v3.26.1
Shareholder Report, Holdings (Details)
Apr. 30, 2026
C000085634 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00% [1]
C000085634 [Member] | Others [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.60% [1],[2]
C000085634 [Member] | Energy Refining And Marketing [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10% [1]
C000085634 [Member] | Media [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50% [1]
C000085634 [Member] | Materials Diversified Chemicals [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20% [1]
C000085634 [Member] | Commercial Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20% [1]
C000085634 [Member] | Insurance Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30% [1]
C000085634 [Member] | Oil And Gas Production And Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 17.30% [1]
C000085634 [Member] | Building Products [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.60% [1]
C000085634 [Member] | Metals And Mining [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.20% [1]
C000085634 [Member] | Diversified Holding Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.60% [1]
C000085634 [Member] | Transportation And Logistics [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.00% [1]
C000085634 [Member] | Capital Equipment [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.80% [1]
C000085634 [Member] | Banks [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.40% [1]
C000085634 [Member] | Automotive Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.50% [1]
C000085634 [Member] | Unclassified Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.50% [1],[3]
C000085634 [Member] | ITALY  
Holdings [Line Items]  
Percent of Net Asset Value 3.10% [1]
C000085634 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 14.10% [1]
C000085634 [Member] | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 7.90% [1]
C000085634 [Member] | CHILE  
Holdings [Line Items]  
Percent of Net Asset Value 3.30% [1]
C000085634 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Net Asset Value 3.90% [1]
C000085634 [Member] | HONG KONG  
Holdings [Line Items]  
Percent of Net Asset Value 4.90% [1]
C000085634 [Member] | SINGAPORE  
Holdings [Line Items]  
Percent of Net Asset Value 4.50% [1]
C000085634 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 13.90% [1]
C000085634 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 30.30% [1]
C000085634 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Net Asset Value 4.10% [1]
C000085634 [Member] | Short-Term Investments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.30% [1]
C000085634 [Member] | Other Assets less Liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30% [1]
C000085634 [Member] | Purchased Options [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.20% [1]
C000003885 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00% [4]
C000003885 [Member] | Others [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.60% [4],[5]
C000003885 [Member] | Energy Refining And Marketing [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10% [4]
C000003885 [Member] | Media [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50% [4]
C000003885 [Member] | Materials Diversified Chemicals [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20% [4]
C000003885 [Member] | Commercial Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20% [4]
C000003885 [Member] | Insurance Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30% [4]
C000003885 [Member] | Oil And Gas Production And Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 17.30% [4]
C000003885 [Member] | Building Products [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.60% [4]
C000003885 [Member] | Metals And Mining [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.20% [4]
C000003885 [Member] | Diversified Holding Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.60% [4]
C000003885 [Member] | Transportation And Logistics [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.00% [4]
C000003885 [Member] | Capital Equipment [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.80% [4]
C000003885 [Member] | Banks [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.40% [4]
C000003885 [Member] | Automotive Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.50% [4]
C000003885 [Member] | Unclassified Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.50% [4],[6]
C000003885 [Member] | ITALY  
Holdings [Line Items]  
Percent of Net Asset Value 3.10% [4]
C000003885 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 14.10% [4]
C000003885 [Member] | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 7.90% [4]
C000003885 [Member] | CHILE  
Holdings [Line Items]  
Percent of Net Asset Value 3.30% [4]
C000003885 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Net Asset Value 3.90% [4]
C000003885 [Member] | HONG KONG  
Holdings [Line Items]  
Percent of Net Asset Value 4.90% [4]
C000003885 [Member] | SINGAPORE  
Holdings [Line Items]  
Percent of Net Asset Value 4.50% [4]
C000003885 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 13.90% [4]
C000003885 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 30.30% [4]
C000003885 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Net Asset Value 4.10% [4]
C000003885 [Member] | Short-Term Investments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.30% [4]
C000003885 [Member] | Other Assets less Liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30% [4]
C000003885 [Member] | Purchased Options [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.20% [4]
C000199334 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00% [7]
C000199334 [Member] | Others [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.60% [7],[8]
C000199334 [Member] | Energy Refining And Marketing [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10% [7]
C000199334 [Member] | Media [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50% [7]
C000199334 [Member] | Materials Diversified Chemicals [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20% [7]
C000199334 [Member] | Commercial Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20% [7]
C000199334 [Member] | Insurance Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30% [7]
C000199334 [Member] | Oil And Gas Production And Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 17.30% [7]
C000199334 [Member] | Building Products [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.60% [7]
C000199334 [Member] | Metals And Mining [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.20% [7]
C000199334 [Member] | Diversified Holding Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.60% [7]
C000199334 [Member] | Transportation And Logistics [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.00% [7]
C000199334 [Member] | Capital Equipment [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.80% [7]
C000199334 [Member] | Banks [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.40% [7]
C000199334 [Member] | Automotive Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.50% [7]
C000199334 [Member] | Unclassified Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.50% [7],[9]
C000199334 [Member] | ITALY  
Holdings [Line Items]  
Percent of Net Asset Value 3.10% [7]
C000199334 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 14.10% [7]
C000199334 [Member] | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 7.90% [7]
C000199334 [Member] | CHILE  
Holdings [Line Items]  
Percent of Net Asset Value 3.30% [7]
C000199334 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Net Asset Value 3.90% [7]
C000199334 [Member] | HONG KONG  
Holdings [Line Items]  
Percent of Net Asset Value 4.90% [7]
C000199334 [Member] | SINGAPORE  
Holdings [Line Items]  
Percent of Net Asset Value 4.50% [7]
C000199334 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 13.90% [7]
C000199334 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 30.30% [7]
C000199334 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Net Asset Value 4.10% [7]
C000199334 [Member] | Short-Term Investments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.30% [7]
C000199334 [Member] | Other Assets less Liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30% [7]
C000199334 [Member] | Purchased Options [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.20% [7]
C000199335 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00% [10]
C000199335 [Member] | Consulting And Information Technology Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.20% [10]
C000199335 [Member] | Home Building Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.60% [10]
C000199335 [Member] | Banks And Thrifts [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00% [10]
C000199335 [Member] | Insurance And Reinsurance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.70% [10]
C000199335 [Member] | U S Real Estate Operating Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.50% [10]
C000199335 [Member] | Industrial Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.80% [10]
C000199335 [Member] | Energy Refining And Marketing [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.80% [10]
C000199335 [Member] | Materials Diversified Chemicals [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.50% [10]
C000199335 [Member] | Oil And Gas Production And Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.10% [10]
C000199335 [Member] | Building Products [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.70% [10]
C000199335 [Member] | Automotive Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50% [10]
C000199335 [Member] | Unclassified Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.30% [10],[11]
C000199335 [Member] | Industrial Equipment [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00% [10]
C000199335 [Member] | Metals Manufacturing [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50% [10]
C000199335 [Member] | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.60% [10]
C000199335 [Member] | Financial Services Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.00% [10]
C000199335 [Member] | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.70% [10]
C000199335 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 98.20% [10]
C000199335 [Member] | Short-Term Investments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.70% [10]
C000199335 [Member] | Other Assets less Liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.80% [10]
C000003886 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00% [12]
C000003886 [Member] | Consulting And Information Technology Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.20% [12]
C000003886 [Member] | Home Building Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.60% [12]
C000003886 [Member] | Banks And Thrifts [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00% [12]
C000003886 [Member] | Insurance And Reinsurance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.70% [12]
C000003886 [Member] | U S Real Estate Operating Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.50% [12]
C000003886 [Member] | Industrial Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.80% [12]
C000003886 [Member] | Energy Refining And Marketing [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.80% [12]
C000003886 [Member] | Materials Diversified Chemicals [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.50% [12]
C000003886 [Member] | Oil And Gas Production And Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.10% [12]
C000003886 [Member] | Building Products [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.70% [12]
C000003886 [Member] | Automotive Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50% [12]
C000003886 [Member] | Unclassified Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.30% [12],[13]
C000003886 [Member] | Industrial Equipment [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00% [12]
C000003886 [Member] | Metals Manufacturing [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50% [12]
C000003886 [Member] | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.60% [12]
C000003886 [Member] | Financial Services Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.00% [12]
C000003886 [Member] | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.70% [12]
C000003886 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 98.20% [12]
C000003886 [Member] | Short-Term Investments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.70% [12]
C000003886 [Member] | Other Assets less Liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.80% [12]
C000085635 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00% [14]
C000085635 [Member] | Consulting And Information Technology Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.20% [14]
C000085635 [Member] | Home Building Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.60% [14]
C000085635 [Member] | Banks And Thrifts [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00% [14]
C000085635 [Member] | Insurance And Reinsurance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.70% [14]
C000085635 [Member] | U S Real Estate Operating Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.50% [14]
C000085635 [Member] | Industrial Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.80% [14]
C000085635 [Member] | Energy Refining And Marketing [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.80% [14]
C000085635 [Member] | Materials Diversified Chemicals [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.50% [14]
C000085635 [Member] | Oil And Gas Production And Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.10% [14]
C000085635 [Member] | Building Products [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.70% [14]
C000085635 [Member] | Automotive Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50% [14]
C000085635 [Member] | Unclassified Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.30% [14],[15]
C000085635 [Member] | Industrial Equipment [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00% [14]
C000085635 [Member] | Metals Manufacturing [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50% [14]
C000085635 [Member] | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.60% [14]
C000085635 [Member] | Financial Services Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.00% [14]
C000085635 [Member] | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.70% [14]
C000085635 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 98.20% [14]
C000085635 [Member] | Short-Term Investments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.70% [14]
C000085635 [Member] | Other Assets less Liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.80% [14]
C000085636 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00% [16]
C000085636 [Member] | Non U S Real Estate Operating Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.80% [16]
C000085636 [Member] | Non U S Real Estate Investment Trusts [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.10% [16]
C000085636 [Member] | Non U S Homebuilder [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10% [16]
C000085636 [Member] | Non U S Real Estate Consulting Management [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.90% [16]
C000085636 [Member] | U S Real Estate Operating Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.40% [16]
C000085636 [Member] | Industrial Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20% [16]
C000085636 [Member] | Hospitality [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50% [16]
C000085636 [Member] | Industrial Distribution [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.10% [16]
C000085636 [Member] | Forest Products And Paper [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20% [16]
C000085636 [Member] | Consulting Management [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.20% [16]
C000085636 [Member] | Mortgage Finance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.20% [16]
C000085636 [Member] | U S Real Estate Investment Trusts [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.50% [16]
C000085636 [Member] | U S Homebuilder [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 13.20% [16]
C000085636 [Member] | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 8.50% [16]
C000085636 [Member] | HONG KONG  
Holdings [Line Items]  
Percent of Net Asset Value 9.40% [16]
C000085636 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 11.90% [16]
C000085636 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 65.00% [16]
C000085636 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Net Asset Value 2.20% [16]
C000085636 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Net Asset Value 2.50% [16]
C000085636 [Member] | Short-Term Investments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00% [16]
C000085636 [Member] | Other Assets less Liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.60% [16]
C000085636 [Member] | Purchased Options [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [16],[17]
C000003887 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00% [18]
C000003887 [Member] | Non U S Real Estate Operating Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.80% [18]
C000003887 [Member] | Non U S Real Estate Investment Trusts [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.10% [18]
C000003887 [Member] | Non U S Homebuilder [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10% [18]
C000003887 [Member] | Non U S Real Estate Consulting Management [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.90% [18]
C000003887 [Member] | U S Real Estate Operating Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.40% [18]
C000003887 [Member] | Industrial Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20% [18]
C000003887 [Member] | Hospitality [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50% [18]
C000003887 [Member] | Industrial Distribution [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.10% [18]
C000003887 [Member] | Forest Products And Paper [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20% [18]
C000003887 [Member] | Consulting Management [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.20% [18]
C000003887 [Member] | Mortgage Finance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.20% [18]
C000003887 [Member] | U S Real Estate Investment Trusts [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.50% [18]
C000003887 [Member] | U S Homebuilder [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 13.20% [18]
C000003887 [Member] | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 8.50% [18]
C000003887 [Member] | HONG KONG  
Holdings [Line Items]  
Percent of Net Asset Value 9.40% [18]
C000003887 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 11.90% [18]
C000003887 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 65.00% [18]
C000003887 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Net Asset Value 2.20% [18]
C000003887 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Net Asset Value 2.50% [18]
C000003887 [Member] | Short-Term Investments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00% [18]
C000003887 [Member] | Other Assets less Liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.60% [18]
C000003887 [Member] | Purchased Options [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [18],[19]
C000199336 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00% [20]
C000199336 [Member] | Non U S Real Estate Operating Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.80% [20]
C000199336 [Member] | Non U S Real Estate Investment Trusts [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.10% [20]
C000199336 [Member] | Non U S Homebuilder [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10% [20]
C000199336 [Member] | Non U S Real Estate Consulting Management [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.90% [20]
C000199336 [Member] | U S Real Estate Operating Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.40% [20]
C000199336 [Member] | Industrial Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20% [20]
C000199336 [Member] | Hospitality [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50% [20]
C000199336 [Member] | Industrial Distribution [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.10% [20]
C000199336 [Member] | Forest Products And Paper [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20% [20]
C000199336 [Member] | Consulting Management [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.20% [20]
C000199336 [Member] | Mortgage Finance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.20% [20]
C000199336 [Member] | U S Real Estate Investment Trusts [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.50% [20]
C000199336 [Member] | U S Homebuilder [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 13.20% [20]
C000199336 [Member] | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 8.50% [20]
C000199336 [Member] | HONG KONG  
Holdings [Line Items]  
Percent of Net Asset Value 9.40% [20]
C000199336 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 11.90% [20]
C000199336 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 65.00% [20]
C000199336 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Net Asset Value 2.20% [20]
C000199336 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Net Asset Value 2.50% [20]
C000199336 [Member] | Short-Term Investments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00% [20]
C000199336 [Member] | Other Assets less Liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.60% [20]
C000199336 [Member] | Purchased Options [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.00% [20],[21]
C000226241 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00% [22]
C000226241 [Member] | Others [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 23.30% [22],[23]
C000226241 [Member] | Non U S Real Estate Operating Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 62.90% [22]
C000226241 [Member] | Non U S Real Estate Investment Trusts [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 21.80% [22]
C000226241 [Member] | Non U S Homebuilder [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.30% [22]
C000226241 [Member] | Non U S Real Estate Consulting Management [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00% [22]
C000226241 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 8.70% [22]
C000226241 [Member] | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 5.00% [22]
C000226241 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Net Asset Value 5.00% [22]
C000226241 [Member] | HONG KONG  
Holdings [Line Items]  
Percent of Net Asset Value 18.20% [22]
C000226241 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 10.20% [22]
C000226241 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 4.70% [22]
C000226241 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Net Asset Value 5.20% [22]
C000226241 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Net Asset Value 9.20% [22]
C000226241 [Member] | IRELAND  
Holdings [Line Items]  
Percent of Net Asset Value 5.30% [22]
C000226241 [Member] | MEXICO  
Holdings [Line Items]  
Percent of Net Asset Value 5.10% [22]
C000226241 [Member] | Short-Term Investments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.70% [22]
C000226241 [Member] | Other Assets less Liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.30% [22]
C000226242 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 100.00% [24]
C000226242 [Member] | Others [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 23.30% [24],[25]
C000226242 [Member] | Non U S Real Estate Operating Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 62.90% [24]
C000226242 [Member] | Non U S Real Estate Investment Trusts [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 21.80% [24]
C000226242 [Member] | Non U S Homebuilder [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.30% [24]
C000226242 [Member] | Non U S Real Estate Consulting Management [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00% [24]
C000226242 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 8.70% [24]
C000226242 [Member] | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 5.00% [24]
C000226242 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Net Asset Value 5.00% [24]
C000226242 [Member] | HONG KONG  
Holdings [Line Items]  
Percent of Net Asset Value 18.20% [24]
C000226242 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 10.20% [24]
C000226242 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 4.70% [24]
C000226242 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Net Asset Value 5.20% [24]
C000226242 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Net Asset Value 9.20% [24]
C000226242 [Member] | IRELAND  
Holdings [Line Items]  
Percent of Net Asset Value 5.30% [24]
C000226242 [Member] | MEXICO  
Holdings [Line Items]  
Percent of Net Asset Value 5.10% [24]
C000226242 [Member] | Short-Term Investments [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.70% [24]
C000226242 [Member] | Other Assets less Liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.30% [24]
[1] (% of Net Assets)
[2] Includes Ireland, Bermuda, South Korea, Mexico and Philippines.
[3] Includes Non-U.S. Real Estate Operating Companies, Consumer Products and Brokerages & Exchanges.
[4] (% of Net Assets)
[5] Includes Ireland, Bermuda, South Korea, Mexico and Philippines.
[6] Includes Non-U.S. Real Estate Operating Companies, Consumer Products and Brokerages & Exchanges.
[7] (% of Net Assets)
[8] Includes Ireland, Bermuda, South Korea, Mexico and Philippines.
[9] Includes Non-U.S. Real Estate Operating Companies, Consumer Products and Brokerages & Exchanges.
[10]
(% of Net Assets)
[11]
Includes Commercial Services, Information Technology and Real Estate Services.
[12] (% of Net Assets)
[13]
Includes Commercial Services, Information Technology and Real Estate Services.
[14] (% of Net Assets)
[15] Includes Commercial Services, Information Technology and Real Estate Services.
[16]
(% of Net Assets)
[17]
Amount less than 0.01%.
[18]
(% of Net Assets)
[19]
Amount less than 0.01%.
[20] (% of Net Assets)
[21]
Amount less than 0.01%.
[22] (% of Net Assets)
[23] Includes Netherlands, Luxembourg, Singapore, Belgium, Thailand, Spain and Philippines.
[24] (% of Net Assets)
[25] Includes Netherlands, Luxembourg, Singapore, Belgium, Thailand, Spain and Philippines.