Long-Term Incentive Plan (Cash Flow Effects Of LTIP Settlements) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Share-based Payment Arrangement [Abstract] | |||
| Partners' Capital Account, Units, Unit-based Compensation (in shares) | 199,792 | 168,913 | 216,679 |
| Settlement of tax withholdings on long-term incentive compensation | $ 9,764 | $ 9,285 | $ 13,875 |
| Payments for Other Taxes | 900 | 1,100 | 1,200 |
| Total Cash Taxes Paid (in millions) | $ 10,700 | $ 10,400 | $ 15,100 |