Equity And Accumulated Other Comprehensive Loss, Net (6.625% Series F Cumulative Convertible Preferred Stock Narrative) (Details) (Series F Cumulative Convertible Preferred Units [Member], USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Preferred stock, issued	7,300,000	7,300,000
Preferred stock, dividend rate	6.625%	6.625%
Preferred stock dividend per share amount	$ 1.656	$ 1.656
Preferred stock, liquidation preference per share/unit	$ 25	$ 25
April 5, 2012 [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance date	Apr. 05, 2012
April 18, 2012 [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance date	Apr. 18, 2012
April 5, 2012 and April 18, 2012 [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Preferred stock, issued	7,300,000
Preferred stock, dividend rate	6.625%
Gross proceeds from issuance of redeemable preferred stock	$ 176.2
Preferred stock dividend per share amount	$ 1.65625
Preferred stock, liquidation preference per share/unit	$ 25.00
Preferred stock, distribution payable date	Jun. 29, 2012
Preferred stock, dividends in arrears	$ 0.395660
Preferred stock, redemption date	Apr. 05, 2017
Preferred stock, redemption price per share	$ 25.00
Shares issued upon conversion	0.6843