| Form N-CSR Cover | 12 Months Ended |
| Aug. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Tidal ETF Trust |
| Entity Central Index Key | 0001742912 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Aug. 31, 2024 |
| Shareholder Report | 12 Months Ended |
| Aug. 31, 2024 USD ($) Holdings | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Tidal ETF Trust |
| Entity Central Index Key | 0001742912 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Aug. 31, 2024 |
| Unlimited HFND Multi-Strategy Return Tracker ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Unlimited HFND Multi-Strategy Return Tracker ETF |
| Class Name | Unlimited HFND Multi-Strategy Return Tracker ETF |
| Trading Symbol | HFND |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at www.unlimitedetfs.com (844) 986-7700 |
| Additional Information Phone Number | (844) 986-7700 |
| Additional Information Website | www.unlimitedetfs.com |
| Expenses [Text Block] | What were the Fund costs for the past year? (based on a hypothetical $10,000 investment) Fund Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Unlimited HFND Multi-Strategy Return Tracker ETF $ 191 1.83 |
| Expenses Paid, Amount | $ 191 |
| Expense Ratio, Percent | 1.83% |
| Factors Affecting Performance [Text Block] | How did the Fund perform last year and what affected its performance? The Fund returned 8.64% for the fiscal year ended August 31, 2024, while the S&P 500® Total Return Index returned 27.14% for the same period. During the period the Fund's largest positions were in global equity markets and high yield bonds, which rallied over the period as global growth outperformed relative to expectations and the Federal Reserve signaled a desire to shift to an easing cycle. What Factors Influenced Performance? The Fund intends to hold positions that track the risk/return profile of the hedge fund industry. The Fund held a diverse set of global asset positions in line with this objective including non-U.S. stocks, a range of credit assets, and global commodities. While most of these assets rallied during the period, global assets generally underperformed U.S. megacap stocks which comprised a large portion of the S&P 500 Index. Further the Fund held a portion of assets in cash, reflecting estimated lower risk taking by hedge fund managers which added further drag on performance relative to U.S. stocks. |
| Performance Past Does Not Indicate Future [Text] | The Fund's past performance is not a good indicator of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Cumulative Performance (Initial Investment of $10,000) Date Unlimited HFND Multi-Strategy Return Tracker ETF (NAV) Unlimited HFND Multi-Strategy Return Tracker ETF (MKT) S&P 500® Total Return Index Bloomberg U.S. Aggregate Bond Index 10/10/2022 10000 10000 10000 10000 10/31/2022 10154 10185 10724 9896 11/30/2022 10427 10440 11324 10260 12/31/2022 10208 10233 10671 10213 1/31/2023 10578 10605 11342 10527 2/28/2023 10318 10359 11065 10255 3/31/2023 10251 10234 11471 10516 4/30/2023 10243 10259 11650 10580 5/31/2023 10029 10021 11701 10464 6/30/2023 10373 10357 12474 10427 7/31/2023 10590 10587 12875 10420 8/31/2023 10346 10351 12670 10353 9/30/2023 10161 10163 12066 10090 10/31/2023 9972 9983 11812 9931 11/30/2023 10303 10298 12891 10381 12/31/2023 10610 10600 13477 10778 1/31/2024 10567 10597 13703 10748 2/29/2024 10816 10757 14435 10597 3/31/2024 11085 11121 14899 10694 4/30/2024 10793 10760 14291 10424 5/31/2024 11069 11008 14999 10601 6/30/2024 11074 11078 15537 10701 7/31/2024 11227 11269 15726 10951 8/31/2024 11239 11235 16108 11109 |
| Average Annual Return [Table Text Block] | Annual Performance Annualized Returns for the Periods Ended August 31, 2024 1 Year Since Inception ( 10/10/2022 Unlimited HFND Multi-Strategy Return Tracker ETF - NAV 8.64% 6.37% Unlimited HFND Multi-Strategy Return Tracker ETF - Market 8.54% 6.36% S&P 500® Total Return Index 27.14% 28.68% Bloomberg U.S. Aggregate Bond Index* 7.30% 5.72% |
| Performance Inception Date | Oct. 10, 2022 |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 38,073,000 |
| Holdings Count | Holdings | 50 |
| Advisory Fees Paid, Amount | $ 360,887 |
| Investment Company, Portfolio Turnover | 340% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of August 31, 2024 ) Fund Size (Thousands) $38,073 Number of Holdings 50 Total Advisory Fee Paid $360,887 Annual Portfolio Turnover 340 |
| Holdings [Text Block] | What did the Fund invest in? (as of August 31, 2024 ) Sector Breakdown - Total Investments (% of net assets) Sector % Exchange Traded Funds 105.1% Cash and Cash Equivalents -5.1% Sector Breakdown - Total Securities Sold Short (% of net assets) Sector % Exchange Traded Funds 9% Other Financial Instruments By Security Type (% of net assets) Sector % Open Futures Contracts Purchased 0.8% Open Futures Contracts Sold 0% |
| Largest Holdings [Text Block] | Top Ten Holdings (% of net assets) iShares iBoxx $ High Yield Corporate Bond ETF 29.8 Vanguard FTSE Emerging Markets ETF 11.2 Invesco Senior Loan ETF 7.3 iShares Convertible Bond ETF 6.8 Vanguard Growth ETF 6.7 Vanguard Total International Stock ETF 5.8 iShares MSCI Australia ETF 4.8 ProShares Investment Grade-Interest Rate Hedged ETF 4.3 iShares J.P. Morgan EM High Yield Bond ETF 3.8 SPDR S&P Homebuilders ETF 3.7 |
| Material Fund Change [Text Block] | How has the Fund changed? There were no material changes during the reporting period. |
| Accountant Change Statement [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants. |
| Shareholder Report, Line Graph (Details) - USD ($) | Aug. 31, 2024 | Jul. 31, 2024 | Jun. 30, 2024 | May 31, 2024 | Apr. 30, 2024 | Mar. 31, 2024 | Feb. 29, 2024 | Jan. 31, 2024 | Dec. 31, 2023 | Nov. 30, 2023 | Oct. 31, 2023 | Sep. 30, 2023 | Aug. 31, 2023 | Jul. 31, 2023 | Jun. 30, 2023 | May 31, 2023 | Apr. 30, 2023 | Mar. 31, 2023 | Feb. 28, 2023 | Jan. 31, 2023 | Dec. 31, 2022 | Nov. 30, 2022 | Oct. 31, 2022 | Oct. 10, 2022 |
| Unlimited HFND Multi-Strategy Return Tracker ETF | ||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||
| Account Value | $ 11,239 | $ 11,227 | $ 11,074 | $ 11,069 | $ 10,793 | $ 11,085 | $ 10,816 | $ 10,567 | $ 10,610 | $ 10,303 | $ 9,972 | $ 10,161 | $ 10,346 | $ 10,590 | $ 10,373 | $ 10,029 | $ 10,243 | $ 10,251 | $ 10,318 | $ 10,578 | $ 10,208 | $ 10,427 | $ 10,154 | $ 10,000 |
| Unlimited HFND Multi-Strategy Return Tracker ETF - Market | ||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||
| Account Value | 11,235 | 11,269 | 11,078 | 11,008 | 10,760 | 11,121 | 10,757 | 10,597 | 10,600 | 10,298 | 9,983 | 10,163 | 10,351 | 10,587 | 10,357 | 10,021 | 10,259 | 10,234 | 10,359 | 10,605 | 10,233 | 10,440 | 10,185 | 10,000 |
| S&P 500 Total Return Index [Member] | ||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||
| Account Value | 16,108 | 15,726 | 15,537 | 14,999 | 14,291 | 14,899 | 14,435 | 13,703 | 13,477 | 12,891 | 11,812 | 12,066 | 12,670 | 12,875 | 12,474 | 11,701 | 11,650 | 11,471 | 11,065 | 11,342 | 10,671 | 11,324 | 10,724 | 10,000 |
| Bloomberg U.S. Aggregate Bond Index [Member] | ||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||
| Account Value | $ 11,109 | $ 10,951 | $ 10,701 | $ 10,601 | $ 10,424 | $ 10,694 | $ 10,597 | $ 10,748 | $ 10,778 | $ 10,381 | $ 9,931 | $ 10,090 | $ 10,353 | $ 10,420 | $ 10,427 | $ 10,464 | $ 10,580 | $ 10,516 | $ 10,255 | $ 10,527 | $ 10,213 | $ 10,260 | $ 9,896 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 23 Months Ended |
| Aug. 31, 2024 | Aug. 31, 2024 | |
| Unlimited HFND Multi-Strategy Return Tracker ETF | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 8.64% | 6.37% |
| S&P 500 Total Return Index [Member] | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 27.14% | 28.68% |
| Bloomberg U.S. Aggregate Bond Index [Member] | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 7.30% | 5.72% |
| Unlimited HFND Multi-Strategy Return Tracker ETF - Market | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 8.54% | 6.36% |
| Shareholder Report, Holdings (Details) - Unlimited HFND Multi-Strategy Return Tracker ETF | Aug. 31, 2024 |
| iShares iBoxx $ High Yield Corporate Bond ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 29.80% |
| Vanguard FTSE Emerging Markets ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.20% |
| Invesco Senior Loan ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.30% |
| iShares Convertible Bond ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| Vanguard Growth ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| Vanguard Total International Stock ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| iShares MSCI Australia ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| ProShares Investment Grade-Interest Rate Hedged ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| iShares J.P. Morgan EM High Yield Bond ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| SPDR S&P Homebuilders ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| Exchange Traded Funds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 105.10% |
| Percent of Net Short Exposure | 9% |
| Open Futures Contracts Purchased [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Open Futures Contracts Sold [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Cash and Cash Equivalents [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (5.10%) |
