| Form N-CSR Cover | 12 Months Ended |
| Sep. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | EA Series Trust |
| Entity Central Index Key | 0001592900 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Sep. 30, 2024 |
| Shareholder Report | 12 Months Ended |
| Sep. 30, 2024 USD ($) holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | EA Series Trust |
| Entity Central Index Key | 0001592900 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Sep. 30, 2024 |
| C000211567 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Freedom 100 Emerging Markets ETF |
| Class Name | Freedom 100 Emerging Markets ETF |
| Trading Symbol | FRDM |
| Security Exchange Name | CboeBZX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the TBG Dividend Focus ETF (the “Fund”) for the period of November 6, 2023 to July 31, 2024 (the “Period”). |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information Phone Number | (215) 330-4476 |
| Additional Information Website | www.freedometfs.com/frdm |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE PERIOD? COST OF $10,000 INVESTMENT COST PAID AS A PERCENTAGE OF $10,000 INVESTMENT $56 0.49% |
| Expenses Paid, Amount | $ 56 |
| Expense Ratio, Percent | 0.49% |
| Factors Affecting Performance [Text Block] | WHAT FACTORS INFLUENCED PERFORMANCE FOR THE PERIOD? |
| Line Graph [Table Text Block] | PERFORMANCE OF A HYPOTHETICAL $10,000 INVESTMENT |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS 1 Year 5 Year Since Inception (5/22/2019) Freedom 100 Emerging Markets ETF - NAV 29.81% 9.56% 9.32% Freedom 100 Emerging Markets Index 30.46% 9.83% 9.61% Solactive GBS Emerging Markets Large & Mid Cap Index 25.79% 6.04% 6.02% The Fund’s past performance is not a good predictor of how the Fund will perform in the future. The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares. Visit www.freedometfs.com/frdm for more recent performance information. |
| Performance Inception Date | May 22, 2019 |
| Net Assets | $ 847,996,380 |
| Holdings Count | holding | 114 |
| Advisory Fees Paid, Amount | $ 3,731,552 |
| Investment Company, Portfolio Turnover | 20% |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of Period End) Net Assets $847,996,380 Portfolio Turnover Rate* 20% # of Portfolio Holdings 114 Advisory Fees Paid $3,731,552 *Excludes impact of in-kind transactions. |
| Holdings [Text Block] | SECTOR WEIGHTING Information Technology 32.5% Financials 24.9% Materials 11.2% Consumer Discretionary 10.8% Consumer Staples 6.4% Communication Services 5.1% Industrials 4.5% Health Care 2.2% Utilities 1.4% Real Estate 0.6% Energy 0.2% Cash & Cash Equivalents 0.2% TOP 10 HOLDINGS Taiwan Semiconductor Manufacturing Co. Ltd. - ADR 10.4% Samsung Electronics Co. Ltd. 5.7% Hon Hai Precision Industry Co. Ltd. 5.0% Bank Polska Kasa Opieki SA 3.5% Sociedad Quimica y Minera de Chile SA - ADR 3.3% MediaTek, Inc. 3.2% SK Hynix, Inc. 3.0% Banco de Chile 2.8% Latam Airlines Group SA 2.5% Falabella SA 2.3% |
| Material Fund Change Name [Text Block] | Material Fund Changes There have been no material changes of the Fund since May 31, 2024 For more complete information, you may review the Fund’s next prospectus, which we expect to be available at etf.sparklinecapital.com. |
| Shareholder Report, Line Graph (Details) - USD ($) | Sep. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | May 22, 2019 |
| C000211567 [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Account Value | $ 16,119 | $ 14,919 | $ 12,417 | $ 12,627 | $ 10,486 | $ 14,301 | $ 13,611 | $ 13,643 | $ 10,236 | $ 7,793 | $ 10,211 | $ 10,000 |
| Freedom 100 Emerging Markets Index ($16,352) [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Account Value | 16,352 | 15,128 | 12,534 | 12,736 | 10,535 | 14,429 | 13,712 | 13,759 | 10,320 | 7,821 | 10,230 | 10,000 |
| Solactive GBS Emerging Markets Large & Mid Cap Index ($13,677) [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Account Value | $ 13,677 | $ 12,026 | $ 10,873 | $ 10,905 | $ 9,681 | $ 12,165 | $ 13,155 | $ 13,649 | $ 11,229 | $ 8,689 | $ 10,201 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 60 Months Ended | 64 Months Ended |
| Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | |
| C000211567 [Member] | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 29.81% | 9.56% | 9.32% |
| Solactive GBS Emerging Markets Large & Mid Cap Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 25.79% | 6.04% | 6.02% |
| Freedom 100 Emerging Markets Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 30.46% | 9.83% | 9.61% |
| Shareholder Report, Holdings (Details) - C000211567 [Member] | Sep. 30, 2024 |
| Taiwan Semiconductor Manufacturing Co. Ltd. - ADR [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.40% |
| Samsung Electronics Co. Ltd. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| Hon Hai Precision Industry Co. Ltd. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| Bank Polska Kasa Opieki SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| Sociedad Quimica y Minera de Chile SA - ADR [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| MediaTek, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| SK Hynix, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Banco de Chile [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| Latam Airlines Group SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Falabella SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 32.50% |
| Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.90% |
| Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.20% |
| Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.80% |
| Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Cash & Cash Equivalents [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| TAIWAN | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.60% |
| CHILE | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.60% |
| KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.30% |
| POLAND | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14% |
| SOUTH AFRICA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| BRAZIL | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| THAILAND | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| MALAYSIA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| INDONESIA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| MEXICO | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| PHILIPPINES | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Cash & Cash Equivalents [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
