v3.26.1
Shareholder Report, Holdings (Details)
Jun. 30, 2026
C000102979 | Top10HoldingBrazil Notas do Tesouro NacionalBNY-BK6FNL0  
Holdings [Line Items]  
Percent of Net Asset Value 9.50%
C000102979 | Top10HoldingUnited Mexican StatesBNY-BR4SJK1  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
C000102979 | Top10HoldingRepublic of IndonesiaBNY-BL53JN6  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000102979 | Top10HoldingGovernment of MalaysiaBNY-BFC9ZJ3  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
C000102979 | Top10HoldingRepublic of South AfricaBNY-BPXR8C0  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000102979 | Top10HoldingRepublic of ColombiaBNY-BVFPYD7  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
C000102979 | Top10HoldingRepublic of HungaryBNY-HU0000405543  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000102979 | Top10HoldingRepublic of PolandBNY-BV5DRX2  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000102979 | Top10HoldingKingdom of ThailandBNY-BQD33C0  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000102979 | Top10HoldingRepublic of IndiaBNY-BPK87K7  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000102979 | Investment TypeOther Holdings Grouping  
Holdings [Line Items]  
Percent of Net Asset Value 36.80%
C000102979 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 9.50%
C000102979 | Mexico  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000102979 | Indonesia  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000102979 | Malaysia  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
C000102979 | South Africa  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000102979 | Colombia  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
C000102979 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000102979 | Hungary  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000102979 | Poland  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000101161 | Top10HoldingBrazil Notas do Tesouro NacionalBNY-BK6FNL0  
Holdings [Line Items]  
Percent of Net Asset Value 9.50%
C000101161 | Top10HoldingUnited Mexican StatesBNY-BR4SJK1  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
C000101161 | Top10HoldingRepublic of IndonesiaBNY-BL53JN6  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000101161 | Top10HoldingGovernment of MalaysiaBNY-BFC9ZJ3  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
C000101161 | Top10HoldingRepublic of South AfricaBNY-BPXR8C0  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000101161 | Top10HoldingRepublic of ColombiaBNY-BVFPYD7  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
C000101161 | Top10HoldingRepublic of HungaryBNY-HU0000405543  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000101161 | Top10HoldingRepublic of PolandBNY-BV5DRX2  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000101161 | Top10HoldingKingdom of ThailandBNY-BQD33C0  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000101161 | Top10HoldingRepublic of IndiaBNY-BPK87K7  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000101161 | Investment TypeOther Holdings Grouping  
Holdings [Line Items]  
Percent of Net Asset Value 36.80%
C000101161 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 9.50%
C000101161 | Mexico  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000101161 | Indonesia  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000101161 | Malaysia  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
C000101161 | South Africa  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000101161 | Colombia  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
C000101161 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000101161 | Hungary  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000101161 | Poland  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000166322 | Top10HoldingBrazil Notas do Tesouro NacionalBNY-BK6FNL0  
Holdings [Line Items]  
Percent of Net Asset Value 9.50%
C000166322 | Top10HoldingUnited Mexican StatesBNY-BR4SJK1  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
C000166322 | Top10HoldingRepublic of IndonesiaBNY-BL53JN6  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000166322 | Top10HoldingGovernment of MalaysiaBNY-BFC9ZJ3  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
C000166322 | Top10HoldingRepublic of South AfricaBNY-BPXR8C0  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000166322 | Top10HoldingRepublic of ColombiaBNY-BVFPYD7  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
C000166322 | Top10HoldingRepublic of HungaryBNY-HU0000405543  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000166322 | Top10HoldingRepublic of PolandBNY-BV5DRX2  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000166322 | Top10HoldingKingdom of ThailandBNY-BQD33C0  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000166322 | Top10HoldingRepublic of IndiaBNY-BPK87K7  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000166322 | Investment TypeOther Holdings Grouping  
Holdings [Line Items]  
Percent of Net Asset Value 36.80%
C000166322 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 9.50%
C000166322 | Mexico  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000166322 | Indonesia  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000166322 | Malaysia  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
C000166322 | South Africa  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000166322 | Colombia  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
C000166322 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000166322 | Hungary  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000166322 | Poland  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000225813 | Top10HoldingBrazil Notas do Tesouro NacionalBNY-BK6FNL0  
Holdings [Line Items]  
Percent of Net Asset Value 9.50%
C000225813 | Top10HoldingUnited Mexican StatesBNY-BR4SJK1  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
C000225813 | Top10HoldingRepublic of IndonesiaBNY-BL53JN6  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000225813 | Top10HoldingGovernment of MalaysiaBNY-BFC9ZJ3  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
C000225813 | Top10HoldingRepublic of South AfricaBNY-BPXR8C0  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000225813 | Top10HoldingRepublic of ColombiaBNY-BVFPYD7  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
C000225813 | Top10HoldingRepublic of HungaryBNY-HU0000405543  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000225813 | Top10HoldingRepublic of PolandBNY-BV5DRX2  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000225813 | Top10HoldingKingdom of ThailandBNY-BQD33C0  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000225813 | Top10HoldingRepublic of IndiaBNY-BPK87K7  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000225813 | Investment TypeOther Holdings Grouping  
Holdings [Line Items]  
Percent of Net Asset Value 36.80%
C000225813 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 9.50%
C000225813 | Mexico  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000225813 | Indonesia  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000225813 | Malaysia  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
C000225813 | South Africa  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000225813 | Colombia  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
C000225813 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000225813 | Hungary  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000225813 | Poland  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%