Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity (Schedule Of Preferred Stock Outstanding) (Details)

v3.19.3
Shareholders' Equity (Schedule Of Preferred Stock Outstanding) (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Dec. 31, 2018
Class of Stock [Line Items]      
Shares Outstanding 38,390 38,390 38,390
Shares Amount $ 959,750   $ 959,750
Series U Preferred Stock [Member]      
Class of Stock [Line Items]      
Issuance Date Sep. 01, 2012    
Earliest Potential Redemption Date Sep. 01, 2017    
Dividend Rate 5.75%    
Shares Outstanding 9,200   9,200
Shares Amount $ 230,000   $ 230,000
Series V Preferred Stock [Member]      
Class of Stock [Line Items]      
Issuance Date Mar. 01, 2013    
Earliest Potential Redemption Date Mar. 01, 2018    
Dividend Rate 5.70%    
Shares Outstanding 4,400   4,400
Shares Amount $ 110,000   $ 110,000
Series W Preferred Stock [Member]      
Class of Stock [Line Items]      
Issuance Date Oct. 01, 2016    
Earliest Potential Redemption Date Oct. 01, 2021    
Dividend Rate 5.20%    
Shares Outstanding 7,590   7,590
Shares Amount $ 189,750   $ 189,750
Series X Preferred Stock [Member]      
Class of Stock [Line Items]      
Issuance Date Sep. 01, 2017    
Earliest Potential Redemption Date Sep. 01, 2022    
Dividend Rate 5.25%    
Shares Outstanding 9,200   9,200
Shares Amount $ 230,000   $ 230,000
Series Y Preferred Stock [Member]      
Class of Stock [Line Items]      
Issuance Date Dec. 01, 2017    
Earliest Potential Redemption Date Dec. 01, 2022    
Dividend Rate 5.20%    
Shares Outstanding 8,000   8,000
Shares Amount $ 200,000   $ 200,000