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SHAREHOLDERS' EQUITY (Dividends) (Details) - $ / shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Class of Stock [Line Items] |  |  |  |
Cash dividends declared per common share (in usd per share) | $ 0.40 | $ 0.39 | $ 1.20 | $ 1.17
Series D Preferred Shares |  |  |  |
Class of Stock [Line Items] |  |  |  |
Cash dividends declared per preferred share (in usd per share) | 0.34375 | 0.34375 | 1.03125 | 1.03125
Series E Preferred Shares |  |  |  |
Class of Stock [Line Items] |  |  |  |
Cash dividends declared per preferred share (in usd per share) | $ 34.375 | $ 34.375 | $ 103.125 | $ 103.125

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