Subsequent Events (Details) - $ / shares		3 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Mar. 31, 2015
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Cash Paid	[1]		$ 0.885	$ 0.885
Common Stock [Member]
Subsequent Event [Line Items]
Dividends Payable, Date Declared	[1]		May 20, 2016	Feb. 18, 2016
Dividends Payable, Date to be Paid	[1]		Jun. 30, 2016	Mar. 31, 2016
Dividends Payable, Date of Record	[1]		Jun. 17, 2016	Mar. 18, 2016
Dividend Declared [Member] | Common Stock [Member]
Subsequent Event [Line Items]
Dividends Payable, Date Declared		Aug. 02, 2016
Dividends Payable, Date to be Paid		Sep. 30, 2016
Dividends Payable, Date of Record		Sep. 16, 2016
Paid subsequent to current quarter end [Member]
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Cash Paid		$ 0.885

[1] Inclusive of dividends accrued for holders of unvested restricted stock units and payments of previously accrued dividends for holders of restricted stock units that have vested during the six months ended June 30, 2016.