Revenue Recognition - Revenue Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue, performance obligation, description of timing									Payment is typically due in full within 30 days of the invoice date.
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									$ 987,434	$ 1,618,584	$ 1,636,773
Other									34,988	192,663	113,440
Total revenues	$ 249,755	$ 266,904	$ 152,286	$ 353,477	$ 431,339	$ 450,307	$ 484,433	$ 445,168	1,022,422	1,811,247	1,750,213
Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									915,438	1,555,393	1,580,997
Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									71,996	63,191	55,776
Revenues from contracts with customers
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									987,434	1,618,584	1,636,773
Marketing
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									915,438	1,555,393	1,580,997
Other									34,988	192,663	113,440
Total revenues									950,426	1,748,056	1,694,437
Marketing | Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									915,438	1,555,393	1,580,997
Marketing | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									0	0	0
Marketing | Revenues from contracts with customers
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									915,438	1,555,393	1,580,997
Transportation
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									71,724	63,191	55,776
Other									0	0	0
Total revenues									71,724	63,191	55,776
Transportation | Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									0	0	0
Transportation | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									71,724	63,191	55,776
Transportation | Revenues from contracts with customers
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									71,724	63,191	55,776
Pipeline and storage
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									272	0	0
Other									0	0	0
Total revenues									272	0	0
Pipeline and storage | Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									0	0	0
Pipeline and storage | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									272	0	0
Pipeline and storage | Revenues from contracts with customers
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers									$ 272	$ 0	$ 0