v3.26.1
Shareholder Report, Holdings (Details)
Jun. 30, 2026
C000130461 [Member] | Net Other Assets and Liabilities Country [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.10%
C000130461 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 59.00%
C000130461 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
C000130461 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000130461 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000130461 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000130461 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000130461 [Member] | ITALY  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000130461 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000130461 [Member] | COLOMBIA  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000130461 [Member] | CHINA  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000130461 [Member] | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000130461 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000130461 [Member] | Net Other Assets and Liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000130461 [Member] | Forward Foreign Currency Exchange Contracts [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000130461 [Member] | Investment Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000130461 [Member] | Corporate Bonds and Notes [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
C000130461 [Member] | U S Government Agencies Mortgage Backed [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.80%
C000130461 [Member] | Foreign Governmental [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
C000130461 [Member] | Commercial Mortgage-Backed Securities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000130461 [Member] | Asset-Backed Securities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000130461 [Member] | US Treasury Securities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 21.30%
C000130461 [Member] | Collateralized Loan Obligations [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000130461 [Member] | Future [Member]  
Holdings [Line Items]  
Percent of Net Asset Value (0.30%)
C000031763 [Member] | Net Other Assets and Liabilities Country [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.10%
C000031763 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 59.00%
C000031763 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
C000031763 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000031763 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000031763 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000031763 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000031763 [Member] | ITALY  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000031763 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000031763 [Member] | COLOMBIA  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000031763 [Member] | CHINA  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000031763 [Member] | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000031763 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000031763 [Member] | Net Other Assets and Liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000031763 [Member] | Forward Foreign Currency Exchange Contracts [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000031763 [Member] | Investment Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000031763 [Member] | Corporate Bonds and Notes [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
C000031763 [Member] | U S Government Agencies Mortgage Backed [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.80%
C000031763 [Member] | Foreign Governmental [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
C000031763 [Member] | Commercial Mortgage-Backed Securities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000031763 [Member] | Asset-Backed Securities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000031763 [Member] | US Treasury Securities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 21.30%
C000031763 [Member] | Collateralized Loan Obligations [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000031763 [Member] | Future [Member]  
Holdings [Line Items]  
Percent of Net Asset Value (0.30%)
C000081695 [Member] | Net Other Assets and Liabilities Country [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.10%
C000081695 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 59.00%
C000081695 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
C000081695 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000081695 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000081695 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000081695 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000081695 [Member] | ITALY  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000081695 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000081695 [Member] | COLOMBIA  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000081695 [Member] | CHINA  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000081695 [Member] | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000081695 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000081695 [Member] | Net Other Assets and Liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000081695 [Member] | Forward Foreign Currency Exchange Contracts [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000081695 [Member] | Investment Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000081695 [Member] | Corporate Bonds and Notes [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
C000081695 [Member] | U S Government Agencies Mortgage Backed [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.80%
C000081695 [Member] | Foreign Governmental [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
C000081695 [Member] | Commercial Mortgage-Backed Securities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000081695 [Member] | Asset-Backed Securities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000081695 [Member] | US Treasury Securities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 21.30%
C000081695 [Member] | Collateralized Loan Obligations [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000081695 [Member] | Future [Member]  
Holdings [Line Items]  
Percent of Net Asset Value (0.30%)
C000081694 [Member] | Net Other Assets and Liabilities Country [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.10%
C000081694 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 59.00%
C000081694 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
C000081694 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000081694 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000081694 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000081694 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000081694 [Member] | ITALY  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000081694 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000081694 [Member] | COLOMBIA  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000081694 [Member] | CHINA  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000081694 [Member] | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000081694 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000081694 [Member] | Net Other Assets and Liabilities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000081694 [Member] | Forward Foreign Currency Exchange Contracts [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000081694 [Member] | Investment Companies [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000081694 [Member] | Corporate Bonds and Notes [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
C000081694 [Member] | U S Government Agencies Mortgage Backed [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.80%
C000081694 [Member] | Foreign Governmental [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
C000081694 [Member] | Commercial Mortgage-Backed Securities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000081694 [Member] | Asset-Backed Securities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000081694 [Member] | US Treasury Securities [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 21.30%
C000081694 [Member] | Collateralized Loan Obligations [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000081694 [Member] | Future [Member]  
Holdings [Line Items]  
Percent of Net Asset Value (0.30%)