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SHAREHOLDERS' EQUITY (Tables) | 3 Months Ended
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Mar. 31, 2020
Equity [Abstract] |
COMMON SHARES ISSUED AND OUTSTANDING | The following table presents changes in common shares issued and outstanding:
|  | Three months ended March 31, |  |  |  |  |  |  |
|  | 2020 |  | 2019 |  |  |  |  |
| Shares issued, balance at beginning of period | 176,580 |  |  | 176,580 |  |  |  |  |  |
| Shares issued | — |  |  | — |  |  |  |  |  |
| Total shares issued at end of period | 176,580 |  |  | 176,580 |  |  |  |  |  |
| Treasury shares, balance at beginning of period | (92,621) |  |  | (92,994) |  |  |  |  |  |
| Shares repurchased | (150) |  |  | (157) |  |  |  |  |  |
| Shares reissued | 489 |  |  | 505 |  |  |  |  |  |
| Total treasury shares at end of period | (92,282) |  |  | (92,646) |  |  |  |  |  |
| Total shares outstanding | 84,298 |  |  | 83,934 |  |  |  |  |  |
SHARE REPURCHASES | The following table presents common share repurchased from shares held in Treasury:
|  | Three months ended March 31, |  |  |  |  |  |  |
|  | 2020 |  | 2019 |  |  |  |  |
| In the open market: |  |  |  |  |  |  |  |
| Total shares | — |  |  | — |  |  |  |  |  |
| Total cost | $ | — |  |  | $ | — |  |  |  |  |  |
| Average price per share(1) | $ | — |  |  | $ | — |  |  |  |  |  |
| From employees:(2) |  |  |  |  |  |  |  |
| Total shares | 150 |  |  | 157 |  |  |  |  |  |
| Total cost | $ | 8,492 |  |  | $ | 9,003 |  |  |  |  |  |
| Average price per share(1) | $ | 56.43 |  |  | $ | 57.17 |  |  |  |  |  |
| Total shares repurchased: |  |  |  |  |  |  |  |
| Total shares | 150 |  |  | 157 |  |  |  |  |  |
| Total cost | $ | 8,492 |  |  | $ | 9,003 |  |  |  |  |  |
| Average price per share(1) | $ | 56.43 |  |  | $ | 57.17 |  |  |  |  |  |
(1) Calculated using whole numbers. (2) Shares are repurchased from employees to satisfy withholding tax liabilities related to 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 March 31, 2019 |  |  |  |  |  |
Common shares | $ | 0.40 |  |  | $ | — |  |  | $ | 0.40 |  |
Series D preferred shares | $ | 0.34 |  |  | $ | — |  |  | $ | 0.34 |  |
Series E preferred shares | $ | 34.38 |  |  | $ | — |  |  | $ | 34.38 |  |
Three months ended March 31, 2020 |  |  |  |  |  |
Common shares | $ | 0.41 |  |  | $ | — |  |  | $ | 0.41 |  |
Series D preferred shares(1) | $ | — |  |  | $ | — |  |  | $ | — |  |
Series E preferred shares | $ | 34.38 |  |  | $ | — |  |  | $ | 34.38 |  |
(1) On January 17, 2020, the Company redeemed all 9,000,000 Series D preferred shares, for an aggregate liquidation preference of $225 million. The final dividend on the Series D preferred shares was declared in 2019.

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