v3.26.1
Shareholder Report, Holdings (Details)
May 31, 2026
C000005536 | Top10HoldingU.S. Treasury NotesBNY-91282CQL8  
Holdings [Line Items]  
Percent of Net Asset Value 21.70%
C000005536 | Top10HoldingFederal National Mortgage Assn.BNY-3140XQ2C0  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000005536 | Top10HoldingFederal Home Loan MortgageBNY-3142GVGD7  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000005536 | Top10Holding_Fortress Credit BSL_BNY-34962DAQ9  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000005536 | Top10HoldingKKRBNY-48254UAE5  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000005536 | Top10HoldingCarvana Auto Receivables TrustBNY-14687VAE2  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000005536 | Top10HoldingEFMTBNY-26846KAJ7  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000005536 | Top10Holding_Banco Santander_BNY-802650AB7  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000005536 | Top10HoldingGovernment National Mortgage Assn.BNY-21H050664  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000005536 | Top10HoldingSalesforceBNY-79466LAR5  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000005536 | Other0BNY-76105YYY9  
Holdings [Line Items]  
Percent of Net Asset Value (0.60%)
C000005536 | 0BNY-62482BAA0  
Holdings [Line Items]  
Percent of Net Asset Value 36.20%
C000005536 | 0BNY-91282CQL8  
Holdings [Line Items]  
Percent of Net Asset Value 21.70%
C000005536 | 0BNY-64134AAJ1  
Holdings [Line Items]  
Percent of Net Asset Value 20.90%
C000005536 | 0BNY-26846KAJ7  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000005536 | 0BNY-3142GVGD7  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000005536 | 0BNY-92659LFJ8  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000005536 | 0BNY-50065RAK3  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000005536 | 0BNY-76105YYY9  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000005537 | Top10HoldingU.S. Treasury NotesBNY-91282CQL8  
Holdings [Line Items]  
Percent of Net Asset Value 21.70%
C000005537 | Top10HoldingFederal National Mortgage Assn.BNY-3140XQ2C0  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000005537 | Top10HoldingFederal Home Loan MortgageBNY-3142GVGD7  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000005537 | Top10Holding_Fortress Credit BSL_BNY-34962DAQ9  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000005537 | Top10HoldingKKRBNY-48254UAE5  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000005537 | Top10HoldingCarvana Auto Receivables TrustBNY-14687VAE2  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000005537 | Top10HoldingEFMTBNY-26846KAJ7  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000005537 | Top10Holding_Banco Santander_BNY-802650AB7  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000005537 | Top10HoldingGovernment National Mortgage Assn.BNY-21H050664  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000005537 | Top10HoldingSalesforceBNY-79466LAR5  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000005537 | Other0BNY-76105YYY9  
Holdings [Line Items]  
Percent of Net Asset Value (0.60%)
C000005537 | 0BNY-62482BAA0  
Holdings [Line Items]  
Percent of Net Asset Value 36.20%
C000005537 | 0BNY-91282CQL8  
Holdings [Line Items]  
Percent of Net Asset Value 21.70%
C000005537 | 0BNY-64134AAJ1  
Holdings [Line Items]  
Percent of Net Asset Value 20.90%
C000005537 | 0BNY-26846KAJ7  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000005537 | 0BNY-3142GVGD7  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000005537 | 0BNY-92659LFJ8  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000005537 | 0BNY-50065RAK3  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000005537 | 0BNY-76105YYY9  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000166333 | Top10HoldingU.S. Treasury NotesBNY-91282CQL8  
Holdings [Line Items]  
Percent of Net Asset Value 21.70%
C000166333 | Top10HoldingFederal National Mortgage Assn.BNY-3140XQ2C0  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000166333 | Top10HoldingFederal Home Loan MortgageBNY-3142GVGD7  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000166333 | Top10Holding_Fortress Credit BSL_BNY-34962DAQ9  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000166333 | Top10HoldingKKRBNY-48254UAE5  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000166333 | Top10HoldingCarvana Auto Receivables TrustBNY-14687VAE2  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000166333 | Top10HoldingEFMTBNY-26846KAJ7  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000166333 | Top10Holding_Banco Santander_BNY-802650AB7  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000166333 | Top10HoldingGovernment National Mortgage Assn.BNY-21H050664  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000166333 | Top10HoldingSalesforceBNY-79466LAR5  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000166333 | Other0BNY-76105YYY9  
Holdings [Line Items]  
Percent of Net Asset Value (0.60%)
C000166333 | 0BNY-62482BAA0  
Holdings [Line Items]  
Percent of Net Asset Value 36.20%
C000166333 | 0BNY-91282CQL8  
Holdings [Line Items]  
Percent of Net Asset Value 21.70%
C000166333 | 0BNY-64134AAJ1  
Holdings [Line Items]  
Percent of Net Asset Value 20.90%
C000166333 | 0BNY-26846KAJ7  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000166333 | 0BNY-3142GVGD7  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000166333 | 0BNY-92659LFJ8  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000166333 | 0BNY-50065RAK3  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000166333 | 0BNY-76105YYY9  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000225824 | Top10HoldingU.S. Treasury NotesBNY-91282CQL8  
Holdings [Line Items]  
Percent of Net Asset Value 21.70%
C000225824 | Top10HoldingFederal National Mortgage Assn.BNY-3140XQ2C0  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000225824 | Top10HoldingFederal Home Loan MortgageBNY-3142GVGD7  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000225824 | Top10Holding_Fortress Credit BSL_BNY-34962DAQ9  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000225824 | Top10HoldingKKRBNY-48254UAE5  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000225824 | Top10HoldingCarvana Auto Receivables TrustBNY-14687VAE2  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000225824 | Top10HoldingEFMTBNY-26846KAJ7  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000225824 | Top10Holding_Banco Santander_BNY-802650AB7  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000225824 | Top10HoldingGovernment National Mortgage Assn.BNY-21H050664  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000225824 | Top10HoldingSalesforceBNY-79466LAR5  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000225824 | Other0BNY-76105YYY9  
Holdings [Line Items]  
Percent of Net Asset Value (0.60%)
C000225824 | 0BNY-62482BAA0  
Holdings [Line Items]  
Percent of Net Asset Value 36.20%
C000225824 | 0BNY-91282CQL8  
Holdings [Line Items]  
Percent of Net Asset Value 21.70%
C000225824 | 0BNY-64134AAJ1  
Holdings [Line Items]  
Percent of Net Asset Value 20.90%
C000225824 | 0BNY-26846KAJ7  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000225824 | 0BNY-3142GVGD7  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000225824 | 0BNY-92659LFJ8  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000225824 | 0BNY-50065RAK3  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000225824 | 0BNY-76105YYY9  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%