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SHAREHOLDERS' EQUITY (Tables) | 6 Months Ended
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Jun. 30, 2022
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, |
|  | 2022 |  | 2021 |  |  | 2022 |  | 2021 |
| 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 | (91,304) |  |  | (91,827) |  |  |  | (91,806) |  |  | (92,227) |  |
| Shares repurchased | (640) |  |  | (8) |  |  |  | (885) |  |  | (197) |  |
| Shares reissued | 19 |  |  | 22 |  |  |  | 766 |  |  | 611 |  |
| Total treasury shares at end of period | (91,925) |  |  | (91,813) |  |  |  | (91,925) |  |  | (91,813) |  |
| Total shares outstanding | 84,655 |  |  | 84,767 |  |  |  | 84,655 |  |  | 84,767 |  |
SHARE REPURCHASES | The following table presents common shares repurchased from shares held in Treasury:
|  | Three months ended June 30, |  |  | Six months ended June 30, |
|  | 2022 |  | 2021 |  |  | 2022 |  | 2021 |
| In the open market:(1) |  |  |  |  |  |  |  |  |
| Total shares | 634 |  |  | — |  |  |  | 634 |  |  | — |  |
| Total cost | $ | 34,987 |  |  | $ | — |  |  |  | $ | 34,987 |  |  | $ | — |  |
| Average price per share(2) | $ | 55.22 |  |  | $ | — |  |  |  | $ | 55.22 |  |  | $ | — |  |
| From employees:(3) |  |  |  |  |  |  |  |  |
| Total shares | 6 |  |  | 8 |  |  |  | 251 |  |  | 197 |  |
| Total cost | $ | 369 |  |  | $ | 439 |  |  |  | $ | 13,346 |  |  | $ | 9,819 |  |
| Average price per share(2) | $ | 60.02 |  |  | $ | 53.08 |  |  |  | $ | 53.10 |  |  | $ | 49.87 |  |
| Total shares repurchased: |  |  |  |  |  |  |  |  |
| Total shares | 640 |  |  | 8 |  |  |  | 885 |  |  | 197 |  |
| Total cost | $ | 35,356 |  |  | $ | 439 |  |  |  | $ | 48,333 |  |  | $ | 9,819 |  |
| Average price per share(2) | $ | 55.27 |  |  | $ | 53.08 |  |  |  | $ | 54.62 |  |  | $ | 49.87 |  |
(1) Shares are repurchased pursuant to the Company's Board-authorized share repurchase program announced in December 2021, effective January 1, 2022 through to December 31, 2022. (2) Calculated using whole numbers. (3) 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, 2022 |  |  |  |  |  |
| Common shares | $ | 0.43 |  |  | $ | — |  |  | $ | 0.43 |  |
| Series E preferred shares | $ | 34.38 |  |  | $ | — |  |  | $ | 34.38 |  |
| Three months ended June 30, 2021 |  |  |  |  |  |
| Common shares | $ | 0.42 |  |  | $ | — |  |  | $ | 0.42 |  |
| Series E preferred shares | $ | 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 |  |
| Six months ended June 30, 2021 |  |  |  |  |  |
| Common shares | $ | 0.84 |  |  | $ | 0.42 |  |  | $ | 0.42 |  |
| Series E preferred shares | $ | 68.75 |  |  | $ | 34.38 |  |  | $ | 34.38 |  |

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