| Shareholder Report | 6 Months Ended |
| Sep. 30, 2024 USD ($) holding |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| 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 |
| C000241425 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Bridges Capital Tactical ETF |
| Class Name | Bridges Capital Tactical ETF |
| Trading Symbol | BDGS |
| Security Exchange Name | NASDAQ |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Bridges Capital Tactical ETF (the “Fund”) for the period of April 1, 2024 to September 30, 2024 (the “Period”). You can find additional information about the Fund at www.bridgesetf.com. You can also request this information by contacting us at (215) 330-4476. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information Phone Number | (215) 330-4476 |
| Additional Information Website | www.bridgesetf.com |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE PERIOD? (based on a hypothetical $10,000 investment) COST OF $10,000 INVESTMENT COST PAID AS A PERCENTAGE OF $10,000 INVESTMENT $41 0.78% |
| Expenses Paid, Amount | $ 41 |
| Expense Ratio, Percent | 0.78% |
| Line Graph [Table Text Block] | HOW DID THE FUND PERFORM FOR THE PERIOD? |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS Since Inception (9/19/2023) MarketDesk Focused U.S. Dividend ETF - NAV 15.69% MarketDesk Focused U.S. Dividend ETF - Market 15.86% S&P 500 25.81% 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.marketdeskindices.com for more recent performance information. |
| Performance Inception Date | Sep. 19, 2023 |
| Net Assets | $ 23,779,706 |
| Holdings Count | holding | 9 |
| Advisory Fees Paid, Amount | $ 86,812 |
| Investment Company, Portfolio Turnover | 40% |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of Period End) Net Assets $23,779,706 Advisory Fees $86,812 # of Portfolio Holdings 9 Portfolio Turnover Rate* 40% *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] | ASSET WEIGHTING (as a % of Net Assets) U.S. Treasury Bills 62.3% Exchange Traded Funds 33.4% Common Stock 4.1% Cash & Cash Equivalents 0.2% TOP HOLDINGS (as a % of Net Assets) United States Treasury Bill 4.73%, 12/05/2024 24.4% Alpha Architect 1-3 Month Box ETF 23.3% United States Treasury Bill 5.07%, 11/14/2024 14.7% United States Treasury Bill 5.05%, 10/31/2024 12.9% United States Treasury Bill 5.25%, 10/03/2024 10.3% SPDR S&P 500 ETF Trust 10.1% Chevron Corp. 2.1% PepsiCo, Inc. 2.0% |
