Consolidated Statements of Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Stockholders' Equity [Abstract]
Dividends declared per share (in dollars per share)	$ 0.68	$ 0.62
Dividend equivalents declared per share (in dollars per share)	$ 0.68	$ 0.62