Condensed Consolidated Statement of Equity (unaudited) (Parenthetical) - $ / shares			6 Months Ended
	May. 05, 2015	Jan. 12, 2015	Jun. 30, 2015	Jun. 30, 2014
Statement of Stockholders' Equity [Abstract]
Common dividends (in dollars per share)	$ 0.39	$ 0.39	$ 0.78	$ 0.74