Condensed Consolidated Statements of Changes in Equity (Unaudited) (Parentheticals) (Parent [Member], USD $)	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Dividends, per common share	$ 0.54	$ 0.48
Series F Preferred Stock [Member]
Dividends, per Depositary share	$ 1.2468	$ 1.2468
Series G Preferred Stock [Member]
Dividends, per Depositary share	$ 1.4532	$ 1.4532
Series H Preferred Stock [Member]
Dividends, per Depositary share	$ 1.2989	$ 0.1485