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Significant Accounting Policies (Details) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jan. 01, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Feb. 28, 2021 JointVenture | Dec. 31, 2017 USD ($)
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |  |  |
Commodity-based inventory |  | $ 178,900,000 | $ 156,500,000 |  |  |
Interest expense, net |  | (391,300,000) | (337,800,000) | $ (185,800,000) |  |
Decrease in estimated redemption value included in interest (income) expense, net |  |  |  | 72,100,000 |  |
Income attributable to mandatorily redeemable preferred interests |  | 4,900,000 |  | 4,100,000 |  |
Series A Preferred Stock [Member] |  |  |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |  |  |
Carrying value |  | $ 301,400,000 | 278,800,000 |  |  | $ 216,500,000
Subsequent Event [Member] | New Accounting Pronouncement Early Adoption Effect [Member] | Series A Preferred Stock [Member] | ASU 2020-06 [Member] |  |  |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |  |  |
Carrying value | $ 742,900,000 |  |  |  |  |
Preferred stock, net proceeds at issuance | $ 787,100,000 |  |  |  |  |
Minimum [Member] |  |  |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |  |  |
Payment of commodities due period |  | 10 days |  |  |  |
Maximum [Member] |  |  |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |  |  |
Payment of commodities due period |  | 30 days |  |  |  |
Mandatorily Redeemable Preferred Interests [Member] |  |  |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |  |  |
Estimated redemption value |  | $ 0 | 0 |  |  |
Mandatorily Redeemable Preferred Interests [Member] | West OK [Member] |  |  |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |  |  |
Ownership interest |  |  |  |  | 100.00% |
Mandatorily Redeemable Preferred Interests [Member] | West TX [Member] |  |  |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |  |  |
Ownership interest |  |  |  |  | 72.80% |
Mandatorily Redeemable Preferred Interests [Member] | Joint Ventures [Member] |  |  |  |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |  |  |  |
Number of joint ventures | JointVenture |  |  |  |  | 2 |
Notes receivable, face amount |  | $ 1,900,000,000 |  |  |  |
Notes receivable, due date |  | Jul. 31, 2042 |  |  |  |
Interest expense, net |  | $ 9,100,000 | $ 10,200,000 | $ 9,700,000 |  |

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