S000061500 [Member] Expense Example, No Redemption - Nuveen Global Real Estate Securities Fund |
Dec. 31, 2025
USD ($)
|
|---|---|
| Class A | |
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | $ 700 |
| Expense Example, No Redemption, 3 Years | 1,009 |
| Expense Example, No Redemption, 5 Years | 1,417 |
| Expense Example, No Redemption, 10 Years | 2,553 |
| Class C | |
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | 208 |
| Expense Example, No Redemption, 3 Years | 690 |
| Expense Example, No Redemption, 5 Years | 1,277 |
| Expense Example, No Redemption, 10 Years | 2,871 |
| Class R6 | |
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | 95 |
| Expense Example, No Redemption, 3 Years | 345 |
| Expense Example, No Redemption, 5 Years | 698 |
| Expense Example, No Redemption, 10 Years | 1,695 |
| Class I | |
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | 107 |
| Expense Example, No Redemption, 3 Years | 383 |
| Expense Example, No Redemption, 5 Years | 762 |
| Expense Example, No Redemption, 10 Years | $ 1,828 |