Partners' Capital and Distributions (Schedule Of Distributions) (Details) - USD ($) $ / shares in Units, $ in Thousands |
6 Months Ended | 9 Months Ended | 12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Aug. 14, 2020 |
May 15, 2020 |
Feb. 14, 2020 |
Nov. 14, 2019 |
Aug. 14, 2019 |
May 15, 2019 |
Feb. 14, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
Sep. 30, 2020 |
Dec. 31, 2019 |
|
| Distribution Made to Limited Partner [Line Items] | |||||||||||
| Cash distribution per unit (in dollars per share) | $ 1.0275 | $ 1.0275 | $ 1.0200 | $ 1.0125 | $ 1.0050 | $ 0.9975 | $ 2.0550 | $ 2.0025 | $ 4.0350 | ||
| Total Cash Distribution to Limited Partners | $ 231,245 | $ 234,774 | $ 232,971 | $ 231,258 | $ 229,545 | $ 227,832 | $ 466,019 | $ 457,377 | $ 921,606 | ||
| Scenario, Forecast | |||||||||||
| Distribution Made to Limited Partner [Line Items] | |||||||||||
| Cash distribution per unit (in dollars per share) | $ 1.0275 | $ 3.0825 | |||||||||
| Total Cash Distribution to Limited Partners | $ 231,245 | $ 697,264 | |||||||||