| Form N-CSR Cover | 12 Months Ended |
| May 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 | May 31, 2024 |
| Shareholder Report | 12 Months Ended |
| May 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 | May 31, 2024 |
| Newday Ocean Health ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Newday Ocean Health ETF |
| Class Name | Newday Ocean Health ETF |
| Trading Symbol | AHOY |
| Annual or Semi-Annual Statement [Text Block] | annual Shareholder Report May 31, 2024 |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | This annual shareholder report www.newdayimpactetfs.com (833) 486-7347 |
| Additional Information Phone Number | (833) 486-7347 |
| 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 $ 75 0.75 |
| Expenses Paid, Amount | $ 75 |
| Expense Ratio, Percent | 0.75% |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Annual Performance Annualized Returns for the Year Ended May 31, 2024: 1 Year Since Inception (6/6/2022) Ending Value (5/31/2024) Newday Ocean Health ETF - NAV 28.01% 10.84% $12,264 Newday Ocean Health ETF - Market 28.18% 10.97% $12,293 MSCI ACWI Net Total Return Index 23.56% 11.77% $12,470 S&P 500® Total Return Index 28.19% 15.12% $13,223 |
| Material Change Description [Text Block] | During the reporting period the Fund made material changes to its principal investment strategies. The Fund revised its principal investment strategies to (i) modify the criteria for inclusion in the Fund’s investment universe, (ii) revise the criteria for excluding companies from the Fund’s investment universe, (iii) reduce the target number of holdings in the Fund's portfolio, and (iv) revise the portfolio selection process to include a description of the qualitative analysis undertaken with respect to potential investments. Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants during the reporting period. |
| Net Assets | $ 3,036 |
| Holdings Count | Holdings | 26 |
| Advisory Fees Paid, Amount | $ 18,994 |
| Investment Company, Portfolio Turnover | 93% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of May 31, 2024 ) Fund Size (Thousands) $3,036 Number of Holdings 26 Total Advisory Fee Paid $18,994 Annual Portfolio Turnover 93% |
| Holdings [Text Block] | Sector Breakdown (% of net assets) Sector % of Net Assets Industrial 43.3 Consumer, Non-cyclical 25.9 Basic Materials 13.7 Consumer, Cyclical 9.2 Utilities 4.3 Financial 2.6 Cash & Cash Equivalents 1.0 Percentages are based on total net assets. Cash & Cash Equivalents represents cash, short-term investments and other assets in excess of liabilities. |
| Largest Holdings [Text Block] | Top 10 Holdings (% of net assets) Tetra Tech, Inc. 5.1 DSM-Firmenich AG 5.0 Xylem, Inc. 5.0 Cargotec Oyj - Class B 5.0 Walmart, Inc. 4.8 Ecolab, Inc. 4.7 Organo Corp. 4.4 Costco Wholesale Corp. 4.4 Veolia Environnement SA - ADR 4.3 McKesson Corp. 4.2 |
| Shareholder Report, Line Graph (Details) - USD ($) | 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 | Sep. 30, 2022 | Aug. 31, 2022 | Jul. 31, 2022 | Jun. 30, 2022 | Jun. 06, 2022 |
| Newday Ocean Health ETF | |||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||
| Account Value | $ 12,264 | $ 11,756 | $ 11,900 | $ 11,537 | $ 11,084 | $ 10,937 | $ 10,484 | $ 9,555 | $ 9,836 | $ 10,351 | $ 10,605 | $ 10,312 | $ 9,580 | $ 9,736 | $ 9,759 | $ 9,575 | $ 9,945 | $ 9,367 | $ 9,945 | $ 9,435 | $ 8,826 | $ 9,681 | $ 10,183 | $ 9,453 | $ 10,000 |
| Newday Ocean Health ETF - Market | |||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||
| Account Value | 12,293 | 11,720 | 11,916 | 11,550 | 11,061 | 10,951 | 10,496 | 9,573 | 9,848 | 10,360 | 10,599 | 10,328 | 9,591 | 9,729 | 9,757 | 9,589 | 9,930 | 9,376 | 9,939 | 9,434 | 8,839 | 9,719 | 10,191 | 9,445 | 10,000 |
| MSCI ACWI Net Total Return Index | |||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||
| Account Value | 12,470 | 11,983 | 12,392 | 12,015 | 11,520 | 11,453 | 10,928 | 10,005 | 10,315 | 10,760 | 11,069 | 10,678 | 10,092 | 10,202 | 10,057 | 9,756 | 10,044 | 9,372 | 9,756 | 9,054 | 8,539 | 9,443 | 9,804 | 9,164 | 10,000 |
| S&P 500® Total Return Index | |||||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||||
| Account Value | $ 13,223 | $ 12,598 | $ 13,135 | $ 12,725 | $ 12,080 | $ 11,881 | $ 11,364 | $ 10,413 | $ 10,637 | $ 11,169 | $ 11,350 | $ 10,997 | $ 10,315 | $ 10,271 | $ 10,113 | $ 9,755 | $ 9,999 | $ 9,408 | $ 9,983 | $ 9,454 | $ 8,746 | $ 9,633 | $ 10,043 | $ 9,195 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 24 Months Ended |
| May 31, 2024 | May 31, 2024 | |
| Newday Ocean Health ETF | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 28.01% | 10.84% |
| Newday Ocean Health ETF - Market | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 28.18% | 10.97% |
| MSCI ACWI Net Total Return Index | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 23.56% | 11.77% |
| S&P 500® Total Return Index | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 28.19% | 15.12% |
| Shareholder Report, Holdings (Details) - Newday Ocean Health ETF | May 31, 2024 |
| Tetra Tech, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| DSM-Firmenich AG [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| Xylem, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| Cargotec Oyj - Class B [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| Walmart, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Ecolab, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Organo Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| Costco Wholesale Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| Veolia Environnement SA - ADR [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| McKesson Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| Industrial [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 43.30% |
| Consumer, Non-cyclical [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 25.90% |
| Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.70% |
| Consumer, Cyclical [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.20% |
| Utilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| Financial [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Cash and Cash Equivalents [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
