| Form N-CSR Cover | 6 Months Ended |
| Jul. 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 | Jul. 31, 2024 |
| Shareholder Report | 6 Months Ended |
| Jul. 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 | Jul. 31, 2024 |
| Intelligent Real Estate ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Intelligent Real Estate ETF |
| Class Name | Intelligent Real Estate ETF |
| Trading Symbol | REAI |
| 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.armadaetfs.com (800) 693-8288 |
| Additional Information Phone Number | (800) 693-8288 |
| Additional Information Website | www.armadaetfs.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 Intelligent Real Estate ETF $29 0.59% |
| Expenses Paid, Amount | $ 29 |
| Expense Ratio, Percent | 0.59% |
| Net Assets | $ 3,730,000 |
| Holdings Count | Holdings | 40 |
| Investment Company, Portfolio Turnover | 86% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of July 31, 2024 ) Fund Size (Thousands) $3,730 Number of Holdings 40 Annual Portfolio Turnover 86% |
| Holdings [Text Block] | Sector Breakdown (% of net assets) Security % of Total Net Assets Diversified 0.084 Office Property 0.148 Warehouse & Industry 0.049 Apartments 0.116 Shopping Centers 0.244 Hotels 0.101 Storage 0.051 Health Care 0.093 Manufactured Homes 0.056 Single Tenant 0.030 Regional Malls 0.029 Cash & Cash Equivalents -0.01 Percentages are based on total net assets. Cash & Cash Equivalents represents short-term investments and liabilities in excess of other assets. |
| Largest Holdings [Text Block] | What did the Fund invest in? (as of July 31, 2024 ) Top Ten Holdings (% of net assets) BXP, Inc. 3.2 Kimco Realty Corp. 3.2 Crown Castle, Inc. 3.2 Prologis, Inc. 3.2 Gaming and Leisure Properties, Inc. 3.1 American Tower Corp. 3.1 SBA Communications Corp. 3.1 VICI Properties, Inc. 3.1 Weyerhaeuser Co. 3.1 Omega Healthcare Investors, Inc. 3.0 |
| 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. |
| Residential REIT ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Residential REIT ETF |
| Class Name | Residential REIT ETF |
| Trading Symbol | HAUS |
| 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.armadaetfs.com (800) 693-8288 |
| Additional Information Phone Number | (800) 693-8288 |
| Additional Information Website | www.armadaetfs.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 Residential REIT ETF $30 0.60% |
| Expenses Paid, Amount | $ 30 |
| Expense Ratio, Percent | 0.60% |
| Net Assets | $ 2,741,000 |
| Holdings Count | Holdings | 23 |
| Investment Company, Portfolio Turnover | 9% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of July 31, 2024 ) Fund Size (Thousands) $2,741 Number of Holdings 23 Annual Portfolio Turnover 9% |
| Holdings [Text Block] | Sector Breakdown (% of net assets) Security % of Total Net Assets Apartments 0.628 Diversified 0.096 Health Care 0.093 Manufactured Homes 0.094 Storage 0.088 Cash Equivalents 0.001 Percentages are based on total net assets. Cash & Cash Equivalents represents short-term investments and liabilities in excess of other assets. |
| Largest Holdings [Text Block] | What did the Fund invest in? (as of July 31, 2024 ) Top Ten Holdings (% of net assets) NexPoint Residential Trust, Inc. 5.1 UMH Properties, Inc. 5.0 Apartment Investment and Management Co. 4.8 Elme Communities 4.7 CareTrust REIT, Inc. 4.7 Welltower, Inc. 4.7 Veris Residential, Inc. 4.7 Sun Communities, Inc. 4.7 Equity LifeStyle Properties, Inc. 4.6 BRT Apartments Corp. 4.6 |
| 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. |
| Shareholder Report, Holdings (Details) | Jul. 31, 2024 |
| Intelligent Real Estate ETF | BXP, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Intelligent Real Estate ETF | Kimco Realty Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Intelligent Real Estate ETF | Crown Castle, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Intelligent Real Estate ETF | Prologis, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Intelligent Real Estate ETF | Gaming and Leisure Properties, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Intelligent Real Estate ETF | American Tower Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Intelligent Real Estate ETF | SBA Communications Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Intelligent Real Estate ETF | VICI Properties, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Intelligent Real Estate ETF | Weyerhaeuser Co. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Intelligent Real Estate ETF | Omega Healthcare Investors, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Intelligent Real Estate ETF | Diversified [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| Intelligent Real Estate ETF | Office Property [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.80% |
| Intelligent Real Estate ETF | Warehouse & Industry [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| Intelligent Real Estate ETF | Apartments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.60% |
| Intelligent Real Estate ETF | Shopping Centers [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.40% |
| Intelligent Real Estate ETF | Hotels [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.10% |
| Intelligent Real Estate ETF | Storage [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| Intelligent Real Estate ETF | Health Care [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.30% |
| Intelligent Real Estate ETF | Manufactured Homes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| Intelligent Real Estate ETF | Single Tenant [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Intelligent Real Estate ETF | Regional Malls [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| Intelligent Real Estate ETF | Cash and Cash Equivalents [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.00%) |
| Residential REIT ETF | NexPoint Residential Trust, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| Residential REIT ETF | UMH Properties, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| Residential REIT ETF | Apartment Investment and Management Co. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Residential REIT ETF | Elme Communities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Residential REIT ETF | CareTrust REIT, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Residential REIT ETF | Welltower, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Residential REIT ETF | Veris Residential, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Residential REIT ETF | Sun Communities, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Residential REIT ETF | Equity LifeStyle Properties, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Residential REIT ETF | BRT Apartments Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Residential REIT ETF | Diversified [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| Residential REIT ETF | Apartments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 62.80% |
| Residential REIT ETF | Storage [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| Residential REIT ETF | Health Care [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.30% |
| Residential REIT ETF | Manufactured Homes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.40% |
| Residential REIT ETF | Cash Equivalents [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
