Equity Equity, Narrative (Details) - shares |
6 Months Ended | 9 Months Ended | |
|---|---|---|---|
Jun. 30, 2019 |
Sep. 30, 2018 |
Dec. 31, 2018 |
|
| Limited Partners' Capital Account, Units Outstanding | 245,630,444 | 245,000,000 | 245,493,184 |
| Preferred Units, Outstanding | 600,000 | 600,000 | |
| Preferred Stock, Dividend Rate, Percentage | 6.875% | ||
| Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage | 64.00% | 64.00% | |
| Limited Partner Units, Public | |||
| Limited Partners' Capital Account, Units Outstanding | 89,457,316 | ||
| Limited Partner Units, Affiliate | |||
| Limited Partners' Capital Account, Units Outstanding | 156,173,128 | 156,000,000 | |
| TexNew Mex Units | |||
| Limited Partners' Capital Account, Units Outstanding | 80,000 |