v3.25.2
Shareholder Report, Holdings (Details)
Jun. 30, 2025
C000102979 | United Mexican States  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000102979 | Republic of Indonesia  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000102979 | Kingdom of Thailand  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
C000102979 | Republic of South Africa  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000102979 | Brazil Notas do Tesouro Nacional  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000102979 | Republic of Colombia  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000102979 | Government of Malaysia  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000102979 | Czech Republic  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000102979 | Republic of India  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000102979 | Republic of Poland  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000102979 | Other Holdings Grouping  
Holdings [Line Items]  
Percent of Net Asset Value 38.10%
C000102979 | Indonesia  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000102979 | Mexico  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000102979 | South Africa  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000102979 | Thailand  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000102979 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
C000102979 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000102979 | Colombia  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
C000102979 | Malaysia  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000102979 | India  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000101161 | United Mexican States  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000101161 | Republic of Indonesia  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000101161 | Kingdom of Thailand  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
C000101161 | Republic of South Africa  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000101161 | Brazil Notas do Tesouro Nacional  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000101161 | Republic of Colombia  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000101161 | Government of Malaysia  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000101161 | Czech Republic  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000101161 | Republic of India  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000101161 | Republic of Poland  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000101161 | Other Holdings Grouping  
Holdings [Line Items]  
Percent of Net Asset Value 38.10%
C000101161 | Indonesia  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000101161 | Mexico  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000101161 | South Africa  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000101161 | Thailand  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000101161 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
C000101161 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000101161 | Colombia  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
C000101161 | Malaysia  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000101161 | India  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000166322 | United Mexican States  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000166322 | Republic of Indonesia  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000166322 | Kingdom of Thailand  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
C000166322 | Republic of South Africa  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000166322 | Brazil Notas do Tesouro Nacional  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000166322 | Republic of Colombia  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000166322 | Government of Malaysia  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000166322 | Czech Republic  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000166322 | Republic of India  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000166322 | Republic of Poland  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000166322 | Other Holdings Grouping  
Holdings [Line Items]  
Percent of Net Asset Value 38.10%
C000166322 | Indonesia  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000166322 | Mexico  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000166322 | South Africa  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000166322 | Thailand  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000166322 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
C000166322 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000166322 | Colombia  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
C000166322 | Malaysia  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000166322 | India  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000225813 | United Mexican States  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000225813 | Republic of Indonesia  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000225813 | Kingdom of Thailand  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
C000225813 | Republic of South Africa  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000225813 | Brazil Notas do Tesouro Nacional  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000225813 | Republic of Colombia  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000225813 | Government of Malaysia  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000225813 | Czech Republic  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000225813 | Republic of India  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000225813 | Republic of Poland  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000225813 | Other Holdings Grouping  
Holdings [Line Items]  
Percent of Net Asset Value 38.10%
C000225813 | Indonesia  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000225813 | Mexico  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000225813 | South Africa  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000225813 | Thailand  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000225813 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
C000225813 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000225813 | Colombia  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
C000225813 | Malaysia  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000225813 | India  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%