Condensed Consolidated Statements of Changes in Equity (Unaudited) (Parentheticals) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Dividends per Common share	$ 0.45	$ 0.42
Series H Preferred Stock [Member]
Dividends per Depositary share	$ 0.8625	$ 0.8625
Series I Preferred Stock [Member]
Dividends per Depositary share	$ 0.7500	$ 0.7500
Series J Preferred Stock [Member]
Dividends per Depositary share	$ 0.6875	$ 0.6875
Series K Preferred Stock [Member]
Dividends per Depositary share	$ 0.7032	$ 0.7032