Condensed Consolidated Statements of Changes in Equity (Unaudited) (Parentheticals) (Parent [Member], USD $)	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Dividends, per common share	$ 0.36	$ 0.32
Series F Preferred Stock [Member]
Dividends, per Depositary Share	$ 0.8312	$ 0.8312
Series G Preferred Stock [Member]
Dividends, per Depositary Share	$ 0.9688	$ 0.9688
Series H Preferred Stock [Member]
Dividends, per Depositary Share	$ 0.8625