| Shareholder Report | 6 Months Ended |
| Oct. 31, 2024 USD ($) Holdings |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Tidal ETF Trust |
| Entity Central Index Key | 0001742912 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Oct. 31, 2024 |
| Robinson Alternative Yield Pre-Merger SPAC ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Robinson Alternative Yield Pre-Merger SPAC ETF |
| Class Name | Robinson
Alternative Yield Pre-Merger SPAC ETF |
| Trading Symbol | SPAX |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at www.robinsonetfs.com (833) 743-0330 |
| Additional Information Phone Number | (833) 743-0330 |
| Additional Information Website | www.robinsonetfs.com |
| Expenses [Text Block] | What were the Fund costs for the past six months? (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 Robinson Alternative Yield Pre-Merger SPAC ETF $40 0.79% Costs paid as a percentage of a $10,000 investment is an annualized figure. |
| Expenses Paid, Amount | $ 40 |
| Expense Ratio, Percent | 0.79% |
| Net Assets | $ 8,123,000 |
| Holdings Count | Holdings | 105 |
| Investment Company, Portfolio Turnover | 69% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of October 31, 2024 ) Fund Size (Thousands) $8,123 Number of Holdings 105 Portfolio Turnover 69% |
| Holdings [Text Block] | Sector Breakdown (% of total portfolio) Sector/Security Type % of Total Portfolio Common Stocks
(Special Purpose Acquisition Companies) 0.9850 Cash & Cash Equivalents 0.0120 Rights (Special Purpose Acquisition Companies) 0.002 Warrants (Special Purpose Acquisition Companies) 0.001 Percentages are based on total net assets. Cash & Cash Equivalents represents short-term investments, investments purchased with proceeds from securities lending, and liabilities in excess of other assets. |
| Largest Holdings [Text Block] | What did the Fund invest in? (as of October 31, 2024 ) Top Ten Holdings (% of net assets) Black Spade Acquisition II Co. 4.5 Spree Acquisition Corp. 1 Ltd. 4.4 Capitalworks Emerging Markets Acquisition Corp. - Class A 3.3 Launch Two Acquisition Corp. 3.1 Arogo Capital Acquisition Corp. - Class A 3.0 Concord Acquisition Corp. II - Class A 2.9 Plum Acquisition Corp. III 2.9 Healthcare AI Acquisition Corp. - Class A 2.7 ESH Acquisition Corp. - Class A 2.7 GP-Act III Acquisition Corp - Class A 2.6 |
| 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. |
