Subsequent Events (Tables)

9 Months Ended

Sep. 30, 2011

Subsequent Events [Abstract]

Schedule Of Dividends Declared And Distributions Per Unit

Share Class	Series C Preferred Stock		Series D Preferred Stock		Series E Preferred Stock			Common stock and common unit
Dividend and distribution amount	$	0.273438	$	0.343750	$	0.515278	(1)	$	0.680000
Dividend and distribution payable date		December 30, 2011		December 30, 2011		December 30, 2011			January 13, 2012
Dividend payable to shareholders of record on		December 15, 2011		December 15, 2011		December 15, 2011			December 15, 2011
Annual equivalent rate of dividend and distribution	$	1.094	$	1.375	$	1.750		$	2.720

(1) Represents a pro rata dividend from and including the original issue date to and including December 31, 2011.