Equity And Accumulated Other Comprehensive Loss, Net (Schedule Of Dividends) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended																																																																0 Months Ended	12 Months Ended
	Dec. 31, 2013 Installment 1 FY2011 [Member]	Dec. 31, 2013 Installment 2 FY2011 [Member]	Dec. 31, 2013 Installment 3 FY2011 [Member]	Dec. 31, 2013 Installment 4 FY2011 [Member]	Dec. 31, 2013 Installment 1 FY2012 [Member]	Dec. 31, 2013 Installment 2 FY2012 [Member]	Dec. 31, 2013 Installment 3 FY2012 [Member]	Dec. 31, 2013 Installment 4 FY2012 [Member]	Dec. 31, 2013 Installment 1 FY2013 [Member]	Dec. 31, 2013 Installment 2 FY2013 [Member]	Dec. 31, 2013 Installment 3 FY2013 [Member]	Dec. 31, 2013 Installment 4 FY2013 [Member]	Dec. 31, 2012 Series C Cumulative Convertible Preferred Units [Member]		Dec. 31, 2011 Series C Cumulative Convertible Preferred Units [Member]		Dec. 31, 2011 Series C Cumulative Convertible Preferred Units [Member] Installment 1 FY2011 [Member]		Dec. 31, 2011 Series C Cumulative Convertible Preferred Units [Member] Installment 2 FY2011 [Member]		Dec. 31, 2011 Series C Cumulative Convertible Preferred Units [Member] Installment 3 FY2011 [Member]		Dec. 31, 2011 Series C Cumulative Convertible Preferred Units [Member] Installment 4 FY2011 [Member]		Dec. 31, 2012 Series C Cumulative Convertible Preferred Units [Member] Installment 1 FY2012 [Member]		Dec. 31, 2013 Series D Cumulative Convertible Preferred Units [Member]	Dec. 31, 2012 Series D Cumulative Convertible Preferred Units [Member]		Dec. 31, 2011 Series D Cumulative Convertible Preferred Units [Member]		Dec. 31, 2011 Series D Cumulative Convertible Preferred Units [Member] Installment 1 FY2011 [Member]		Dec. 31, 2011 Series D Cumulative Convertible Preferred Units [Member] Installment 2 FY2011 [Member]		Dec. 31, 2011 Series D Cumulative Convertible Preferred Units [Member] Installment 3 FY2011 [Member]		Dec. 31, 2011 Series D Cumulative Convertible Preferred Units [Member] Installment 4 FY2011 [Member]		Dec. 31, 2012 Series D Cumulative Convertible Preferred Units [Member] Installment 1 FY2012 [Member]		Dec. 31, 2012 Series D Cumulative Convertible Preferred Units [Member] Installment 2 FY2012 [Member]		Dec. 31, 2012 Series D Cumulative Convertible Preferred Units [Member] Installment 3 FY2012 [Member]		Dec. 31, 2012 Series D Cumulative Convertible Preferred Units [Member] Installment 4 FY2012 [Member]		Dec. 31, 2013 Series E Cumulative Convertible Preferred Units [Member]		Dec. 31, 2012 Series E Cumulative Convertible Preferred Units [Member]		Dec. 31, 2011 Series E Cumulative Convertible Preferred Units [Member]		Dec. 31, 2011 Series E Cumulative Convertible Preferred Units [Member] Installment 4 FY2011 [Member]		Dec. 31, 2012 Series E Cumulative Convertible Preferred Units [Member] Installment 1 FY2012 [Member]		Dec. 31, 2012 Series E Cumulative Convertible Preferred Units [Member] Installment 2 FY2012 [Member]		Dec. 31, 2012 Series E Cumulative Convertible Preferred Units [Member] Installment 3 FY2012 [Member]		Dec. 31, 2012 Series E Cumulative Convertible Preferred Units [Member] Installment 4 FY2012 [Member]		Dec. 31, 2013 Series E Cumulative Convertible Preferred Units [Member] Installment 1 FY2013 [Member]		Dec. 31, 2013 Series E Cumulative Convertible Preferred Units [Member] Installment 2 FY2013 [Member]		Dec. 31, 2013 Series E Cumulative Convertible Preferred Units [Member] Installment 3 FY2013 [Member]		Dec. 31, 2013 Series E Cumulative Convertible Preferred Units [Member] Installment 4 FY2013 [Member]		Dec. 31, 2013 Series F Cumulative Convertible Preferred Units [Member]		Dec. 31, 2012 Series F Cumulative Convertible Preferred Units [Member]		Dec. 31, 2012 Series F Cumulative Convertible Preferred Units [Member] Installment 2 FY2012 [Member]		Dec. 31, 2012 Series F Cumulative Convertible Preferred Units [Member] Installment 3 FY2012 [Member]		Dec. 31, 2012 Series F Cumulative Convertible Preferred Units [Member] Installment 4 FY2012 [Member]		Dec. 31, 2013 Series F Cumulative Convertible Preferred Units [Member] Installment 1 FY2013 [Member]		Dec. 31, 2013 Series F Cumulative Convertible Preferred Units [Member] Installment 2 FY2013 [Member]		Dec. 31, 2013 Series F Cumulative Convertible Preferred Units [Member] Installment 3 FY2013 [Member]		Dec. 31, 2013 Series F Cumulative Convertible Preferred Units [Member] Installment 4 FY2013 [Member]		Jun. 28, 2013 Series G Cumulative Convertible Preferred Units [Member]	Dec. 31, 2013 Series G Cumulative Convertible Preferred Units [Member]		Dec. 31, 2012 Series G Cumulative Convertible Preferred Units [Member]	Dec. 31, 2013 Series G Cumulative Convertible Preferred Units [Member] Installment 2 FY2013 [Member]		Dec. 31, 2013 Series G Cumulative Convertible Preferred Units [Member] Installment 3 FY2013 [Member]		Dec. 31, 2013 Series G Cumulative Convertible Preferred Units [Member] Installment 4 FY2013 [Member]		Dec. 31, 2013 Common Stock [Member]	Dec. 31, 2012 Common Stock [Member]	Dec. 31, 2011 Common Stock [Member]	Dec. 31, 2011 Common Stock [Member] Installment 1 FY2011 [Member]		Dec. 31, 2011 Common Stock [Member] Installment 2 FY2011 [Member]		Dec. 31, 2011 Common Stock [Member] Installment 3 FY2011 [Member]		Dec. 31, 2011 Common Stock [Member] Installment 4 FY2011 [Member]		Dec. 31, 2012 Common Stock [Member] Installment 1 FY2012 [Member]		Dec. 31, 2012 Common Stock [Member] Installment 2 FY2012 [Member]		Dec. 31, 2012 Common Stock [Member] Installment 3 FY2012 [Member]		Dec. 31, 2012 Common Stock [Member] Installment 4 FY2012 [Member]		Dec. 31, 2013 Common Stock [Member] Installment 1 FY2013 [Member]		Dec. 31, 2013 Common Stock [Member] Installment 2 FY2013 [Member]		Dec. 31, 2013 Common Stock [Member] Installment 3 FY2013 [Member]		Dec. 31, 2013 Common Stock [Member] Installment 4 FY2013 [Member]
Dividends Payable [Line Items]
Date dividend/distribution declared	Feb. 10, 2011	Apr. 25, 2011	Jul. 25, 2011	Oct. 24, 2011	Feb. 14, 2012	Apr. 23, 2012	Jul. 19, 2012	Oct. 30, 2012	Feb. 12, 2013	May 01, 2013	Jul. 23, 2013	Oct. 23, 2013
Dividend/Distribution payable date	Mar. 31, 2011	Jun. 30, 2011	Sep. 30, 2011	Dec. 30, 2011	Mar. 30, 2012	Jun. 29, 2012	Sep. 28, 2012	Dec. 31, 2012	Mar. 29, 2013	Jun. 28, 2013	Sep. 30, 2013	Dec. 31, 2013
Dividends/Distributions, preferred stock/units													$ 1,402	[1]	$ 6,077	[1]	$ 1,832	[1]	$ 1,441	[1]	$ 1,402	[1]	$ 1,402	[1]	$ 1,402	[1]		$ 8,212	[2]	$ 13,394	[2]	$ 4,690	[2]	$ 3,272	[2]	$ 3,034	[2]	$ 2,398	[2]	$ 2,398	[2]	$ 2,394	[2]	$ 1,723	[2]	$ 1,697	[2]	$ 20,124	[3]	$ 20,124	[3]	$ 5,926	[3]	$ 5,926	[3],[4]	$ 5,031	[3]	$ 5,031	[3]	$ 5,031	[3]	$ 5,031	[3]	$ 5,031	[3]	$ 5,031	[3]	$ 5,031	[3]	$ 5,031	[3]	$ 12,092	[5]	$ 8,934	[5]	$ 2,888	[5],[6]	$ 3,023	[5]	$ 3,023	[5]	$ 3,023	[5]	$ 3,023	[5]	$ 3,023	[5]	$ 3,023	[5]		$ 10,689	[7]		$ 3,345	[7],[8]	$ 3,672	[7]	$ 3,672	[7]
Dividends/Distributions, common stock/units																																																																																																				$ 400,701	$ 339,074	$ 271,412	$ 62,459	[9]	$ 67,031	[9]	$ 69,830	[9]	$ 72,092	[9]	$ 78,335	[10]	$ 80,478	[10]	$ 89,679	[10]	$ 90,582	[10]	$ 100,165	[11]	$ 100,169	[11]	$ 100,180	[11]	$ 100,187	[11]
Preferred stock dividend per share amount													$ 1.094		$ 1.094												$ 1.375	$ 1.375		$ 1.375																		$ 1.750		$ 1.750		$ 1.750																				$ 1.656		$ 1.656																$ 0.334550	$ 1.46875
Common stock dividend per share amount																																																																																																				$ 3.120	$ 2.920	$ 2.720
Preferred stock, dividend rate													4.375%														5.50%	5.50%																				7.00%		7.00%																						6.625%		6.625%																	5.875%		5.875%
Shares issued upon conversion													0.5480														0.6360																					0.8378																																											0.7532
Preferred stock, redemption price per share																																																$ 25.00																																											$ 25.00

[1] $1.094 annual rate of dividend per share.

[2] $1.375 annual rate of dividend per share.

[3] $1.750 annual rate of dividend per share.

[4] Represents a pro rata dividend from and including the original issue date to and including December 31, 2011.

[5] $1.656 annual rate of dividend per share.

[6] Represents a pro rata dividend from and including the original issue date to and including June 30, 2012.

[7] $1.469 annual rate of dividend per share.

[8] Represents a pro rata dividend from and including the original issue date to and including June 30, 2013.

[9] $2.720 annual rate of dividend per share.

[10] $2.920 annual rate of dividend per share.

[11] $3.120 annual rate of dividend per share.