N-4 |
Jul. 31, 2025 |
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| Prospectus: | |||||||||
| Document Type | N-4 | ||||||||
| Entity Registrant Name | JEFFERSON NATIONAL LIFE ANNUITY ACCOUNT G | ||||||||
| Entity Central Index Key | 0001005336 | ||||||||
| Entity Investment Company Type | N-4 | ||||||||
| Document Period End Date | Jul. 31, 2025 | ||||||||
| Amendment Flag | false | ||||||||
| Monument Advisor Contract No. JNL-2300 | |||||||||
| Prospectus: | |||||||||
| Item 17. Portfolio Companies (N-4) [Text Block] | The following underlying mutual fund is offered as an investment option under the contract. Effective August 22, 2025, the name of the investment option is updated as indicated below:
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| Monument Advisor Contract No. JNL-2300 | InvescoVIInternationalGrowthFundSeriesIIMember | |||||||||
| Prospectus: | |||||||||
| Portfolio Company Name [Text Block] | Invesco V.I. International Growth Fund: Series II | ||||||||
| Monument Advisor Contract No. JNL-2300 | NationwideVariableInsuranceTrustNVITJPMorganEquityandOptionsTotalReturnFundClassIMember | |||||||||
| Prospectus: | |||||||||
| Portfolio Company Name [Text Block] | Nationwide Variable Insurance Trust - NVIT J.P. Morgan Equity and Options Total Return Fund: Class I | ||||||||
| Monument Advisor Select | |||||||||
| Prospectus: | |||||||||
| Item 17. Portfolio Companies (N-4) [Text Block] | The following underlying mutual fund is offered as an investment option under the contract. Effective August 22, 2025, the name of the investment option is updated as indicated below:
|
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| Monument Advisor Select | InvescoVIInternationalGrowthFundSeriesIIMember | |||||||||
| Prospectus: | |||||||||
| Portfolio Company Name [Text Block] | Invesco V.I. International Growth Fund: Series II | ||||||||
| Monument Advisor Select | NationwideVariableInsuranceTrustNVITJPMorganEquityandOptionsTotalReturnFundClassIMember | |||||||||
| Prospectus: | |||||||||
| Portfolio Company Name [Text Block] | Nationwide Variable Insurance Trust - NVIT J.P. Morgan Equity and Options Total Return Fund: Class I |