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SHAREHOLDERS' EQUITY (Narrative) (Details) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Class of Stock [Line Items]
Cash dividends declared per common share (in usd per share)	$ 0.4	$ 0.39
Series D Preferred Shares
Class of Stock [Line Items]
Cash dividends declared per preferred share (in usd per share)	0.34375	0.34375
Series E Preferred Shares
Class of Stock [Line Items]
Cash dividends declared per preferred share (in usd per share)	$ 34.375	$ 34.375

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Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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