| Form N-CSR Cover | 12 Months Ended |
| Oct. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | ETF Opportunities Trust |
| Entity Central Index Key | 0001771146 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Oct. 31, 2024 |
| Shareholder Report | 12 Months Ended | |
| Oct. 31, 2024 USD ($) Holdings | ||
| Shareholder Report [Line Items] | ||
| Document Type | N-CSR | |
| Amendment Flag | false | |
| Registrant Name | ETF Opportunities Trust | |
| Entity Central Index Key | 0001771146 | |
| Entity Investment Company Type | N-1A | |
| Document Period End Date | Oct. 31, 2024 | |
| IDX DYNAMIC INNOVATION ETF | ||
| Shareholder Report [Line Items] | ||
| Fund Name | IDX Dynamic Innovation ETF | |
| Class Name | IDX Dynamic Innovation ETF | |
| Trading Symbol | DYNI | |
| Security Exchange Name | NASDAQ | |
| 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 at https://idxshares.com/dyni/ (844)-456-4545 | |
| Additional Information Phone Number | (844)-456-4545 | |
| Additional Information Website | https://idxshares.com/dyni/ | |
| Expenses [Text Block] | What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment) Fund Cost of a $10,000 Investment Costs paid as a percentage of a $10,000 investment IDX Dynamic Innovation ETF $ 76 0.75 * Amount shown reflects the expenses of the Fund for the current fiscal period from November 13, 2023 to October 31, 2024. Expenses would be higher if the Fund had been in operations for a full year. ** Annualized | |
| Expenses Paid, Amount | $ 76 | [1] |
| Expense Ratio, Percent | 0.75% | [2] |
| Expenses Short Period Footnote [Text Block] | Amount shown reflects the expenses of the Fund for the current fiscal period from November 13, 2023 to October 31, 2024. Expenses would be higher if the Fund had been in operations for a full year. | |
| Factors Affecting Performance [Text Block] | What factors influence performance? Performance Contributors Blockchain and Digital Transformation Stocks: Exposure to blockchain-related companies (e.g., BLOK) has significantly boosted performance; leading to periods of substantial outperformance versus broad-based benchmarks. Broad Technology and Utilities in August: Strategic allocations to technology and utilities ETFs outperformed benchmarks in August, with the Fund gaining 4.2% versus 2.23% for the Russell 1000 Index – demonstrating part of the utility of being able to rotate into defensive sectors. Performance Detractors Defensive Sectors in Q2: The Fund’s allocation to defensive sectors like utilities has detracted from returns; underperforming during market rallies led mainly by large-cap technology stocks. Underweight in Large-Cap Tech: While the Russell 1000 Index surged, driven by concentrated growth in a handful of mega-cap tech stocks, the fund’s broader innovation focus and defensive positioning limited its ability to capture these gains effectively. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not a good predictor of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | How did the Fund perform since inception? The chart reflects a hypothetical $10,000 investment. The chart uses total return NAV performance and assumes reinvestment of dividends and capital gains. Fund expenses, including management fees, were deducted. IDX Dynamic Inno: Russell 1000 Index: MSCI USA Defensive Sectors Index: 11/13/2023 10000 10000 10000 4/30/2024 10579.735 11443 10463.681 10/31/2024 10999.505 12952 11244.18 | |
| Average Annual Return [Table Text Block] | Annual Performance Since Inception ( November 13, 2023 IDX Dynamic Innovation ETF - NAV 9.99% Russell 1000 Index* 29.52% MSCI USA Defensive Sectors Index** 12.44% | |
| Performance Inception Date | Nov. 13, 2023 | |
| 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] | For updated performance information visit https://idxshares.com/dyni/. | |
| Net Assets | $ 29,963,070 | |
| Holdings Count | Holdings | 4 | |
| Advisory Fees Paid, Amount | $ 235,460 | |
| Investment Company, Portfolio Turnover | 694.03% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of October 31, 2024) Net Assets $29,963,070 Number of Holdings 4 Total Advisory Fee $235,460 Annual Portfolio Turnover 694.03% | |
| Holdings [Text Block] | Sector Breakdown (% of net assets) INFORMATION TECHNOLOGY 65.67% UTILITIES 33.69% OTHER ASSETS IN EXCESS OF LIABILITIES 0.64% | |
| Largest Holdings [Text Block] | Top Holdings (% of net assets) Utilities Select Sector SPDR ETF 33.69% Global X Artificial Intelligence & Technology ETF 26.60% iShares U.S. Technology ETF 24.49% Amplify Transformational Data Sharing ETF 14.58% | |
| IDX DYNAMIC FIXED INCOME ETF | ||
| Shareholder Report [Line Items] | ||
| Fund Name | IDX Dynamic Fixed Income ETF | |
| Class Name | IDX Dynamic Fixed Income ETF | |
| Trading Symbol | DYFI | |
| Security Exchange Name | NASDAQ | |
| 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 at https://idxshares.com/dyfi/ (844)-456-4545 | |
| Additional Information Phone Number | (844)-456-4545 | |
| Additional Information Website | https://idxshares.com/dyfi/ | |
| Expenses [Text Block] | What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment) Fund Cost of a $10,000 Investment Costs paid as a percentage of a $10,000 investment IDX Dynamic Fixed Income ETF $ 56 0.70 * Amount shown reflects the expenses of the Fund for the current fiscal period from January 10, 2024 to October 31, 2024. Expenses would be higher if the Fund had been in operations for a full year. ** Annualized | |
| Expenses Paid, Amount | $ 56 | [3] |
| Expense Ratio, Percent | 0.70% | [4] |
| Expenses Short Period Footnote [Text Block] | Amount shown reflects the expenses of the Fund for the current fiscal period from January 10, 2024 to October 31, 2024. Expenses would be higher if the Fund had been in operations for a full year. | |
| Factors Affecting Performance [Text Block] | What factors influence performance? Performance Contributors Credit-Related Instruments: Consistent positive contributions came from exposure to investment-grade and high-yield credit, particularly in September when high-yield ETFs (e.g., HYG, ANGL) added approximately 1% to performance. Mortgage-Backed Securities: Allocations to mortgage-backed securities contributed positively, helping the fund generate solid returns while maintaining lower duration. Performance Detractors Short Positions in Long-Dated Treasuries: The fund’s ability to take positions that profit from rising interest rates in long-dated U.S. Treasuries, historically a strength of the strategy, detracted from performance in 2024 as rates movements did not favor this sub-strategy. Long-Duration Treasuries in August: Early exposure to long-duration Treasury ETFs in August led to underperformance, contributing to a (0.46)% return versus a 1.06% gain for the Bloomberg US Aggregate Bond Index that month. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not a good predictor of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | How did the Fund perform since inception? The chart reflects a hypothetical $10,000 investment. The chart uses total return NAV performance and assumes reinvestment of dividends and capital gains. Fund expenses, including management fees, were deducted. IDX Dynamic Fixed Income Bloomberg US Aggregate Bond Index 1/10/2024 10000 10000 4/30/2024 9888 10286.501 10/31/2024 9773.4243 10833.186 | |
| Average Annual Return [Table Text Block] | Annual Performance Since Inception ( January 10, 2024 IDX Dynamic Fixed Income ETF - NAV (2.24)% Bloomberg US Aggregate Bond Index* 8.33% | |
| Performance Inception Date | Jan. 10, 2024 | |
| 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] | For updated performance information visit https://idxshares.com/dyfi/. | |
| Net Assets | $ 28,150,252 | |
| Holdings Count | Holdings | 5 | |
| Advisory Fees Paid, Amount | $ 147,475 | |
| Investment Company, Portfolio Turnover | 901.78% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of October 31, 2024) Net Assets $28,150,252 Number of Holdings 5 Total Advisory Fee $147,475 Annual Portfolio Turnover 901.78% | |
| Holdings [Text Block] | Sector Breakdown (% of net assets) HIGH YIELD 44.75% GOVERNMENT 42.54% CORPORATE 12.23% OTHER ASSETS IN EXCESS OF LIABILITIES 0.48% | |
| Largest Holdings [Text Block] | Top Ten Holdings (% of net assets) SPDR Bloomberg 1-3 Month T-Bill ETF 39.55% iShares iBoxx High Yield Corporate Bond ETF 31.99% PIMCO 0-5 Year High Yield Corporate Bond Index ETF 12.76% iShares iBoxx $ Investment Grade Bond ETF 12.23% ProShares UltraShort 20+ Year Treasury ETF 2.99% | |
| [1] Amount shown reflects the expenses of the Fund for the current fiscal period from November 13, 2023 to October 31, 2024. Expenses would be higher if the Fund had been in operations for a full year. Amount shown reflects the expenses of the Fund for the current fiscal period from January 10, 2024 to October 31, 2024. Expenses would be higher if the Fund had been in operations for a full year. | ||
| Shareholder Report, Line Graph (Details) - USD ($) | 4 Months Ended | 6 Months Ended | 10 Months Ended | 12 Months Ended | ||
| Jan. 10, 2024 | Nov. 13, 2023 | Apr. 30, 2024 | Apr. 30, 2024 | Oct. 31, 2024 | Oct. 31, 2024 | |
| IDX DYNAMIC INNOVATION ETF | ||||||
| Account Value [Line Items] | ||||||
| Accumulated Value | $ 10,000 | $ 10,579.735 | $ 10,999.505 | |||
| IDX DYNAMIC FIXED INCOME ETF | ||||||
| Account Value [Line Items] | ||||||
| Accumulated Value | $ 10,000 | $ 9,888 | $ 9,773.4243 | |||
| Russell 1000 Index | ||||||
| Account Value [Line Items] | ||||||
| Accumulated Value | 10,000 | 11,443 | 12,952 | |||
| MSCI USA Defensive Sectors Index | ||||||
| Account Value [Line Items] | ||||||
| Accumulated Value | $ 10,000 | $ 10,463.681 | $ 11,244.18 | |||
| Bloomberg US Aggregate Bond Index | ||||||
| Account Value [Line Items] | ||||||
| Accumulated Value | $ 10,000 | $ 10,286.501 | $ 10,833.186 |
| Shareholder Report, Average Annual Return (Details) | 10 Months Ended | 12 Months Ended | |
| Oct. 31, 2024 | Oct. 31, 2024 | ||
| IDX DYNAMIC INNOVATION ETF | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 9.99% | ||
| IDX DYNAMIC FIXED INCOME ETF | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | (2.24%) | ||
| Russell 1000 Index | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | [1] | 29.52% | |
| MSCI USA Defensive Sectors Index | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | [2] | 12.44% | |
| Bloomberg US Aggregate Bond Index | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | [3] | 8.33% | |
| [1]The Russell 1000® Index measures the performance of the large-cap segment of the US equity universe. It includes approximately 1,000 largest US stocks, representing 93% of investable US equities by market capitalization.[2]The MSCI USA Defensive Sectors Index is based on MSCI USA Index, its parent index and captures large and mid-cap segments of the US market. The index is designed to reflect the performance of the opportunity set of global defensive companies across various GICS® sectors. All constituent securities from Consumer Staples, Energy, Healthcare and Utilities are included in the Index.[3]Bloomberg U.S. Aggregate Bond Index tracks the performance of U.S. dollar denominated investment grade corporate bond debt, government debt, mortage-backed securities and asset-back securities issued in the U.S. domestic bond market. One cannot invest directly in an index. Sector allocations are subject to change. Unlike the Fund’s returns, the Index does not reflect any fees or expenses. | |||
| Shareholder Report, Holdings (Details) | Oct. 31, 2024 |
| IDX DYNAMIC INNOVATION ETF | Utilities Select Sector SPDR ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.69% |
| IDX DYNAMIC INNOVATION ETF | Global X Artificial Intelligence & Technology ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.60% |
| IDX DYNAMIC INNOVATION ETF | iShares U.S. Technology ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.49% |
| IDX DYNAMIC INNOVATION ETF | Amplify Transformational Data Sharing ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.58% |
| IDX DYNAMIC INNOVATION ETF | INFORMATION TECHNOLOGY [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 65.67% |
| IDX DYNAMIC INNOVATION ETF | UTILITIES [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.69% |
| IDX DYNAMIC INNOVATION ETF | OTHER ASSETS IN EXCESS OF LIABILITIES [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.64% |
| IDX DYNAMIC FIXED INCOME ETF | SPDR Bloomberg 1-3 Month T-Bill ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 39.55% |
| IDX DYNAMIC FIXED INCOME ETF | iShares iBoxx High Yield Corporate Bond ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 31.99% |
| IDX DYNAMIC FIXED INCOME ETF | PIMCO 0-5 Year High Yield Corporate Bond Index ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.76% |
| IDX DYNAMIC FIXED INCOME ETF | iShares iBoxx $ Investment Grade Bond ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.23% |
| IDX DYNAMIC FIXED INCOME ETF | ProShares UltraShort 20+ Year Treasury ETF [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.99% |
| IDX DYNAMIC FIXED INCOME ETF | OTHER ASSETS IN EXCESS OF LIABILITIES [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.48% |
| IDX DYNAMIC FIXED INCOME ETF | HIGH YIELD [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 44.75% |
| IDX DYNAMIC FIXED INCOME ETF | Government [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 42.54% |
| IDX DYNAMIC FIXED INCOME ETF | Corporate Segment [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.23% |
