Statements of Condensed Consolidated Equity (Parenthetical) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Statements of Condensed Consolidated Equity
Dividends (in dollars per share)	$ 0.06	$ 0.06
Distributions to noncontrolling interests (in dollars per common unit)	$ 0.95	$ 0.72