v3.26.1
Shareholder Report, Holdings (Details)
Apr. 30, 2026
C000109500 | Africa  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000109500 | Asia  
Holdings [Line Items]  
Percent of Net Asset Value 18.40%
C000109500 | Europe  
Holdings [Line Items]  
Percent of Net Asset Value 63.60%
C000109500 | North America  
Holdings [Line Items]  
Percent of Net Asset Value 11.30%
C000109500 | Oceania  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000109500 | South America  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000109500 | Country Other Net Line  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000109503 | Africa  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000109503 | Asia  
Holdings [Line Items]  
Percent of Net Asset Value 18.40%
C000109503 | Europe  
Holdings [Line Items]  
Percent of Net Asset Value 63.60%
C000109503 | North America  
Holdings [Line Items]  
Percent of Net Asset Value 11.30%
C000109503 | Oceania  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000109503 | South America  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000109503 | Country Other Net Line  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000109501 | Africa  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000109501 | Asia  
Holdings [Line Items]  
Percent of Net Asset Value 18.40%
C000109501 | Europe  
Holdings [Line Items]  
Percent of Net Asset Value 63.60%
C000109501 | North America  
Holdings [Line Items]  
Percent of Net Asset Value 11.30%
C000109501 | Oceania  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000109501 | South America  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000109501 | Country Other Net Line  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000109502 | Africa  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000109502 | Asia  
Holdings [Line Items]  
Percent of Net Asset Value 18.40%
C000109502 | Europe  
Holdings [Line Items]  
Percent of Net Asset Value 63.60%
C000109502 | North America  
Holdings [Line Items]  
Percent of Net Asset Value 11.30%
C000109502 | Oceania  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000109502 | South America  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000109502 | Country Other Net Line  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000217896 | Africa  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000217896 | Asia  
Holdings [Line Items]  
Percent of Net Asset Value 18.20%
C000217896 | Europe  
Holdings [Line Items]  
Percent of Net Asset Value 63.20%
C000217896 | North America  
Holdings [Line Items]  
Percent of Net Asset Value 11.30%
C000217896 | Oceania  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000217896 | South America  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000217896 | Country Other Net Line  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000217897 | Africa  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000217897 | Asia  
Holdings [Line Items]  
Percent of Net Asset Value 18.20%
C000217897 | Europe  
Holdings [Line Items]  
Percent of Net Asset Value 63.20%
C000217897 | North America  
Holdings [Line Items]  
Percent of Net Asset Value 11.30%
C000217897 | Oceania  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000217897 | South America  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000217897 | Country Other Net Line  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%