Average Annual Total Returns - FidelityIntermediateLong-TermandShort-TermTreasuryBondIndexFunds-ComboPRO - FidelityIntermediateLong-TermandShort-TermTreasuryBondIndexFunds-ComboPRO - Fidelity Intermediate Treasury Bond Index Fund |
Apr. 29, 2025 |
|---|---|
| Fidelity Intermediate Treasury Bond Index Fund | Return Before Taxes | |
| Average Annual Return: | |
| Past 1 year | 0.40% |
| Past 5 years | (0.71%) |
| Past 10 years | 0.96% |
| Fidelity Intermediate Treasury Bond Index Fund | After Taxes on Distributions | |
| Average Annual Return: | |
| Past 1 year | (0.88%) |
| Past 5 years | (1.62%) |
| Past 10 years | 0.02% |
| Fidelity Intermediate Treasury Bond Index Fund | After Taxes on Distributions and Sales | |
| Average Annual Return: | |
| Past 1 year | 0.39% |
| Past 5 years | (0.84%) |
| Past 10 years | 0.39% |
| LB143 | |
| Average Annual Return: | |
| Past 1 year | 0.22% |
| Past 5 years | (0.70%) |
| Past 10 years | 1.01% |
| LB001 | |
| Average Annual Return: | |
| Past 1 year | 1.25% |
| Past 5 years | (0.33%) |
| Past 10 years | 1.35% |