Expense Example, No Redemption - Gateway Trust - Classes A, C, N, and Y - C |
Dec. 31, 2025
USD ($)
|
|---|---|
| Gateway Equity Call Premium Fund | |
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | $ 171 |
| Expense Example, No Redemption, 3 Years | 555 |
| Expense Example, No Redemption, 5 Years | 964 |
| Expense Example, No Redemption, 10 Years | 1,909 |
| Gateway Fund | |
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | 173 |
| Expense Example, No Redemption, 3 Years | 542 |
| Expense Example, No Redemption, 5 Years | 936 |
| Expense Example, No Redemption, 10 Years | $ 1,837 |