| Component: (Network and Table) | |
|---|---|
| Network | 2407404 - Disclosure - Notes Payable (Schedule of Maturities of Debt) (Details) (http://www.mercuryinsurance.com/role/NotesPayableScheduleOfMaturitiesOfDebtDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0000064996 (http://www.sec.gov/CIK) |
| Notes Payable [Abstract] | Period [Axis] |
|---|---|
2016-12-31 | |
Notes Payable [Abstract] | |
2017 | |
2018 | |
2019 |