,216 |  |  | 84,655 |  |  | 85,216 |  |  | 84,655 |  |  |  |  |  |  |
SHARE REPURCHASES | The following table presents common shares repurchased from shares held in Treasury:
|  | Three months ended June 30, |  | Six months ended June 30, |  |  |  |
|  | 2023 |  | 2022 |  | 2023 |  | 2022 |  |  |  |  |  |
| In the open market: |  |  |  |  |  |  |  |  |  |  |  |  |
| Total shares | — |  |  | 634 |  |  | — |  |  | 634 |  |  |  |  |  |  |
| Total cost | $ | — |  |  | $ | 34,987 |  |  | $ | — |  |  | $ | 34,987 |  |  |  |  |  |  |
| Average price per share(1) | $ | — |  |  | $ | 55.22 |  |  | $ | — |  |  | $ | 55.22 |  |  |  |  |  |  |
| From employees:(2) |  |  |  |  |  |  |  |  |  |  |  |  |
| Total shares | 20 |  |  | 6 |  |  | 282 |  |  | 251 |  |  |  |  |  |  |
| Total cost | $ | 1,106 |  |  | $ | 369 |  |  | $ | 17,051 |  |  | $ | 13,346 |  |  |  |  |  |  |
| Average price per share(1) | $ | 53.95 |  |  | $ | 60.02 |  |  | $ | 60.32 |  |  | $ | 53.10 |  |  |  |  |  |  |
| Total shares repurchased: |  |  |  |  |  |  |  |  |  |  |  |  |
| Total shares | 20 |  |  | 640 |  |  | 282 |  |  | 885 |  |  |  |  |  |  |
| Total cost | $ | 1,106 |  |  | $ | 35,356 |  |  | $ | 17,051 |  |  | $ | 48,333 |  |  |  |  |  |  |
| Average price per share(1) | $ | 53.95 |  |  | $ | 55.27 |  |  | $ | 60.32 |  |  | $ | 54.62 |  |  |  |  |  |  |
(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 declared |  | Dividends paid in period of declaration |  | Dividends paid in period following declaration |
| Three months ended June 30, 2023 |  |  |  |  |  |
| Common shares | $ | 0.44 |  |  | $ | — |  |  | $ | 0.44 |  |
| Series E preferred shares | $ | 34.38 |  |  | $ | — |  |  | $ | 34.38 |  |
| Three months ended June 30, 2022 |  |  |  |  |  |
| Common shares | $ | 0.43 |  |  | $ | — |  |  | $ | 0.43 |  |
| Series E preferred shares | $ | 34.38 |  |  | $ | — |  |  | $ | 34.38 |  |
| Six months ended June 30, 2023 |  |  |  |  |  |
| Common shares | $ | 0.88 |  |  | $ | 0.44 |  |  | $ | 0.44 |  |
| Series E preferred shares | $ | 68.75 |  |  | $ | 34.38 |  |  | $ | 34.38 |  |
| Six months ended June 30, 2022 |  |  |  |  |  |
| Common shares | $ | 0.86 |  |  | $ | 0.43 |  |  | $ | 0.43 |  |
| Series E preferred shares | $ | 68.75 |  |  | $ | 34.38 |  |  | $ | 34.38 |  |

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