Common Equity Common Equity 8 (Details) - $ / shares					3 Months Ended
	Sep. 01, 2015	Jul. 06, 2015	Jun. 12, 2015	Apr. 16, 2015	Sep. 30, 2015	Jun. 30, 2015
Dividends Paid and Payable [Line Items]
Dividends Payable, Date Declared			Jun. 12, 2015			Apr. 16, 2015
Dividends Payable, Date to be Paid	Sep. 01, 2015	Jul. 06, 2015				Jun. 01, 2015
Common Stock, Dividends, Per Share, Declared		$ 0			$ 0.4575	$ 0.8629
Dividend Increase Percentage		8.30%
Dividends declared April 16, 2015, payable June 1, 2015 [Member]
Dividends Paid and Payable [Line Items]
Common Stock, Dividends, Per Share, Declared				$ 0.4225
Dividends declared June 12, 2015, payable July 6, 2015 [Member]
Dividends Paid and Payable [Line Items]
Common Stock, Dividends, Per Share, Declared			$ 0.2067
Dividends declared June 12, 2015, payable September 1, 2015 [Member]
Dividends Paid and Payable [Line Items]
Common Stock, Dividends, Per Share, Declared			$ 0.2337