v3.26.1
Shareholder Report, Holdings (Details)
Apr. 30, 2026
C000178763 [Member] | Fifth Third Bancorp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000178763 [Member] | Sumitomo Mitsui Trust Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000178763 [Member] | JPMorgan Chase And Co [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000178763 [Member] | The Hartford Insurance Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000178763 [Member] | Popular Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000178763 [Member] | NN Group NV [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000178763 [Member] | Columbia Banking System Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000178763 [Member] | Morgan Stanley [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000178763 [Member] | Citigroup Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000178763 [Member] | Citizens Financial Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000178763 [Member] | Industrial REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000178763 [Member] | Consumer finance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000178763 [Member] | Banks [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 52.00%
C000178763 [Member] | Insurance Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.40%
C000178763 [Member] | Financial Services Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000178763 [Member] | Short term investments and other [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000178763 [Member] | Capital markets [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 22.90%
C000173131 [Member] | Fifth Third Bancorp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000173131 [Member] | Sumitomo Mitsui Trust Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000173131 [Member] | JPMorgan Chase And Co [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000173131 [Member] | The Hartford Insurance Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000173131 [Member] | Popular Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000173131 [Member] | NN Group NV [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000173131 [Member] | Columbia Banking System Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000173131 [Member] | Morgan Stanley [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000173131 [Member] | Citigroup Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000173131 [Member] | Citizens Financial Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000173131 [Member] | Industrial REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000173131 [Member] | Consumer finance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000173131 [Member] | Banks [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 52.00%
C000173131 [Member] | Insurance Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.40%
C000173131 [Member] | Financial Services Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000173131 [Member] | Short term investments and other [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000173131 [Member] | Capital markets [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 22.90%
C000001811 [Member] | Fifth Third Bancorp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000001811 [Member] | Sumitomo Mitsui Trust Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000001811 [Member] | JPMorgan Chase And Co [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000001811 [Member] | The Hartford Insurance Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000001811 [Member] | Popular Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000001811 [Member] | NN Group NV [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000001811 [Member] | Columbia Banking System Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000001811 [Member] | Morgan Stanley [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000001811 [Member] | Citigroup Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000001811 [Member] | Citizens Financial Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000001811 [Member] | Industrial REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000001811 [Member] | Consumer finance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000001811 [Member] | Banks [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 52.00%
C000001811 [Member] | Insurance Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.40%
C000001811 [Member] | Financial Services Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000001811 [Member] | Short term investments and other [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000001811 [Member] | Capital markets [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 22.90%
C000001809 [Member] | Fifth Third Bancorp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000001809 [Member] | Sumitomo Mitsui Trust Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000001809 [Member] | JPMorgan Chase And Co [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000001809 [Member] | The Hartford Insurance Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000001809 [Member] | Popular Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000001809 [Member] | NN Group NV [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000001809 [Member] | Columbia Banking System Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000001809 [Member] | Morgan Stanley [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000001809 [Member] | Citigroup Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000001809 [Member] | Citizens Financial Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000001809 [Member] | Industrial REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000001809 [Member] | Consumer finance [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000001809 [Member] | Banks [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 52.00%
C000001809 [Member] | Insurance Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.40%
C000001809 [Member] | Financial Services Sector [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000001809 [Member] | Short term investments and other [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000001809 [Member] | Capital markets [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 22.90%
C000001813 [Member] | Fifth Third Bancorp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000001813 [Member] | Popular Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000001813 [Member] | Citizens Financial Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000001813 [Member] | Pinnacle Financial Partners Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000001813 [Member] | Huntington Bancshares Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000001813 [Member] | M And T Bank Corp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000001813 [Member] | Regions Financial Corp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000001813 [Member] | WSFS Financial Corp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000001813 [Member] | U S Bancorp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000001813 [Member] | East West Bancorp Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000001813 [Member] | Banks [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 99.80%
C000001813 [Member] | Short term investments and other [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000001815 [Member] | Fifth Third Bancorp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000001815 [Member] | Popular Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000001815 [Member] | Citizens Financial Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000001815 [Member] | Pinnacle Financial Partners Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000001815 [Member] | Huntington Bancshares Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000001815 [Member] | M And T Bank Corp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000001815 [Member] | Regions Financial Corp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000001815 [Member] | WSFS Financial Corp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000001815 [Member] | U S Bancorp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000001815 [Member] | East West Bancorp Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000001815 [Member] | Banks [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 99.80%
C000001815 [Member] | Short term investments and other [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000173132 [Member] | Fifth Third Bancorp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000173132 [Member] | Popular Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000173132 [Member] | Citizens Financial Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000173132 [Member] | Pinnacle Financial Partners Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000173132 [Member] | Huntington Bancshares Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000173132 [Member] | M And T Bank Corp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000173132 [Member] | Regions Financial Corp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000173132 [Member] | WSFS Financial Corp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000173132 [Member] | U S Bancorp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000173132 [Member] | East West Bancorp Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000173132 [Member] | Banks [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 99.80%
C000173132 [Member] | Short term investments and other [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000178764 [Member] | Fifth Third Bancorp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000178764 [Member] | Popular Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000178764 [Member] | Citizens Financial Group Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000178764 [Member] | Pinnacle Financial Partners Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000178764 [Member] | Huntington Bancshares Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000178764 [Member] | M And T Bank Corp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000178764 [Member] | Regions Financial Corp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000178764 [Member] | WSFS Financial Corp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000178764 [Member] | U S Bancorp [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000178764 [Member] | East West Bancorp Inc [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000178764 [Member] | Banks [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 99.80%
C000178764 [Member] | Short term investments and other [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%