| 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 |
| God Bless America ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | God Bless America ETF |
| Class Name | God Bless America ETF |
| Trading Symbol | YALL |
| 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.godblessamericaetf.com (855) 434-4080 |
| Additional Information Phone Number | (855) 434-4080 |
| Additional Information Website | www.godblessamericaetf.com |
| 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 God Bless America ETF $ 77 0.65% |
| Expenses Paid, Amount | $ 77 |
| Expense Ratio, Percent | 0.65% |
| Factors Affecting Performance [Text Block] | How did the Fund perform last year and what affected its performance? The Fund returned 36.45% (NAV) for the fiscal year ended August 31, 2024 as compared to 27.14% for the S&P 500® Total Return Index (the ''S&P 500®''). The Fund invests at least 80% of its net assets in equity securities listed on U.S. exchanges across eleven sectors of the S&P 500®, and performance was positively impacted by having over 90% of the Fund's portfolio invested during the period. Domestic equities rallied for the year and were generally influenced by shifting expectations around GDP growth, inflation, and anticipation for lower interest rates. What Factors Influenced Performance? While the Fund remained structurally underweight the technology sector relative to the S&P 500® during the reporting period, stock selection and active positioning within the sector had a positive contribution to performance. Greater exposure to the health care and utilities sectors relative to the S&P 500® positively impacted performance. Stock selection within health care also contributed to performance. The Fund’s overweight the consumer staples sector relative to the S&P 500® and stock selection within that sector detracted from performance 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. |
| Average Annual Return [Table Text Block] | Annual Performance Annualized Returns for the Periods Ended August 31, 2024 1 Year Since Inception ( 10/10/2022 God Bless America ETF (NAV) 36.45% 40.17% God Bless America ETF (MKT) 36.28% 40.13% S&P 500® Total Return Index 27.14% 28.68% |
| Performance Inception Date | Oct. 10, 2022 |
| 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.godblessamericaetf.com for more recent performance information. |
| Net Assets | $ 77,574,000 |
| Holdings Count | Holdings | 41 |
| Advisory Fees Paid, Amount | $ 394,588 |
| Investment Company, Portfolio Turnover | 24% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of August 31, 2024 ) Fund Size (Thousands) $77,574 Number of Holdings 41 Total Advisory Fee Paid $394,588 Annual Portfolio Turnover 24 |
| Holdings [Text Block] | What did the Fund invest in? (as of August 31, 2024 ) Sector Breakdown (% of net assets) Sector % Consumer, Non-cyclical 0.216 Consumer, Cyclical 0.177 Technology 0.173 Financial 0.151 Industrial 0.113 Energy 0.046 Communications 0.044 Basic Materials 0.042 Utilities 0.031 Cash & Cash Equivalents 0.007 |
| Largest Holdings [Text Block] | Top Ten Holdings (% of net assets) NVIDIA Corp. 6.4 Tesla, Inc. 5.9 HCA Healthcare, Inc. 5.0 The Boeing Co. 4.9 Broadcom, Inc. 4.8 Amgen, Inc. 4.7 The Allstate Corp. 4.6 Danaher Corp. 4.6 Costco Wholesale Corp. 4.5 Charter Communications, Inc. - Class A 4.4 |
| Material Fund Change [Text Block] | How has the Fund changed? There were no material changes during the reporting period. |
| Accountant Change Statement [Text Block] | Changes in and Disagreements with Accountants There were no changes in or disagreements with accountants. |
| Shareholder Report, Line Graph (Details) - USD ($) | Aug. 31, 2024 | Jul. 31, 2024 | Jun. 30, 2024 | May 31, 2024 | Apr. 30, 2024 | Mar. 31, 2024 | Feb. 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 | Oct. 10, 2022 |
| God Bless America ETF | ||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||
| Account Value | $ 18,934 | $ 18,919 | $ 17,837 | $ 17,365 | $ 16,434 | $ 17,426 | $ 16,296 | $ 15,129 | $ 15,200 | $ 14,119 | $ 12,759 | $ 13,170 | $ 13,876 | $ 14,207 | $ 13,464 | $ 12,361 | $ 12,109 | $ 12,160 | $ 11,901 | $ 11,889 | $ 10,833 | $ 11,623 | $ 10,807 | $ 10,000 |
| S&P 500 Total Return Index | ||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||
| Account Value | 16,108 | 15,726 | 15,537 | 14,999 | 14,291 | 14,899 | 14,435 | 13,703 | 13,477 | 12,891 | 11,812 | 12,066 | 12,670 | 12,875 | 12,474 | 11,701 | 11,650 | 11,471 | 11,065 | 11,342 | 10,671 | 11,324 | 10,724 | 10,000 |
| God Bless America ETF (MKT) | ||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||
| Account Value | $ 18,925 | $ 18,939 | $ 17,843 | $ 17,342 | $ 16,448 | $ 17,453 | $ 16,316 | $ 15,138 | $ 15,227 | $ 14,137 | $ 12,775 | $ 13,176 | $ 13,887 | $ 14,195 | $ 13,476 | $ 12,371 | $ 12,108 | $ 12,154 | $ 11,920 | $ 11,876 | $ 10,826 | $ 11,601 | $ 10,812 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 23 Months Ended |
| Aug. 31, 2024 | Aug. 31, 2024 | |
| God Bless America ETF | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 36.45% | 40.17% |
| S&P 500 Total Return Index | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 27.14% | 28.68% |
| God Bless America ETF (MKT) | ||
| Average Annual Return [Line Items] | ||
| Average Annual Return, Percent | 36.28% | 40.13% |
| Shareholder Report, Holdings (Details) - God Bless America ETF | Aug. 31, 2024 |
| NVIDIA Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| Tesla, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| HCA Healthcare, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| The Boeing Co. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| Broadcom, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Amgen, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| The Allstate Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Danaher Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Costco Wholesale Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Charter Communications, Inc. - Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| Consumer, Non-cyclical [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.60% |
| Consumer, Cyclical [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.70% |
| Technology [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.30% |
| Financial [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| Industrial [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| Energy [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Communications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| Utilities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Cash and Cash Equivalents [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
