S000055646 [Member] Performance Management - Nuveen Short-Term REIT ETF |
Dec. 31, 2025 |
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| Prospectus [Line Items] | |
| Bar Chart and Performance Table [Heading] | Fund Performance |
| Performance Narrative [Text Block] | The following bar chart and table provide some indication of the potential risks of investing in the Fund. Both the bar chart and the table assume that all distributions have been reinvested. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available at www.nuveen.com/etf or by calling (800) 257-8787.
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. |
| Performance Information Illustrates Variability of Returns [Text] | The table below shows the variability of the Fund’s average annual returns and how they compare over the time periods indicated with the S&P 500®Index and the Index. |
| Performance Additional Market Index [Text] | Performance is also shown for the Base Index, which more closely represents the REIT exposure sought by the Fund than the broad-based securities market index. |
| Bar Chart [Heading] | Annual Total Return* |
| Bar Chart Closing [Text Block] | During the period reflected in the bar chart above, the Fund’s highest and lowest quarterly returns were 19.26% and -29.29%, respectively, for the quarters ended December 31, 2020 and March 31, 2020.
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| Performance Table Heading | Average Annual Total Returns for the Periods EndedDecember 31, 2025 |
| Performance Table Narrative | The table below shows the variability of the Fund’s average annual returns and how they compare over the time periods indicated with the S&P 500® Index and the Index. Performance is also shown for the Base Index, which more closely represents the REIT exposure sought by the Fund than the broad-based securities market index. All after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your own actual after-tax returns will depend on your specific tax situation and may differ from what is shown here. After-tax returns are not relevant to investors who hold Fund shares in tax-deferred accounts such as IRAs or employer-sponsored retirement plans.
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| Performance Table Uses Highest Federal Rate | All after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. |
| Performance Table Not Relevant to Tax Deferred | After-tax returns are not relevant to investors who hold Fund shares in tax-deferred accounts such as IRAs or employer-sponsored retirement plans. |
| Performance Availability Website Address [Text] | www.nuveen.com/etf |
| Performance Availability Phone [Text] | (800) 257-8787 |
| Nuveen Short-Term REIT ETF | |
| Prospectus [Line Items] | |
| Year to Date Return, Label [Optional Text] | Year-to-date total return |
| Bar Chart, Year to Date Return | (2.10%) |
| Bar Chart, Year to Date Return, Date | Mar. 31, 2026 |
| Highest Quarterly Return, Label [Optional Text] | highest |
| Highest Quarterly Return | 19.26% |
| Highest Quarterly Return, Date | Dec. 31, 2020 |
| Lowest Quarterly Return, Label [Optional Text] | lowest |
| Lowest Quarterly Return | (29.29%) |
| Lowest Quarterly Return, Date | Mar. 31, 2020 |