Subsequent Events (Tables)

6 Months Ended

Jun. 30, 2014

Subsequent Events [Abstract]

Schedule of Dividends Declared

Class of stock/units	Quarterly Amount per Share or Unit	Record Date	Payment Date
Common	$0.17	August 14, 2014	August 29, 2014
Preferred (per depositary share or unit):
Series K	$0.406250	August 14, 2014	August 29, 2014
Series L	$0.412500	August 14, 2014	August 29, 2014