Class K [Member] Annual Fund Operating Expenses - Class K - BLACKROCK GLOBAL ALLOCATION FUND, INC. |
Apr. 30, 2026 |
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| Prospectus [Line Items] | ||||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | June 30, 2028 | |||||||||
| Class K | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Management Fees (as a percentage of Assets) | 0.75% | [1],[2] | ||||||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||||||
| Component1 Other Expenses | 0.03% | |||||||||
| Component2 Other Expenses | [3] | |||||||||
| Other Expenses (as a percentage of Assets): | 0.03% | [3] | ||||||||
| Acquired Fund Fees and Expenses | 0.02% | [4] | ||||||||
| Expenses (as a percentage of Assets) | 0.80% | [4] | ||||||||
| Fee Waiver or Reimbursement | (0.03%) | [1],[2] | ||||||||
| Net Expenses (as a percentage of Assets) | 0.77% | [1],[2] | ||||||||
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