S000033768 [Member] Expense Example, No Redemption - Nuveen Real Asset Income Fund |
Dec. 31, 2025
USD ($)
|
|---|---|
| Class A | |
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | $ 686 |
| Expense Example, No Redemption, 3 Years | 923 |
| Expense Example, No Redemption, 5 Years | 1,180 |
| Expense Example, No Redemption, 10 Years | 1,912 |
| Class C | |
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | 194 |
| Expense Example, No Redemption, 3 Years | 601 |
| Expense Example, No Redemption, 5 Years | 1,035 |
| Expense Example, No Redemption, 10 Years | 2,241 |
| Class I | |
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | 93 |
| Expense Example, No Redemption, 3 Years | 291 |
| Expense Example, No Redemption, 5 Years | 507 |
| Expense Example, No Redemption, 10 Years | 1,129 |
| Class R6 | |
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | 83 |
| Expense Example, No Redemption, 3 Years | 259 |
| Expense Example, No Redemption, 5 Years | 453 |
| Expense Example, No Redemption, 10 Years | $ 1,011 |