Consolidated Statement Of Changes In Equity (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement of Stockholders' Equity [Abstract]
Dividends (in usd per share)	$ 0.77	$ 0.70	$ 2.29	$ 1.10