| Form N-CSR Cover | 12 Months Ended |
| Jun. 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 | Jun. 30, 2024 |
| Shareholder Report | 12 Months Ended | 120 Months Ended |
| Jun. 30, 2024 USD ($) holding | Jun. 30, 2024 USD ($) 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 | Jun. 30, 2024 | |
| C000237259 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | EA Bridgeway Blue Chip ETF | |
| Class Name | EA Bridgeway Blue Chip ETF | |
| Trading Symbol | BBLU | |
| Security Exchange Name | NYSEArca | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the EA Bridgeway Blue Chip ETF (the “Fund”) for the period of July 1, 2023 to June 30, 2024 (the “Period”). | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information Phone Number | (215) 882-9983 | |
| Additional Information Website | www.bridgewayetfs.com/bblu/ | |
| 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 $17 0.15% | |
| Expenses Paid, Amount | $ 17 | |
| Expense Ratio, Percent | 0.15% | |
| Factors Affecting Performance [Text Block] | WHAT FACTORS INFLUENCED PERFORMANCE FOR THE PERIOD? The Fund returned 24.75% (NAV) for the Period vs 24.56% for the S&P 500 Index. During the period, markets responded positively to strong corporate earnings, resilient economic conditions, and Federal Reserve policy. | |
| Line Graph [Table Text Block] | PERFORMANCE OF HYPOTHETICAL | |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS 1 Year 5 Year 10 Year EA Bridgeway Blue Chip ETF - NAV 24.75% 15.29% 13.08% EA Bridgeway Blue Chip ETF - Market 24.64% 15.18% 13.02% S&P 500 Index 24.56% 15.05% 12.86% 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. The Fund converted from a mutual fund to an ETF on October 14, 2022. The Fund has adopted the mutual fund’s prior performance for the periods before the conversion. Visit www.bridgewayetfs.com/bblu/ for more recent performance information. | |
| Net Assets | $ 181,370,007 | $ 181,370,007 |
| Holdings Count | holding | 38 | 38 |
| Advisory Fees Paid, Amount | $ 204,867 | |
| Investment Company, Portfolio Turnover | 600% | |
| C000238839 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | EA Bridgeway Omni Small-Cap Value ETF | |
| Class Name | EA Bridgeway Omni Small-Cap Value ETF | |
| Trading Symbol | BSVO | |
| Security Exchange Name | NASDAQ | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the EA Bridgeway Omni Small-Cap Value ETF (the “Fund”) for the period of July 1, 2023 to June 30, 2024 (the “Period”). | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information Phone Number | (215) 882-9983 | |
| Additional Information Website | www.bridgewayetfs.com/bsvo/ | |
| 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 $51 0.47% | |
| Expenses Paid, Amount | $ 51 | |
| Expense Ratio, Percent | 0.47% | |
| Factors Affecting Performance [Text Block] | WHAT FACTORS INFLUENCED PERFORMANCE FOR THE PERIOD? The Fund returned 16.27% (NAV) for the Period vs 23.13% for the Russell 3000 Index. During the period, markets responded positively to strong corporate earnings, resilient economic conditions, and Federal Reserve policy. Markets were led by stocks with larger market capitalization. | |
| Line Graph [Table Text Block] | PERFORMANCE OF HYPOTHETICAL | |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS 1 Year 5 Year 10 Year EA Bridgeway Omni Small Cap Value ETF - NAV 16.27% 10.87% 6.81% EA Bridgeway Omni Small Cap Value ETF - Market 15.87% 10.82% 6.79% Russell 3000 Index 23.13% 14.14% 12.15% Russell 2000 Value Index 10.90% 7.07% 6.23% The Russell 3000 Index is provided as a broad measure of market performance. The Russell 2000 Value Index is provided as a measure of the Fund’s investment strategy and universe. 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. The Fund converted from a mutual fund to an ETF on March 10, 2023. The Fund has adopted the mutual fund’s prior performance for the periods before the conversion. Visit www.bridgewayetfs.com/bsvo/ for more recent performance information. | |
| Net Assets | $ 1,272,957,860 | $ 1,272,957,860 |
| Holdings Count | holding | 605 | 605 |
| Advisory Fees Paid, Amount | $ 4,812,357 | |
| Investment Company, Portfolio Turnover | 6% |
| Shareholder Report, Line Graph (Details) - USD ($) | Jun. 30, 2024 | Jun. 30, 2022 | Jun. 30, 2020 | Jun. 30, 2018 | Jun. 30, 2016 | Jun. 30, 2014 | Jun. 30, 2012 | Jun. 30, 2008 | Jun. 30, 2004 |
| C000237259 [Member] | |||||||||
| Account Value [Line Items] | |||||||||
| Account Value | $ 100,645 | $ 51,136 | $ 33,198 | $ 20,111 | $ 16,213 | $ 14,893 | |||
| C000238839 [Member] | |||||||||
| Account Value [Line Items] | |||||||||
| Account Value | 31,777 | $ 26,176 | 14,418 | $ 22,711 | 15,620 | $ 16,440 | |||
| Russell 3000 Index [Member] | |||||||||
| Account Value [Line Items] | |||||||||
| Account Value | 52,869 | 36,097 | 29,070 | 25,039 | 18,408 | 16,797 | |||
| S&P 500 Index [Member] | |||||||||
| Account Value [Line Items] | |||||||||
| Account Value | 93,902 | 50,090 | 31,294 | $ 18,641 | $ 16,020 | $ 13,239 | |||
| Russell 2000 Value Index [Member] | |||||||||
| Account Value [Line Items] | |||||||||
| Account Value | $ 28,607 | $ 24,334 | $ 16,774 | $ 21,679 | $ 15,352 | $ 15,637 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 60 Months Ended | 120 Months Ended |
| Jun. 30, 2024 | Jun. 30, 2024 | Jun. 30, 2024 | |
| C000237259 [Member] | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 24.75% | 15.29% | 13.08% |
| C000238839 [Member] | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 16.27% | 10.87% | 6.81% |
| Standard & Poor's 500 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 24.56% | 15.05% | 12.86% |
| Russell 3000 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 23.13% | 14.14% | 12.15% |
| Russell 2000 Value Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 10.90% | 7.07% | 6.23% |
| Shareholder Report, Holdings (Details) | Jun. 30, 2024 |
| C000237259 [Member] | Eli Lilly & Co. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000237259 [Member] | Nvidia Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000237259 [Member] | Meta Platforms, Inc. - Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000237259 [Member] | Microsoft Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000237259 [Member] | JPMorgan Chase & Co. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000237259 [Member] | Broadcom, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000237259 [Member] | Apple, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000237259 [Member] | Visa, Inc. - Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000237259 [Member] | Qualcomm, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000237259 [Member] | Bank of America Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000237259 [Member] | Information Technology [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 25.30% |
| C000237259 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.10% |
| C000237259 [Member] | Communication Services [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.20% |
| C000237259 [Member] | Health Care [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.80% |
| C000237259 [Member] | Consumer Discretionary [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.80% |
| C000237259 [Member] | Consumer Staples [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.80% |
| C000237259 [Member] | Energy Service [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000237259 [Member] | Industrials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| C000237259 [Member] | Cash & Cash Equivalents [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000238839 [Member] | SkyWest, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000238839 [Member] | Golden Ocean Group Ltd. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000238839 [Member] | United States Cellular Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000238839 [Member] | Warrior Met Coal, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000238839 [Member] | Teekay Tankers Ltd. - Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000238839 [Member] | Gulfport Energy Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000238839 [Member] | Tronox Holdings PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000238839 [Member] | M/I Homes, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000238839 [Member] | Telephone and Data Systems, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000238839 [Member] | TTM Technologies, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000238839 [Member] | Information Technology [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000238839 [Member] | Financials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.20% |
| C000238839 [Member] | Communication Services [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000238839 [Member] | Health Care [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000238839 [Member] | Consumer Discretionary [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14% |
| C000238839 [Member] | Consumer Staples [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000238839 [Member] | Energy Service [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12% |
| C000238839 [Member] | Industrials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.70% |
| C000238839 [Member] | Cash & Cash Equivalents [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000238839 [Member] | Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000238839 [Member] | Real Estate [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
