Shareholder Report |
6 Months Ended | ||||||||||||||||||
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Mar. 31, 2026
USD ($)
Holdings
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| Shareholder Report [Line Items] | |||||||||||||||||||
| Document Type | N-CSRS | ||||||||||||||||||
| Amendment Flag | false | ||||||||||||||||||
| Registrant Name | Tidal Trust III | ||||||||||||||||||
| Entity Central Index Key | 0001722388 | ||||||||||||||||||
| Entity Investment Company Type | N-1A | ||||||||||||||||||
| Document Period End Date | Mar. 31, 2026 | ||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||
| Ned Davis Research 360 Dynamic Allocation ETF | |||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||
| Fund Name | Ned Davis Research 360° Dynamic Allocation ETF | ||||||||||||||||||
| Class Name | Ned Davis Research 360° Dynamic Allocation ETF | ||||||||||||||||||
| Trading Symbol | NDAA | ||||||||||||||||||
| Security Exchange Name | NASDAQ | ||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Ned Davis Research 360° Dynamic Allocation ETF (the "Fund") for the period October 1, 2025 to March 31, 2026. | ||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the Fund at www.ndrfunds.com. You can also request this information by contacting us at (844) 954-5050 or by writing to Ned Davis Research 360° Dynamic Allocation ETF, c/o U.S. Bank Global Fund Services, P.O. Box 701, Milwaukee, Wisconsin 53201‑0701. | ||||||||||||||||||
| Additional Information Phone Number | (844) 954-5050 | ||||||||||||||||||
| Additional Information Website | www.ndrfunds.com | ||||||||||||||||||
| Expenses [Text Block] | What
were the Fund costs for the past six months?
Costs paid as a percentage of investment are annualized. |
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| Expenses Paid, Amount | $ 25 | ||||||||||||||||||
| Expense Ratio, Percent | 0.50% | ||||||||||||||||||
| Net Assets | $ 3,039,000 | ||||||||||||||||||
| Holdings Count | Holdings | 9 | ||||||||||||||||||
| Advisory Fees Paid, Amount | $ 7,332 | ||||||||||||||||||
| Investment Company, Portfolio Turnover | 35.00% | ||||||||||||||||||
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of March 31, 2026)
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| Holdings [Text Block] | Sector/Security Type - Investments
![]() Percentages are based on total net assets. Cash & Cash Equivalents represents short-term investments and assets in excess of other liabilities. |
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| Largest Holdings [Text Block] | What did the Fund invest in? (as of March 31, 2026)
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