Shareholder Report, Average Annual Return (Details) |
6 Months Ended | 12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2026 |
Jun. 30, 2026 |
Jun. 30, 2026 |
|
| C000009558 [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Davis Financial Portfolio | |||
| Average Annual Return, Percent | 13.72% | 12.99% | 13.38% | |
| Standard & Poor's 500 Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | S&P 500 Index | |||
| Average Annual Return, Percent | 22.32% | 13.40% | 15.50% | |
| S And P 500 Financials Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | S&P 500 Financials Index | |||
| Average Annual Return, Percent | 4.05% | 9.85% | 13.39% |