Dividends (Details) - $ / shares		3 Months Ended
	Jul. 21, 2015	Sep. 30, 2015	Sep. 30, 2014
Dividends Payable [Line Items]
Common stock, dividends, per share, declared (in dollars per share)		$ 0.185	$ 0.180
2015 Q4 Dividend [Member]
Dividends Payable [Line Items]
Common stock, dividends, per share, declared (in dollars per share)	$ 0.185
Dividends payable, date declared		Jul. 21, 2015
Dividends payable, date of record		Aug. 14, 2015
Dividends payable, date to be paid		Aug. 31, 2015
2015 Annual Dividend [Member]
Dividends Payable [Line Items]
Common stock, dividends, per share, declared (in dollars per share)	0.72
2016 Annual Dividend [Member]
Dividends Payable [Line Items]
Common stock, dividends, per share, declared (in dollars per share)	$ 0.74