Quarterly report pursuant to Section 13 or 15(d)

Noncontrolling Interests In Subsidiaries (Schedule Of Activity Of Noncontrolling Interests) (Details)

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Noncontrolling Interests In Subsidiaries (Schedule Of Activity Of Noncontrolling Interests) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Noncontrolling Interest [Line Items]        
Balance, value     $ 1,918,455  
Net income 2,085 3,439 41,804 42,712
Common unit distributions     (6,793)  
Increase in noncontrolling interest in consolidated joint ventures     487  
Balance, value 1,904,283   1,904,283  
Noncontrolling Interests In Subsidiaries [Member]
       
Noncontrolling Interest [Line Items]        
Balance, value     276,096 301,533
Net income     3,997 3,442
Common unit distributions     (6,793) (12,634)
Increase in noncontrolling interest in consolidated joint ventures     487 1,570
Redemption of common units for common stock     (14,211) (3,086)
Rebalancing of ownership percentage between parent and subsidiaries     257 (493)
Balance, value $ 259,833 $ 290,332 $ 259,833 $ 290,332