S000071703 [Member] Annual Total Returns |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| BATS: Short Term Municipal Income Series | BATS: Short Term Municipal Income Series | ||||
| Prospectus [Line Items] | ||||
| Annual Return [Percent] | 2.79% | 3.37% | 3.35% | 1.05% |