Class K [Member] Expense Example - Class K - BlackRock U.S. Insights Long/Short Equity Fund - Class K	May 31, 2025 USD ($)
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 159
Expense Example, with Redemption, 3 Years	978
Expense Example, with Redemption, 5 Years	1,816
Expense Example, with Redemption, 10 Years	$ 3,990

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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