Equity - Dividends (Details) - $ / shares								6 Months Ended
	Aug. 25, 2016	May 26, 2016	Mar. 17, 2016	Nov. 24, 2015	Aug. 25, 2015	May 27, 2015	Mar. 20, 2015	Jun. 30, 2016
Dividends Payable [Line Items]
Dividend Per Share, Paid		$ 0.45	$ 0.45	$ 0.45	$ 0.42	$ 0.38	$ 0.34
Date Paid		May 26, 2016	Mar. 17, 2016	Nov. 24, 2015	Aug. 25, 2015	May 29, 2015	Mar. 20, 2015
First quarter 2015 dividend [Member]
Dividends Payable [Line Items]
Date of Record								Mar. 09, 2015
Second quarter 2015 dividend [Member]
Dividends Payable [Line Items]
Date of Record								May 18, 2015
Third quarter 2015 dividend [Member] [Member]
Dividends Payable [Line Items]
Date of Record								Aug. 17, 2015
Fourth quarter 2015 dividend [Member]
Dividends Payable [Line Items]
Date of Record								Nov. 16, 2015
first quarter 2016 dividend [Member]
Dividends Payable [Line Items]
Date of Record								Mar. 07, 2016
Second quarter dividend 2016 [Member]
Dividends Payable [Line Items]
Date of Record								May 16, 2016
Third quarter dividend 2016 [Member]
Dividends Payable [Line Items]
Date of Record								Aug. 15, 2016
Subsequent Event [Member]
Dividends Payable [Line Items]
Date Paid	Aug. 25, 2016
Common Stock, Dividends, Per Share, Declared	$ 0.45