| Component: (Network and Table) | |
|---|---|
| Network | 2410402 - Disclosure - Inventories (Details) (http://www.marathonoil.com/role/InventoriesDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0000101778 (http://www.sec.gov/CIK) |
| Inventory Disclosure [Abstract] | Period [Axis] | |
|---|---|---|
2016-12-31 | 2015-12-31 | |
Inventory Disclosure [Abstract] | ||
Liquid hydrocarbons, natural gas and bitumen | ||
Supplies and sundry items | ||
Inventories at cost | 227,000,000 | 313,000,000 |