Derivatives - Open Commodity Derivative Contracts - Refined Products (Detail) - Refined products - Exchange Traded gal in Thousands |
3 Months Ended | |||
|---|---|---|---|---|
|
Mar. 31, 2018
gal
| ||||
| Derivative [Line Items] | ||||
| Percentage of derivative contracts expiring in the period | 100.00% | |||
| Derivative contract expiration date | Jun. 30, 2017 | |||
| Long | ||||
| Derivative [Line Items] | ||||
| Notional contracts (in thousands of Total Gallons) | 159,390 | [1] | ||
| Short | ||||
| Derivative [Line Items] | ||||
| Notional contracts (in thousands of Total Gallons) | 147,252 | [1] | ||
| ||||