Equity Common Stock Dividends (Details) - $ / shares		3 Months Ended				9 Months Ended
	Oct. 05, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Common Stock, Dividends, Per Share, Cash Paid		$ 0.13	$ 0.13	$ 0.13
Common Stock, Dividends, Per Share, Declared		$ 0.13			$ 0.12	$ 0.26	$ 0.24
Scenario, Forecast [Member]
Common Stock, Dividends, Per Share, Declared	$ 0.13