Fees and Expenses |
Dec. 31, 2024 |
|---|---|
| NVIT Fidelity Institutional AM Emerging Markets Fund | |
| Prospectus [Line Items] | |
| Operating Expenses Caption [Optional Text] | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) |
| NVIT Putnam International Value Fund | |
| Prospectus [Line Items] | |
| Expenses Restated to Reflect Current [Text] | “Management Fees” has been restated to reflect the reduction of contractual investment advisory fees as of February 3, 2025. |
| Operating Expenses Caption [Optional Text] | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) |