Consolidated Statements of Equity (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Stockholders' Equity [Abstract]
Dividends declared per share (in dollars per share)	$ 0.50	$ 0.46
Dividend equivalents declared per share (in dollars per share)	$ 0.50	$ 0.46