C000175723 [Member] Nuveen ESG Large-Cap Growth ETF C000175724 [Member] Nuveen ESG Large-Cap Value ETF C000175725 [Member] Nuveen ESG Mid-Cap Growth ETF Common Stock [Member] C000175726 [Member] Nuveen ESG Mid-Cap Value ETF Common Stock Rights [Member] Investments Purchased with Collateral from Securities Lending [Member] C000175727 [Member] Nuveen ESG Small-Cap ETF AUSTRALIA FRANCE GERMANY ITALY JAPAN NETHERLANDS SPAIN SWITZERLAND UNITED KINGDOM UNITED STATES C000183268 [Member] Nuveen ESG International Developed Markets Equity ETF Other [Member] C000183269 [Member] Nuveen ESG Emerging Markets Equity ETF UNITED ARAB EMIRATES TAIWAN SOUTH AFRICA SAUDI ARABIA POLAND MEXICO KOREA, REPUBLIC OF INDIA CHINA BRAZIL C000206035 [Member] Nuveen ESG Large-Cap ETF C000228786 [Member] Nuveen ESG Dividend ETF C000230537 [Member] Nuveen Growth Opportunities ETF Investments Companies [Member] Investment Type [Axis] Net Assets Investment Company Portfolio Turnover No Trading Symbol Flag