S000010030 [Member] Annual Fund Operating Expenses - The Bond Fund - Shares |
Oct. 31, 2025 |
|||
|---|---|---|---|---|
| Prospectus [Line Items] | ||||
| Management Fees (as a percentage of Assets) | 0.13% | [1] | ||
| Other Expenses (as a percentage of Assets): | 0.28% | |||
| Expenses (as a percentage of Assets) | 0.41% | |||
| ||||