Shareholders' Equity and Partners' Capital (Allocations of Dividends and Declared and Paid For Income Tax Purposes) (Details) (USD $)	10 Months Ended	12 Months Ended
	Nov. 04, 2012 quarterly_dividend_payment	Dec. 31, 2013 Common Stock [Member]	Dec. 31, 2012 Common Stock [Member]	Dec. 31, 2011 Common Stock [Member]	Dec. 31, 2013 Series C Preferred Stock [Member]	Dec. 31, 2012 Series C Preferred Stock [Member]	Dec. 31, 2011 Series C Preferred Stock [Member]	Dec. 31, 2013 Series D Preferred Stock [Member]	Dec. 31, 2012 Series D Preferred Stock [Member]	Dec. 31, 2011 Series D Preferred Stock [Member]	Dec. 31, 2013 Series E Preferred Stock [Member]	Dec. 31, 2012 Series E Preferred Stock [Member]	Dec. 31, 2011 Series E Preferred Stock [Member]	Dec. 31, 2013 Preferred Stock [Member]	Dec. 31, 2012 Preferred Stock [Member]	Dec. 31, 2011 Preferred Stock [Member]	Dec. 31, 2013 Ordinary Income [Member] Common Stock [Member]	Dec. 31, 2012 Ordinary Income [Member] Common Stock [Member]	Dec. 31, 2011 Ordinary Income [Member] Common Stock [Member]	Dec. 31, 2013 Ordinary Income [Member] Preferred Stock [Member]	Dec. 31, 2012 Ordinary Income [Member] Preferred Stock [Member]	Dec. 31, 2011 Ordinary Income [Member] Preferred Stock [Member]	Dec. 31, 2013 Capital Gains 25% rate [Member] Common Stock [Member]	Dec. 31, 2012 Capital Gains 25% rate [Member] Common Stock [Member]	Dec. 31, 2011 Capital Gains 25% rate [Member] Common Stock [Member]	Dec. 31, 2013 Capital Gains 25% rate [Member] Preferred Stock [Member]	Dec. 31, 2012 Capital Gains 25% rate [Member] Preferred Stock [Member]	Dec. 31, 2011 Capital Gains 25% rate [Member] Preferred Stock [Member]	Dec. 31, 2013 Return of Captial [Member] Common Stock [Member]	Dec. 31, 2012 Return of Captial [Member] Common Stock [Member]	Dec. 31, 2011 Return of Captial [Member] Common Stock [Member]
Shareholders Equity [Line Items]
Dividends declared		$ 0.98	$ 0.83	$ 0.84	$ 0.00	$ 14.53	$ 19.38	$ 18.44	$ 18.44	$ 18.44	$ 16.56	$ 3.91	$ 0.00
Allocations		100.00%	100.00%	100.00%										100.00%	100.00%	100.00%	100.00%	100.00%	100.00%	100.00%	100.00%	100.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
Number of quarterly dividend payments	3