Investor A, C and Institutional [Member] Investment Strategy - Investor A, C and Institutional - BLACKROCK GLOBAL DIVIDEND PORTFOLIO	May 31, 2026
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies of the Fund
Strategy Narrative [Text Block]	Under normal circumstances, the Fund will invest at least 80% of its net assets in dividend-paying equity securities and at least 40% of its assets outside of the United States (unless market conditions are not deemed favorable by Fund management, in which case the Fund would invest at least 30% of its assets outside of the United States). Investments in derivatives are counted toward the Fund’s 80% policy to the extent that they provide investment exposure to the securities included within that policy or to one or more market risk factors associated with such securities. For purposes of the Fund’s 80% policy, dividend-paying equity securities are equity securities of companies that pay out a portion of their profits to shareholders of such securities on a periodic basis (i.e., at least once within the company’s latest fiscal year). The Fund will primarily invest in common stock, preferred stock and non-convertible preferred stock. The Fund may invest in securities of non-U.S. issuers that can be U.S. dollar based or non-U.S. dollar based. The Fund may invest in securities of companies of any market capitalization, but intends to invest primarily in securities of large capitalization companies. The combination of equity securities will be varied from time to time both with respect to types of securities and markets in response to changing market and economic trends. The Fund may invest in shares of companies through initial public offerings (“IPOs”) and “new issues.” The Fund may also purchase securities convertible into common and preferred stock. The Fund’s 80% policy is non-fundamental and may not be changed without 60 days’ prior notice to shareholders. The Fund may invest up to 20% of its net assets in global fixed-income securities, including corporate bonds, U.S. Government debt securities, non-U.S. Government and supranational debt securities (an example of such an entity is the International Bank for Reconstruction and Development (the “World Bank”)), asset-backed securities, mortgage-backed securities, corporate loans, emerging market debt securities and non-investment grade debt securities (high yield or junk bonds). Investment in fixed-income securities will be made on an opportunistic basis. The Fund may invest in fixed-income securities of any duration or maturity. The Fund has no geographic limits in where it may invest and has no specific policy on the number of different countries in which it will invest. The Fund may invest in both developed and emerging markets. The Fund may emphasize foreign securities when Fund management expects these investments to outperform U.S. securities. The Fund may use derivatives, including options, futures, swaps and forward contracts both to seek to increase the return of the Fund or to hedge (or protect) the value of its assets against adverse movements in currency exchange rates, interest rates and movements in the securities markets. The Fund may enter into currency transactions on a hedged or unhedged basis in order to seek total return. The Fund may use indexed and inverse securities. Under normal circumstances, the Fund anticipates it will allocate a substantial amount (at least 40% or more — unless market conditions are not deemed favorable by Fund management, in which case the Fund would invest at least 30%) of its total assets in foreign securities, which may include securities (i) of foreign government issuers, (ii) of issuers organized or located outside the United States, (iii) of issuers which primarily trade in a market located outside the United States, or (iv) of issuers doing a substantial amount of business outside the United States, which the Fund considers to be companies that derive at least 50% of their revenue or profits from business outside the United States or have at least 50% of their sales or assets outside the United States. The Fund will allocate its assets among various regions and countries, including the United States (but in no less than three different countries). For temporary defensive purposes the Fund may deviate very substantially from this allocation. The Fund may engage in active and frequent trading of portfolio securities to achieve its principal investment strategies.

Under normal circumstances, the Fund will invest at least 80% of its net assets in dividend-paying equity securities and at least 40% of its assets outside of the United States (unless market conditions are not deemed favorable by Fund management, in which case the Fund would invest at least 30% of its assets outside of the United States). Investments in derivatives are counted toward the Fund’s 80% policy to the extent that they provide investment exposure to the securities included within that policy or to one or more market risk factors associated with such securities. For purposes of the Fund’s 80% policy, dividend-paying equity securities are equity securities of companies that pay out a portion of their profits to shareholders of such securities on a periodic basis (i.e., at least once within the company’s latest fiscal year). The Fund will primarily invest in common stock, preferred stock and non-convertible preferred stock. The Fund may invest in securities of non-U.S. issuers that can be U.S. dollar based or non-U.S. dollar based. The Fund may invest in securities of companies of any market capitalization, but intends to invest primarily in securities of large capitalization companies. The combination of equity securities will be varied from time to time both with respect to types of securities and markets in response to changing market and economic trends. The Fund may invest in shares of companies through initial public offerings (“IPOs”) and “new issues.” The Fund may also purchase securities convertible into common and preferred stock.

The Fund may invest up to 20% of its net assets in global fixed-income securities, including corporate bonds, U.S. Government debt securities, non-U.S. Government and supranational debt securities (an example of such an entity is the International Bank for Reconstruction and Development (the “World Bank”)), asset-backed securities, mortgage-backed securities, corporate loans, emerging market debt securities and non-investment grade debt securities (high yield or junk bonds). Investment in fixed-income securities will be made on an opportunistic basis. The Fund may invest in fixed-income securities of any duration or maturity.

The Fund has no geographic limits in where it may invest and has no specific policy on the number of different countries in which it will invest. The Fund may invest in both developed and emerging markets. The Fund may emphasize foreign securities when Fund management expects these investments to outperform U.S. securities. The Fund may use derivatives, including options, futures, swaps and forward contracts both to seek to increase the return of the Fund or to hedge (or protect) the value of its assets against adverse movements in currency exchange rates, interest rates and movements in the securities markets. The Fund may enter into currency transactions on a hedged or unhedged basis in order to seek total return. The Fund may use indexed and inverse securities.

30%) of its total assets in foreign securities, which may include securities (i) of foreign government issuers, (ii) of issuers organized or located outside the United States, (iii) of issuers which primarily trade in a market located outside the United States, or (iv) of issuers doing a substantial amount of business outside the United States, which the Fund considers to be companies that derive at least 50% of their revenue or profits from business outside the United States or have at least 50% of their sales or assets outside the United States. The Fund will allocate its assets among various regions and countries, including the United States (but in no less than three different countries). For temporary defensive purposes the Fund may deviate very substantially from this allocation.