v3.21.2

SERIES D CUMULATIVE CONVERTIBLE PREFERRED UNITS Narrative (Details) - Series D Preferred Limited Partner [Member] - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2021 | Sep. 30, 2021
Class of Stock [Line Items] |  |
Required amount of per unit cash dividends to permit dividend paid in kind |  | $ 0.635
Preferred Stock, Distributions, Period - June 29, 2018 to June 28, 2020 [Member] |  |
Class of Stock [Line Items] |  |
Preferred units distribution percentage, per annum |  | 9.75%
Preferred units, distribution rate, per annum |  | $ 57.6
Preferred stock, dividend amount, per unit, per distribution period |  | $ 0.619
Preferred Stock, Distributions, Period - June 29, 2020 to June 28, 2023 [Member] |  |
Class of Stock [Line Items] |  |
Preferred units distribution percentage, per annum |  | 10.75%
Preferred units, distribution rate, per annum |  | $ 63.4
Preferred stock, dividend amount, per unit, per distribution period |  | $ 0.682
Preferred Stock, Distributions, Period - June 29, 2023 and thereafter [Member] |  |
Class of Stock [Line Items] |  |
Preferred units, dividend payment rate, variable |  | the greater of 13.75%, or $81.1 million, per annum ($0.872 per unit per distribution period) or the distribution per common unit thereafter
Preferred Stock, Distributions, Period - June 29, 2023 and thereafter [Member] | Minimum [Member] |  |
Class of Stock [Line Items] |  |
Preferred units distribution percentage, per annum |  | 13.75%
Preferred units, distribution rate, per annum |  | $ 81.1
Preferred stock, dividend amount, per unit, per distribution period |  | $ 0.872
Subsequent Event [Member] |  |
Class of Stock [Line Items] |  |
Preferred unit distribution | $ 0.682 |

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