Shareholder Report |
6 Months Ended | |||||||||
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Apr. 30, 2026
USD ($)
Holdings
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| Shareholder Report [Line Items] | ||||||||||
| Document Type | N-CSRS | |||||||||
| Amendment Flag | false | |||||||||
| Registrant Name | ETF Opportunities Trust | |||||||||
| Entity Central Index Key | 0001771146 | |||||||||
| Entity Investment Company Type | N-1A | |||||||||
| Document Period End Date | Apr. 30, 2026 | |||||||||
| T-REX 2X Long CIFR Daily Target ETF [Member] | ||||||||||
| Shareholder Report [Line Items] | ||||||||||
| Fund Name | T-REX 2X Long CIFR Daily Target ETF | |||||||||
| Class Name | T-REX 2X Long CIFR Daily Target ETF | |||||||||
| Trading Symbol | CIFU | |||||||||
| Security Exchange Name | CboeBZX | |||||||||
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the T-REX 2X Long CIFR Daily Target ETF for the period of November 21, 2025 (Inception) to April 30, 2026. | |||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |||||||||
| Additional Information [Text Block] | You can find additional information about the Fund at www.rexshares.com/cifu/. You can also request this information by contacting us at (833) 759-6110. | |||||||||
| Additional Information Phone Number | (833) 759-6110 | |||||||||
| Additional Information Website | www.rexshares.com/cifu/ | |||||||||
| Expenses [Text Block] | What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment)
¹ Costs are for the period of November 21, 2025 to April 30, 2026. Costs for a full semi-annual period would be higher. ² Annualized. |
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| Expenses Paid, Amount | $ 61 | [1] | ||||||||
| Expense Ratio, Percent | 1.50% | [2] | ||||||||
| Expenses Short Period Footnote [Text Block] | Costs are for the period of November 21, 2025 to April 30, 2026. Costs for a full semi-annual period would be higher. | |||||||||
| Net Assets | $ 14,663,730 | |||||||||
| Holdings Count | Holdings | 3 | |||||||||
| Advisory Fees Paid, Amount | $ 61,649 | |||||||||
| Investment Company, Portfolio Turnover | 0.00% | |||||||||
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of April 30, 2026)
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| Holdings [Text Block] | What did the Fund invest in? (% of Net Assets as of April 30, 2026) Market Exposure Total Return Swap Contracts: 200% “Market Exposure” includes the values of total investments (including the contract value of any derivatives) and excludes any short-term investments. Portfolio Composition
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| Exposure Basis Explanation [Text Block] | Market Exposure Total Return Swap Contracts: 200% “Market Exposure” includes the values of total investments (including the contract value of any derivatives) and excludes any short-term investments. |
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