ORGANIZATION AND OPERATIONS Narrative 3 - Senior Notes (Details) - USD ($) $ in Thousands |
12 Months Ended | ||||
|---|---|---|---|---|---|
Sep. 14, 2020 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Aug. 31, 2020 |
|
| Debt Instrument [Line Items] | |||||
| Proceeds from note offerings, net of issuance costs | $ 1,182,000 | $ 1,182,035 | $ 491,580 | $ 0 | |
| 5.75% senior notes | |||||
| Debt Instrument [Line Items] | |||||
| Long-term debt | $ 600,000 | 600,000 | 0 | ||
| Long-term debt, rate | 5.75% | ||||
| 6.375% senior notes | |||||
| Debt Instrument [Line Items] | |||||
| Long-term debt | $ 600,000 | 600,000 | 0 | ||
| Long-term debt, rate | 6.375% | ||||
| 4.80% senior notes | |||||
| Debt Instrument [Line Items] | |||||
| Long-term debt | $ 0 | $ 450,000 | $ 450,000 | ||
| Long-term debt, rate | 4.80% | ||||
| Logistics Notes due 2025 and Logistics Notes due 2030 | |||||
| Debt Instrument [Line Items] | |||||
| Long-term debt, issuance costs | $ 18,000 | ||||