Consolidated Statements of Equity (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Statement of Stockholders' Equity [Abstract]
Dividends declared per share (in dollars per share)	$ 1.18	$ 1.06
Dividend equivalents declared per share (in dollars per share)	$ 1.18	$ 1.06