Consolidated Statements of Equity (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Statement of Stockholders' Equity [Abstract]
Dividends declared per share (in dollars per share)	$ 0.87	$ 0.78
Dividend equivalents declared per share (in dollars per share)	$ 0.87	$ 0.78