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Related Party Transactions Big Spring Agreements (Details)	12 Months Ended
	Dec. 31, 2018 $ / bbl
Big Spring Asphalt Services Agreement
Related Party Transaction [Line Items]
Term of agreement (years)	10 years
One-time option to extend, maximum number of years	5 years
Big Spring Marketing Agreement
Related Party Transaction [Line Items]
Term of agreement (years)	10 years
One-time option to extend, maximum number of years	5 years
Crude Oil Pipeline | Big Spring Pipeline, Storage And Throughput Facilities Agreement
Related Party Transaction [Line Items]
Term of agreement (years)	10 years
One-time option to extend, maximum number of years	5 years
Storage | Big Spring Asphalt Services Agreement
Related Party Transaction [Line Items]
Throughput commitment tariff rate (dollars per barrel)	8.30
Minimum | Crude Oil Pipeline | Big Spring Pipeline, Storage And Throughput Facilities Agreement
Related Party Transaction [Line Items]
Throughput commitment tariff rate (dollars per barrel)	0.05
Minimum | Crude Oil Pipeline | Big Spring Marketing Agreement
Related Party Transaction [Line Items]
Throughput commitment tariff rate (dollars per barrel)	0.50
Maximum | Crude Oil Pipeline | Big Spring Pipeline, Storage And Throughput Facilities Agreement
Related Party Transaction [Line Items]
Throughput commitment tariff rate (dollars per barrel)	0.66
Maximum | Crude Oil Pipeline | Big Spring Marketing Agreement
Related Party Transaction [Line Items]
Throughput commitment tariff rate (dollars per barrel)	0.71

X

- Definition

The term of the agreement. Agreement could be a lease, debt, arrangement, services agreement or other arrangement.

+ References

No definition available.

+ Details

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- Definition

Term Of Agreement, One-Time Option To Extend, Maximum Number Of Years

+ References

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- Definition

Throughput Commitment Tariff Rate

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Details

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- Details

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- Details

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- Details

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