Investor A C Institutional and Class R [Member] Annual Fund Operating Expenses - Investor A, C, Institutional and Class R - BLACKROCK CAPITAL APPRECIATION FUND, INC. |
May 31, 2026 |
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|---|---|---|---|---|---|---|---|---|
| Prospectus [Line Items] | ||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | June 30, 2028 | |||||||
| Investor A Shares | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.62% | [1] | ||||||
| Distribution and Service (12b-1) Fees | 0.25% | |||||||
| Other Expenses (as a percentage of Assets): | 0.11% | [2] | ||||||
| Expenses (as a percentage of Assets) | 0.98% | [2] | ||||||
| Fee Waiver or Reimbursement | (0.06%) | [1],[3] | ||||||
| Net Expenses (as a percentage of Assets) | 0.92% | [1],[3] | ||||||
| Investor C Shares | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.62% | [1] | ||||||
| Distribution and Service (12b-1) Fees | 1.00% | |||||||
| Other Expenses (as a percentage of Assets): | 0.20% | [2] | ||||||
| Expenses (as a percentage of Assets) | 1.82% | [2] | ||||||
| Fee Waiver or Reimbursement | (0.15%) | [1],[3] | ||||||
| Net Expenses (as a percentage of Assets) | 1.67% | [1],[3] | ||||||
| Institutional Shares | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.62% | [1] | ||||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||||
| Other Expenses (as a percentage of Assets): | 0.11% | [2] | ||||||
| Expenses (as a percentage of Assets) | 0.73% | [2] | ||||||
| Fee Waiver or Reimbursement | (0.06%) | [1],[3] | ||||||
| Net Expenses (as a percentage of Assets) | 0.67% | [1],[3] | ||||||
| Class R Shares | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.62% | [1] | ||||||
| Distribution and Service (12b-1) Fees | 0.50% | |||||||
| Other Expenses (as a percentage of Assets): | 0.21% | [2] | ||||||
| Expenses (as a percentage of Assets) | 1.33% | [2] | ||||||
| Fee Waiver or Reimbursement | (0.16%) | [1],[3] | ||||||
| Net Expenses (as a percentage of Assets) | 1.17% | [1],[3] | ||||||
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