| Form N-CSR Cover | 6 Months Ended |
| Nov. 30, 2024 | |
| 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 | Nov. 30, 2024 |
| Shareholder Report | 6 Months Ended |
| Nov. 30, 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 | Nov. 30, 2024 |
| Newday Ocean Health ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Newday Ocean Health ETF |
| Class Name | Newday Ocean Health ETF |
| Trading Symbol | AHOY |
| 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.newdayimpactetfs.com (833) 486-7347 info newdayimpactetfs.com |
| Additional Information Phone Number | (833) 486-7347 |
| Additional Information Email | info@newdayimpactetfs.com |
| Additional Information Website | www.newdayimpactetfs.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 Newday Ocean Health ETF $39 0.75% Costs paid as a percentage of a $10,000 investment is an annualized figure. |
| Expenses Paid, Amount | $ 39 |
| Expense Ratio, Percent | 0.75% |
| Net Assets | $ 3,199,000 |
| Holdings Count | Holdings | 26 |
| Investment Company, Portfolio Turnover | 12% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of November 30, 2024 ) Fund Size (Thousands) $3,199 Number of Holdings 26 Portfolio Turnover 12% |
| Holdings [Text Block] | Sector Breakdown (% of total portfolio) Sector % Industrial 0.461 Consumer, Non-cyclical 0.248 Basic Materials 0.11 Consumer, Cyclical 0.101 Utilities 0.045 Financial 0.029 Cash Equivalents 0.006 Percentages are based on total net assets. Cash Equivalents represents short-term investments and other assets in excess of liabilities. |
| Largest Holdings [Text Block] | What did the Fund invest in? (as of November 30, 2024 ) Top Ten Holdings (% of net assets) Walmart, Inc. 5.5 Stantec, Inc. 5.1 Jacobs Solutions, Inc. 5.1 Ecolab, Inc. 4.8 Organo Corp. 4.7 Costco Wholesale Corp. 4.6 McKesson Corp. 4.6 Cargotec Oyj 4.5 Veolia Environnement SA 4.5 The Kroger Co. 4.4 |
| Material Fund Change [Text Block] | How has the Fund changed? This is a summary of certain changes to the Fund effective December 31, 2024. For more complete information, you may review the Fund’s prospectus, as supplemented. Tidal Investments LLC (“Tidal”), the Fund’s investment adviser, and Newday Funds, Inc., doing business as Newday Impact (“Newday”), the Fund’s investment sub-adviser, recommended to the Board of Trustees (the “Board”) of Tidal ETF Trust the closure and liquidation of the Fund. Unfortunately, despite the efforts of Newday, the Fund has been unable to garner sufficient assets to offset its ongoing operational costs, and Tidal and Newday are of the view that the Fund could not conduct its business and operations in an economically efficient manner over the long term. The Board determined, after considering the combined recommendation of Tidal and Newday, that it was in the best interests of the Fund and its shareholders to liquidate and terminate the Fund. The Fund liquidated on December 31, 2024. |
| Accountant Change Statement [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants. |
| Shareholder Report, Holdings (Details) - Newday Ocean Health ETF | Nov. 30, 2024 |
| Walmart, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| Stantec, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| Jacobs Solutions, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| Ecolab, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Organo Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Costco Wholesale Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| McKesson Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Cargotec Oyj [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Veolia Environnement SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| The Kroger Co. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| Industrial [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 46.10% |
| Consumer, Non-cyclical [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.80% |
| Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11% |
| Consumer, Cyclical [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.10% |
| Utilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Financial [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| Cash Equivalents [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
