S000049701 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 7.30% | (0.36%) | 2.01% |
| Bridge Builder Core Plus Bond Fund | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 8.95% | 0.66% | 2.95% |
| Bridge Builder Core Plus Bond Fund | After Taxes on Distributions | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 6.83% | (0.94%) | 1.35% |
| Bridge Builder Core Plus Bond Fund | After Taxes on Distributions and Sales | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 5.56% | (0.18%) | 1.59% |