| Component: (Network and Table) | |
|---|---|
| Network | 2410402 - Disclosure - Asset Retirement Obligations (ARO) (Details) (http://www.murphyusa.com/role/AssetRetirementObligationsAroDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001573516 (http://www.sec.gov/CIK) |
| Asset Retirement Obligation Disclosure [Abstract] | Period [Axis] | ||
|---|---|---|---|
2016-01-01 - 2016-12-31 | 2015-01-01 - 2015-12-31 | 2014-01-01 - 2014-12-31 | |
Asset Retirement Obligation Disclosure [Abstract] | |||
Asset Retirement Obligation Roll Forward | |||
Balance at beginning of period | |||
Accretion expense | 1,650,000 | 1,521,000 | 1,200,000 |
Settlements of liabilities | ( | ||
Liabilities incurred | |||
Balance at end of period | 24,345,000 | 22,245,000 | |