Equity (Details) - Common Shares [Member] - $ / shares	3 Months Ended
Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018
Dividends on common shares/units
Dividend per Share/Unit (usd per share)	$ 0.38	$ 0.38	$ 0.38
Record Date	Sep. 28, 2018	Jun. 29, 2018	Mar. 29, 2018
Payable Date	Oct. 15, 2018	Jul. 16, 2018	Apr. 16, 2018

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

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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Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

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