Shareholder Report |
6 Months Ended | ||||||||
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Jun. 30, 2026
USD ($)
Holding
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| Shareholder Report [Line Items] | |||||||||
| Document Type | N-CSRS | ||||||||
| Amendment Flag | false | ||||||||
| Registrant Name | Capitol Series Trust | ||||||||
| Entity Central Index Key | 0001587551 | ||||||||
| Entity Investment Company Type | N-1A | ||||||||
| Document Period End Date | Jun. 30, 2026 | ||||||||
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report | ||||||||
| C000258312 | |||||||||
| Shareholder Report [Line Items] | |||||||||
| Fund Name | Sterling Capital Enhanced Core Bond ETF | ||||||||
| Class Name | Sterling Capital Enhanced Core Bond ETF | ||||||||
| Trading Symbol | SCEC | ||||||||
| Security Exchange Name | CboeBZX | ||||||||
| Expenses [Text Block] | What were the Fund’s costs for the last six months?(based on a hypothetical $10,000 investment)
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| Expenses Paid, Amount | $ 20 | ||||||||
| Expense Ratio, Percent | 0.39% | ||||||||
| AssetsNet | $ 584,808,094 | ||||||||
| Holdings Count | Holding | 339 | ||||||||
| Advisory Fees Paid, Amount | $ 1,037,300 | ||||||||
| InvestmentCompanyPortfolioTurnover | 76.00% | ||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
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| Holdings [Text Block] | Asset Weighting (% of total investments) ![]() ![]() |
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| Material Fund Change [Text Block] | Material Fund ChangesOn August 28, 2025, Guardian Capital Group Limited (“Guardian”), the indirect parent company of Sterling Capital Management LLC (the “Adviser”), announced that it had entered into a definitive agreement with Desjardins Global Asset Management Inc. (“DGAM”) to be taken private pursuant to an arrangement whereby DGAM would purchase all of the issued and outstanding shares of Guardian, other than shares held by certain shareholders who entered into equity rollover agreements (the “Transaction”). The closing of the Transaction occurred on March 23, 2026. The Adviser is now an indirect, wholly-owned subsidiary of Desjardins and is anticipated to continue to operate as a standalone entity. To provide continuity and stability, the Adviser’s team of management and senior professionals will continue servicing the Adviser’s clients, including the Fund. At a meeting held on October 23, 2025, the Board of Trustees of Capitol Series Trust approved an Agreement and Plan of Reorganization of the Fund into a fund of the same name, a newly created series of Sterling Capital Funds (the “Reorganization”). The Reorganization was originally expected to occur in March 2026, but was postponed. Shareholders approved the Reorganization at a special meeting held on August 18, 2026, and the Reorganization is expected to occur in September 2026. |