Concentration of Investments (Details) - EBP 005 - USD ($) |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Fidelity Growth Company Commingled Pool | ||
| EBP, Risk and Uncertainty [Line Items] | ||
| Total assets | $ 326,726,877 | $ 276,398,764 |
| Percent of total investments | 14.00% | 14.00% |
| Fidelity Total Market Index Fund | ||
| EBP, Risk and Uncertainty [Line Items] | ||
| Total assets | $ 0 | $ 216,193,691 |
| Percent of total investments | 0.00% | 11.00% |
| Spartan Total Market Index Pool | ||
| EBP, Risk and Uncertainty [Line Items] | ||
| Total assets | $ 234,783,134 | $ 0 |
| Percent of total investments | 10.00% | 0.00% |
| NiSource Stock Fund | ||
| EBP, Risk and Uncertainty [Line Items] | ||
| Total assets | $ 240,386,845 | $ 223,369,418 |
| Percent of total investments | 10.00% | 11.00% |