CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) (USD $)	0 Months Ended				3 Months Ended		9 Months Ended
	Oct. 24, 2013	Jul. 25, 2013	Apr. 25, 2013	Jan. 24, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
CONDENSED CONSOLIDATED STATEMENTS OF EQUITY
Common dividends, per share (in dollars per share)	$ 0.525	$ 0.525	$ 0.525	$ 0.525	$ 0.525	$ 0.50	$ 1.575	$ 1.50