Dividends (Details) - $ / shares		3 Months Ended
	Jul. 19, 2016	Sep. 30, 2016	Mar. 31, 2016	Sep. 30, 2015
Dividends Payable [Line Items]
Common stock, dividends declared (in dollars per share)		$ 0.0950		$ 0.0925
2016 Q4 Dividend [Member]
Dividends Payable [Line Items]
Dividends payable, date declared		Jul. 19, 2016
Common stock, dividends declared (in dollars per share)	$ 0.095
Dividends payable, date of record		Aug. 15, 2016
Dividends payable, date paid		Aug. 31, 2016
2016 Annual Dividend [Member]
Dividends Payable [Line Items]
Common stock, dividends declared (in dollars per share)			$ 0.37
2017 Annual Dividend [Member]
Dividends Payable [Line Items]
Common stock, dividends declared (in dollars per share)	$ 0.38