v3.26.1
Shareholder Report
 12 Months Ended
Jun. 30, 2026
USD ($)
holding
Jun. 30, 2025
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, 2026  
Shareholder Report Annual or Semi-Annual annual shareholder report  
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, 2025 to June 30, 2026 (the “Period”). You can find additional information about the Fund at https://bridgewayetfs.com/bblu/. You can also request this information by contacting us at (215) 330-4476. For information regarding your Fund shares or account, including account balances, transactions, or distributions, please contact your financial intermediary.
  
Additional Information [Text Block]
Availability of Additional Information
For additional information about the Fund, including its prospectus, financial information, holdings, and proxy information, visit https://bridgewayetfs.com/bblu/. You can also request information by calling (215) 330-4476.
Householding
Householding is an option available to certain investors of the Fund. Householding is a method of delivery, based on the preference of the individual investor, in which a single copy of certain shareholder documents can be delivered to investors who share the same address, even if their accounts are registered under different names. Householding for the Fund is available through certain broker-dealers. If you are interested in enrolling in householding and receiving a single copy of prospectuses and other shareholder documents or you are currently enrolled in householding and wish to change your householding status, please contact your broker-dealer.
  
Additional Information Phone Number (215) 330-4476  
Additional Information Website https://bridgewayetfs.com/bblu/  
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PERIOD?
(based on a hypothetical $10,000 investment)
COST OF $10,000 INVESTMENTCOST PAID AS A PERCENTAGE OF $10,000 INVESTMENT
$170.15%
  
Expenses Paid, Amount $ 17  
Expense Ratio, Percent 0.15%  
Factors Affecting Performance [Text Block]  
WHAT FACTORS INFLUENCED PERFORMANCE FOR THE PERIOD?

The Fund returned 21.62% (NAV) for the Period vs 22.32% for the S&P 500 Index.
The Fund’s focus on mega-cap stocks contributed positively to returns, as the largest stocks in the benchmark generally outperformed its smaller constituents. The Fund’s underweighting in Information Technology and overweighting in Financials contributed negatively to relative returns to the S&P 500 index. The Fund’s holdings in the Health Care sector contributed positively to relative returns to the S&P 500 Index.
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]
7
  
Average Annual Return [Table Text Block]
PERFORMANCE
One YearFive YearTen Year
EA Bridgeway Blue Chip ETF - NAV21.62%14.62%15.59%
S&P 500 Index 22.32%13.41%15.51%
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 https://bridgewayetfs.com/bblu/ for more recent performance information.
  
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.  
Net Assets $ 429,620,766  
Holdings Count | holding 38  
Advisory Fees Paid, Amount $ 530,749  
Investment Company, Portfolio Turnover 13.00%  
Additional Fund Statistics [Text Block]
 KEY FUND STATISTICS (as of Period End)
Net Assets$429,620,766Portfolio Turnover Rate*13%
# of Portfolio Holdings38Fund Advisory Fees Paid$530,749
*Portfolio turnover is not annualized and is calculated without regard to short-term securities having a maturity of less than one year. Excludes impact of in-kind transactions.
  
Holdings [Text Block]
SECTOR WEIGHTING
(as a % of Net Assets)
Information Technology28.4%
Financials16.2%
Health Care14.3%
Communication Services13.8%
Consumer Discretionary9.9%
Consumer Staples9.9%
Energy4.9%
Industrials2.5%
Cash and Cash Equivalents0.1%

TOP 10 HOLDINGS
(as a % of Net Assets)
Advanced Micro Devices, Inc.4.0%
Broadcom, Inc.4.0%
NVIDIA Corp.3.8%
Jpmorgan Chase & Co.3.7%
UnitedHealth Group, Inc.3.6%
Apple, Inc.3.4%
Cisco Systems, Inc.3.3%
Eli Lilly & Co.3.0%
Johnson & Johnson2.8%
Bank of America Corp.2.5%
  
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, 2025 to June 30, 2026 (the “Period”). You can find additional information about the Fund at https://bridgewayetfs.com/bsvo/. You can also request this information by contacting us at (215) 330-4476. For information regarding your Fund shares or account, including account balances, transactions, or distributions, please contact your financial intermediary.
  
Additional Information [Text Block]
Availability of Additional Information
For additional information about the Fund, including its prospectus, financial information, holdings, and proxy information, visit https://bridgewayetfs.com/bsvo/. You can also request information by calling (215) 330-4476.
Householding
Householding is an option available to certain investors of the Fund. Householding is a method of delivery, based on the preference of the individual investor, in which a single copy of certain shareholder documents can be delivered to investors who share the same address, even if their accounts are registered under different names. Householding for the Fund is available through certain broker-dealers. If you are interested in enrolling in householding and receiving a single copy of prospectuses and other shareholder documents or you are currently enrolled in householding and wish to change your householding status, please contact your broker-dealer.
  
Additional Information Phone Number (215) 330-4476  
Additional Information Website https://bridgewayetfs.com/bsvo/  
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PERIOD? (based on a hypothetical $10,000 investment)
COST OF $10,000 INVESTMENTCOST PAID AS A PERCENTAGE OF $10,000 INVESTMENT
$550.45%
  
Expenses Paid, Amount $ 55  
Expense Ratio, Percent 0.45%  
Factors Affecting Performance [Text Block]  
WHAT FACTORS INFLUENCED PERFORMANCE FOR THE PERIOD?
The Fund returned 45.40% (NAV) for the Period vs 22.82% for the Russell 3000 Index and 43.01% for the Russell 2000 Value Index.
The Fund’s small-cap focus contributed positively to returns relative to the Russell 3000 Index. The Fund’s focus on smaller market capitalization stocks within the small-cap value universe contributed positively to returns relative to the Russell 2000 Value Index during the Period. By design, the Fund does not invest in REITs and Utilities, which also contributed positively as REITs and Utilities performed poorly. The Fund’s focus on deeper value stocks across multiple valuation metrics contributed negatively to returns relative to the Russell 2000 Value Index during the Period.
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]
6
  
Average Annual Return [Table Text Block]
PERFORMANCE
One YearFive YearTen Year
EA Bridgeway Omni Small-Cap Value ETF - NAV45.40%10.93%11.61%
Russell 3000 Index22.82%12.31%15.06%
Russell 2000 Value Index43.01%8.23%10.89%
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 sale 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 https://bridgewayetfs.com/bsvo/ for more recent performance information.
  
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 sale of Fund shares.  
Net Assets $ 2,387,541,005  
Holdings Count | holding 638  
Advisory Fees Paid, Amount $ 8,504,318  
Investment Company, Portfolio Turnover 19.00%  
Additional Fund Statistics [Text Block]
 KEY FUND STATISTICS (as of Period End)
Net Assets$2,387,541,005Portfolio Turnover Rate*19%
# of Portfolio Holdings638Fund Advisory Fees Paid$8,504,318
*Portfolio turnover is not annualized and is calculated without regard to short-term securities having a maturity of less than one year. Excludes impact of in-kind transactions.
  
Holdings [Text Block]

TOP 10 SECTORS (as a % of Net Assets)
Financials35.3%
Consumer Discretionary15.9%
Energy13.6%
Industrials12.7%
Information Technology4.9%
Communication Services4.7%
Materials4.7%
Consumer Staples4.1%
Health Care3.7%
Real Estate0.3%
TOP 10 HOLDINGS (as a % of Net Assets)
Viasat, Inc.1.1%
Victoria's Secret & Co.1.0%
Sphere Entertainment Co.0.8%
Enova International, Inc.0.8%
Bread Financial Holdings, Inc.0.8%
Tutor Perini Corp.0.7%
Benchmark Electronics, Inc.0.7%
Callaway Golf Co.0.7%
WesBanco, Inc.0.7%
BankUnited, Inc.0.7%