v3.19.3
Partners' Capital and Distributions (Schedule Of Distributions) (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended 12 Months Ended
Nov. 14, 2019
Aug. 14, 2019
May 15, 2019
Feb. 14, 2019
Nov. 14, 2018
Aug. 14, 2018
May 15, 2018
Feb. 14, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2019
Dec. 31, 2018
Distribution Made to Limited Partner [Line Items]                        
Cash distribution per unit (in dollars per share)   $ 1.0125 $ 1.0050 $ 0.9975 $ 0.9775 $ 0.9575 $ 0.9375 $ 0.9200 $ 3.0150 $ 2.8150   $ 3.7925
Total Cash Distribution to Limited Partners   $ 231,258 $ 229,545 $ 227,832 $ 223,061 $ 218,497 $ 213,933 $ 209,940 $ 688,635 $ 642,370   $ 865,431
Scenario, Forecast                        
Distribution Made to Limited Partner [Line Items]                        
Cash distribution per unit (in dollars per share) $ 1.02                   $ 4.0350  
Total Cash Distribution to Limited Partners $ 232,971                   $ 921,606