| Form N-CSR Cover | 6 Months Ended |
| Oct. 31, 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 | Oct. 31, 2024 |
| 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 |
| ZEGA Buy and Hedge ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | ZEGA Buy and Hedge ETF |
| Class Name | ZEGA Buy and Hedge ETF |
| Trading Symbol | ZHDG |
| 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.zegaetfs.com (833) 415-4006 |
| Additional Information Phone Number | (833) 415-4006 |
| Additional Information Website | www.zegaetfs.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 ZEGA Buy and Hedge ETF $51 0.96% Costs paid as a percentage of a $10,000 investment is an annualized figure. |
| Expenses Paid, Amount | $ 51 |
| Expense Ratio, Percent | 0.96% |
| Net Assets | $ 27,445,000 |
| Holdings Count | Holdings | 10 |
| Investment Company, Portfolio Turnover | 18% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of October 31, 2024 ) Fund Size (Thousands) $27,445 Number of Holdings 10 Portfolio Turnover 18% |
| Holdings [Text Block] | Sector Breakdown (% of total portfolio) Sector/Security Type % of Total Portfolio Purchased Options 0.666 U.S. Treasury Securities 0.185 Cash & Cash Equivalents 0.149 Percentages are based on total net assets. Cash & 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 October 31, 2024 ) Top Holdings (% of net assets) SPDR S&P 500 ETF Put Option, Expiration: 12/19/2025; Exercise Price: $205.01 64.8 United States Treasury Note/Bond, 3.88%, 01/15/2026 4.7 United States Treasury Note/Bond, 3.00%, 07/15/2025 4.7 United States Treasury Note/Bond, 2.63%, 04/15/2025 4.6 United States Treasury Note/Bond, 0.75%, 11/15/2024 4.5 SPDR S&P 500 ETF Call Option, Expiration: 06/20/2025; Exercise Price: $500.00 0.6 SPDR S&P 500 ETF Call Option, Expiration: 09/19/2025; Exercise Price: $500.00 0.5 SPDR S&P 500 ETF Call Option, Expiration: 08/15/2025; Exercise Price: $500.00 0.4 SPDR S&P 500 ETF Call Option, Expiration: 03/21/2025; Exercise Price: $485.00 0.3 |
| 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, Holdings (Details) - ZEGA Buy and Hedge ETF | Oct. 31, 2024 |
| SPDR S&P 500 ETF Put Option, Expiration: 12/19/2025; Exercise Price: $205.01 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 64.80% |
| United States Treasury Note/Bond, 3.88%, 01/15/2026 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| United States Treasury Note/Bond, 3.00%, 07/15/2025 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| United States Treasury Note/Bond, 2.63%, 04/15/2025 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| United States Treasury Note/Bond, 0.75%, 11/15/2024 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| SPDR S&P 500 ETF Call Option, Expiration: 06/20/2025; Exercise Price: $500.00 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| SPDR S&P 500 ETF Call Option, Expiration: 09/19/2025; Exercise Price: $500.00 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| SPDR S&P 500 ETF Call Option, Expiration: 08/15/2025; Exercise Price: $500.00 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| SPDR S&P 500 ETF Call Option, Expiration: 03/21/2025; Exercise Price: $485.00 [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Purchased Options [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 66.60% |
| US Treasury Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.50% |
| Cash and Cash Equivalents [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.90% |
