| 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 |
| Leatherback Long/Short Alternative Yield ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Leatherback Long/Short Alternative Yield ETF |
| Class Name | Leatherback Long/Short Alternative Yield ETF |
| Trading Symbol | LBAY |
| 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.leatherbackam.com/etfs (833) 417-0090 |
| Additional Information Phone Number | (833) 417-0090 |
| Additional Information Website | www.leatherbackam.com/etfs |
| 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 Leatherback Long/Short Alternative Yield ETF $133 1.27% |
| Expenses Paid, Amount | $ 133 |
| Expense Ratio, Percent | 1.27% |
| Factors Affecting Performance [Text Block] | How did the Fund perform last year and what affected its performance? The Fund returned 10.01% (NAV) for the fiscal year ended August 31, 2024, vs 14.31% for the Wilshire Liquid Alternative Equity Hedge Index Total Return and 27.14% for the S&P 500 Total Return Index, the Fund's broad-based benchmark. The Fund invests in securities both long and short and maintains a high active share relative to its benchmark leading to material performance differences from its benchmarks. The investment objective of the Fund is to deliver both capital appreciation and income generation. During the reporting period, equity markets rose significantly, and leadership was very narrow as Mega cap information technology names far outperformed the overall market. The Fund performed positively, yet underperformed relatively as it had no long exposure to the mega cap technology leaders. What Factors Influenced Performance? During the period, securities in the information technology and communication services far outperformed all other sectors in the market. The lack of long exposure to certain mega-cap stocks, where much of the broader market’s gains were concentrated detracted from performance relative to its benchmark. Additionally, the shorting environment was difficult with many securities appreciating based on momentum characteristics. The Fund's short allocation lost money during the period. |
| 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 Leatherback Long/Short Alternative Yield ETF (NAV) Leatherback Long/Short Alternative Yield ETF (MKT) S&P 500® Total Return Index Wilshire Liquid Alternative Equity Hedge Total Return Index 11/16/20 10000 10000 10000 10000 11/30/20 9921 9931 9994 10019 12/31/20 10437 10451 10378 10220 1/31/21 10319 10290 10273 10177 2/28/21 10702 10727 10556 10446 3/31/21 11542 11555 11019 10763 4/30/21 12008 12007 11607 11053 5/31/21 12513 12515 11688 11177 6/30/21 11847 11829 11961 11178 7/31/21 11925 11942 12245 11260 8/31/21 12246 12249 12617 11398 9/30/21 12047 12046 12030 11160 10/31/21 12084 12095 12873 11449 11/30/21 11593 11598 12784 11309 12/31/21 12773 12780 13357 11536 1/31/22 13433 13437 12666 11344 2/28/22 13678 13688 12287 11166 3/31/22 14264 14299 12743 11261 4/30/22 14426 14402 11632 11099 5/31/22 15269 15303 11653 11126 6/30/22 14276 14306 10691 10665 7/31/22 14474 14492 11677 10985 8/31/22 14380 14414 11201 10764 9/30/22 13466 13481 10169 10289 10/31/22 14833 14841 10992 10690 11/30/22 15670 15661 11607 11051 12/31/22 15633 15645 10938 10806 1/31/23 15724 15743 11625 11121 2/28/23 14869 14882 11342 10963 3/31/23 14655 14647 11758 11070 4/30/23 14746 14731 11941 11192 5/31/23 13627 13651 11993 11148 6/30/23 14296 14308 12786 11476 7/31/23 14637 14619 13197 11650 8/31/23 14279 14290 12986 11611 9/30/23 14074 14081 12367 11419 10/31/23 13634 13638 12107 11332 11/30/23 14078 14071 13213 11766 12/31/23 14310 14310 13813 12028 1/31/24 14233 14256 14045 12207 2/29/24 14387 14405 14795 12457 3/31/24 15011 15042 15271 12755 4/30/24 14550 14556 14648 12540 5/31/24 14949 14945 15374 12833 6/30/24 14543 14460 15925 12945 7/31/24 15219 15230 16119 13083 8/31/24 15708 15704 16510 13272 |
| Average Annual Return [Table Text Block] | Annual Performance Annualized Returns for the Periods Ended August 31, 2024 1 Year Since Inception ( 11/16/2020 Leatherback Long/Short Alternative Yield ETF - NAV 10.01% 12.66% Leatherback Long/Short Alternative Yield ETF - Market 9.89% 12.65% S&P 500® Total Return Index 27.14% 14.15% Wilshire Liquid Alternative Equity Hedge Total Return Index 14.31% 7.76% |
| Performance Inception Date | Nov. 16, 2020 |
| 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. |
| Updated Performance Information Location [Text Block] | Visit www.leatherbackam.com/etfs for more recent performance information. |
| Net Assets | $ 42,478,000 |
| Holdings Count | Holdings | 58 |
| Advisory Fees Paid, Amount | $ 467,351 |
| Investment Company, Portfolio Turnover | 35% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of August 31, 2024 ) Fund Size (Thousands) $42,478 Number of Holdings 58 Total Advisory Fee Paid $467,351 Annual Portfolio Turnover 35 |
| Holdings [Text Block] | Sector Breakdown (% of total investments (excludes securities sold short)) Sector % Consumer, Non-cyclical 0.304 Financial 0.176 Industrial 0.151 Communications 0.093 Basic Materials 0.085 Technology 0.057 Cash Equivalents 0.045 Energy 0.038 Utilities 0.027 Consumer, Cyclical 0.024 Sector - Securities Sold Short (% of total securities sold short) Sector % Consumer, Cyclical 0.435 Financial 0.267 Communications 0.097 Industrial 0.080 Technology 0.076 Consumer, Non-cyclical 0.045 |
| Largest Holdings [Text Block] | Top Ten Holdings (% of net assets) Bunge Global SA 5.0 Exxon Mobil Corp. 4.8 Old Republic International Corp. 4.7 Newmont Corp. 4.7 3M Co. 4.5 Fidelity National Information Services, Inc. 4.5 Zimmer Biomet Holdings, Inc. 4.3 Altria Group, Inc. 4.3 Lamb Weston Holdings, Inc. 4.1 AGNC Investment Corp. 4.0 |
| Material Fund Change [Text Block] | How has the Fund changed? There were no material changes during the reporting period. |
| Accountant Change Statement [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants. |
| Shareholder Report, Line Graph (Details) - USD ($) | Aug. 31, 2024 | Jul. 31, 2024 | Jun. 30, 2024 | May 31, 2024 | Apr. 30, 2024 | Mar. 31, 2024 | Feb. 28, 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 | Sep. 30, 2022 | Aug. 31, 2022 | Jul. 31, 2022 | Jun. 30, 2022 | May 31, 2022 | Apr. 30, 2022 | Mar. 31, 2022 | Feb. 28, 2022 | Jan. 31, 2022 | Dec. 31, 2021 | Nov. 30, 2021 | Oct. 31, 2021 | Sep. 01, 2021 | Aug. 31, 2021 | Jul. 31, 2021 | Jun. 30, 2021 | May 31, 2021 | Apr. 30, 2021 | Mar. 31, 2021 | Feb. 28, 2021 | Jan. 31, 2021 | Dec. 31, 2020 | Nov. 30, 2020 | Nov. 16, 2020 |
| Leatherback Long/Short Alternative Yield ETF | |||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||
| Account Value | $ 15,708 | $ 15,219 | $ 14,543 | $ 14,949 | $ 14,550 | $ 15,011 | $ 14,387 | $ 14,233 | $ 14,310 | $ 14,078 | $ 13,634 | $ 14,074 | $ 14,279 | $ 14,637 | $ 14,296 | $ 13,627 | $ 14,746 | $ 14,655 | $ 14,869 | $ 15,724 | $ 15,633 | $ 15,670 | $ 14,833 | $ 13,466 | $ 14,380 | $ 14,474 | $ 14,276 | $ 15,269 | $ 14,426 | $ 14,264 | $ 13,678 | $ 13,433 | $ 12,773 | $ 11,593 | $ 12,084 | $ 12,047 | $ 12,246 | $ 11,925 | $ 11,847 | $ 12,513 | $ 12,008 | $ 11,542 | $ 10,702 | $ 10,319 | $ 10,437 | $ 9,921 | $ 10,000 |
| S&P 500 Total Return Index | |||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||
| Account Value | 16,510 | 16,119 | 15,925 | 15,374 | 14,648 | 15,271 | 14,795 | 14,045 | 13,813 | 13,213 | 12,107 | 12,367 | 12,986 | 13,197 | 12,786 | 11,993 | 11,941 | 11,758 | 11,342 | 11,625 | 10,938 | 11,607 | 10,992 | 10,169 | 11,201 | 11,677 | 10,691 | 11,653 | 11,632 | 12,743 | 12,287 | 12,666 | 13,357 | 12,784 | 12,873 | 12,030 | 12,617 | 12,245 | 11,961 | 11,688 | 11,607 | 11,019 | 10,556 | 10,273 | 10,378 | 9,994 | 10,000 |
| Leatherback Long/Short Alternative Yield ETF (MKT) | |||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||
| Account Value | 15,704 | 15,230 | 14,460 | 14,945 | 14,556 | 15,042 | 14,405 | 14,256 | 14,310 | 14,071 | 13,638 | 14,081 | 14,290 | 14,619 | 14,308 | 13,651 | 14,731 | 14,647 | 14,882 | 15,743 | 15,645 | 15,661 | 14,841 | 13,481 | 14,414 | 14,492 | 14,306 | 15,303 | 14,402 | 14,299 | 13,688 | 13,437 | 12,780 | 11,598 | 12,095 | 12,046 | 12,249 | 11,942 | 11,829 | 12,515 | 12,007 | 11,555 | 10,727 | 10,290 | 10,451 | 9,931 | 10,000 |
| Wilshire Liquid Alternative Equity Hedge Total Return Index | |||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||
| Account Value | $ 13,272 | $ 13,083 | $ 12,945 | $ 12,833 | $ 12,540 | $ 12,755 | $ 12,457 | $ 12,207 | $ 12,028 | $ 11,766 | $ 11,332 | $ 11,419 | $ 11,611 | $ 11,650 | $ 11,476 | $ 11,148 | $ 11,192 | $ 11,070 | $ 10,963 | $ 11,121 | $ 10,806 | $ 11,051 | $ 10,690 | $ 10,289 | $ 10,764 | $ 10,985 | $ 10,665 | $ 11,126 | $ 11,099 | $ 11,261 | $ 11,166 | $ 11,344 | $ 11,536 | $ 11,309 | $ 11,449 | $ 11,160 | $ 11,398 | $ 11,260 | $ 11,178 | $ 11,177 | $ 11,053 | $ 10,763 | $ 10,446 | $ 10,177 | $ 10,220 | $ 10,019 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 46 Months Ended |
| Aug. 31, 2024 | Aug. 31, 2024 | |
| Leatherback Long/Short Alternative Yield ETF | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 10.01% | 12.66% |
| S&P 500 Total Return Index | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 27.14% | 14.15% |
| Leatherback Long/Short Alternative Yield ETF (MKT) | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 9.89% | 12.65% |
| Wilshire Liquid Alternative Equity Hedge Total Return Index | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 14.31% | 7.76% |
| Shareholder Report, Holdings (Details) | Aug. 31, 2024 |
| Bunge Global SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| Exxon Mobil Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Old Republic International Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Newmont Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| 3M Co. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Fidelity National Information Services, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Zimmer Biomet Holdings, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| Altria Group, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| Lamb Weston Holdings, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| AGNC Investment Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| Consumer, Non-cyclical [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.40% |
| Percent of Net Short Exposure | 4.50% |
| Financial [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.60% |
| Percent of Net Short Exposure | 26.70% |
| Industrial [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| Percent of Net Short Exposure | 8% |
| Communications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.30% |
| Percent of Net Short Exposure | 9.70% |
| Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| Technology [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| Percent of Net Short Exposure | 7.60% |
| Cash Equivalents [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Energy [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| Utilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| Consumer, Cyclical [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Percent of Net Short Exposure | 43.50% |
