v3.25.2
Shareholder Report, Holdings (Details)
Apr. 30, 2025
C000013484 | Not Rated  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000013484 | CCC or Lower  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
C000013484 | B  
Holdings [Line Items]  
Percent of Net Asset Value 40.10%
C000013484 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 44.70%
C000013484 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000013484 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000013484 | AssetSenior Floating-Rate Loans  
Holdings [Line Items]  
Percent of Total Investments 7.00%
C000013484 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 87.50%
C000013486 | Not Rated  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000013486 | CCC or Lower  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
C000013486 | B  
Holdings [Line Items]  
Percent of Net Asset Value 40.10%
C000013486 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 44.70%
C000013486 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000013486 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000013486 | AssetSenior Floating-Rate Loans  
Holdings [Line Items]  
Percent of Total Investments 7.00%
C000013486 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 87.50%
C000013488 | Not Rated  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000013488 | CCC or Lower  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
C000013488 | B  
Holdings [Line Items]  
Percent of Net Asset Value 40.10%
C000013488 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 44.70%
C000013488 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000013488 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000013488 | AssetSenior Floating-Rate Loans  
Holdings [Line Items]  
Percent of Total Investments 7.00%
C000013488 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 87.50%
C000013487 | Not Rated  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000013487 | CCC or Lower  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
C000013487 | B  
Holdings [Line Items]  
Percent of Net Asset Value 40.10%
C000013487 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 44.70%
C000013487 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000013487 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000013487 | AssetSenior Floating-Rate Loans  
Holdings [Line Items]  
Percent of Total Investments 7.00%
C000013487 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 87.50%
C000142452 | Not Rated  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000142452 | CCC or Lower  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
C000142452 | B  
Holdings [Line Items]  
Percent of Net Asset Value 40.10%
C000142452 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 44.70%
C000142452 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000142452 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000142452 | AssetSenior Floating-Rate Loans  
Holdings [Line Items]  
Percent of Total Investments 7.00%
C000142452 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Total Investments 87.50%