Dividends (Details) - $ / shares		3 Months Ended		9 Months Ended
	Jan. 16, 2018	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Dividends Payable [Line Items]
Cash dividends declared on common stock (in dollars per share)		$ 0.0975	$ 0.0950	$ 0.2925	$ 0.2850
2018 Q2 Dividend [Member]
Dividends Payable [Line Items]
Dividends payable, date declared				Jan. 16, 2018
Cash dividends declared on common stock (in dollars per share)	$ 0.0975
Dividends payable, date of record				Feb. 15, 2018
Dividends payable, date paid				Feb. 28, 2018
2018 Annual Dividend [Member]
Dividends Payable [Line Items]
Cash dividends declared on common stock (in dollars per share)	$ 0.39