v3.26.1
Shareholder Report, Holdings (Details)
Jun. 30, 2026
C000018231 | Cash & equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000018231 | Not rated  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000018231 | CC  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000018231 | CCC  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000018231 | B  
Holdings [Line Items]  
Percent of Net Asset Value 28.20%
C000018231 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 57.00%
C000018231 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000018231 | Building Materials  
Holdings [Line Items]  
Percent of Net Asset Value 37.10%
C000018231 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000018231 | IndustryHealthcare  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000018231 | IndustryRetailers  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000018231 | IndustryLodging  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000018231 | IndustryAutomotive  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000018231 | IndustryMetals & Mining  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
C000018231 | IndustryMedia Entertainment  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000018231 | IndustryIndependent Energy  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000018231 | IndustryProperty & Casualty Insurance  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
C000018231 | IndustryMidstream  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000018231 | IndustryCable Satellite  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000018231 | IndustryTechnology  
Holdings [Line Items]  
Percent of Net Asset Value 12.20%
C000018233 | Cash & equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000018233 | Not rated  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000018233 | CC  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000018233 | CCC  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000018233 | B  
Holdings [Line Items]  
Percent of Net Asset Value 28.20%
C000018233 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 57.00%
C000018233 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000018233 | Building Materials  
Holdings [Line Items]  
Percent of Net Asset Value 37.10%
C000018233 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000018233 | IndustryHealthcare  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000018233 | IndustryRetailers  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000018233 | IndustryLodging  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000018233 | IndustryAutomotive  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000018233 | IndustryMetals & Mining  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
C000018233 | IndustryMedia Entertainment  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000018233 | IndustryIndependent Energy  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000018233 | IndustryProperty & Casualty Insurance  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
C000018233 | IndustryMidstream  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000018233 | IndustryCable Satellite  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000018233 | IndustryTechnology  
Holdings [Line Items]  
Percent of Net Asset Value 12.20%
C000175112 | Cash & equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000175112 | Not rated  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000175112 | CC  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000175112 | CCC  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000175112 | B  
Holdings [Line Items]  
Percent of Net Asset Value 28.20%
C000175112 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 57.00%
C000175112 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000175112 | Building Materials  
Holdings [Line Items]  
Percent of Net Asset Value 37.10%
C000175112 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000175112 | IndustryHealthcare  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000175112 | IndustryRetailers  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000175112 | IndustryLodging  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000175112 | IndustryAutomotive  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000175112 | IndustryMetals & Mining  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
C000175112 | IndustryMedia Entertainment  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000175112 | IndustryIndependent Energy  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000175112 | IndustryProperty & Casualty Insurance  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
C000175112 | IndustryMidstream  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000175112 | IndustryCable Satellite  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000175112 | IndustryTechnology  
Holdings [Line Items]  
Percent of Net Asset Value 12.20%
C000069253 | Cash & equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000069253 | Not rated  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000069253 | CC  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000069253 | CCC  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000069253 | B  
Holdings [Line Items]  
Percent of Net Asset Value 28.20%
C000069253 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 57.00%
C000069253 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000069253 | Building Materials  
Holdings [Line Items]  
Percent of Net Asset Value 37.10%
C000069253 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000069253 | IndustryHealthcare  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000069253 | IndustryRetailers  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000069253 | IndustryLodging  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000069253 | IndustryAutomotive  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000069253 | IndustryMetals & Mining  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
C000069253 | IndustryMedia Entertainment  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000069253 | IndustryIndependent Energy  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000069253 | IndustryProperty & Casualty Insurance  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
C000069253 | IndustryMidstream  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000069253 | IndustryCable Satellite  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000069253 | IndustryTechnology  
Holdings [Line Items]  
Percent of Net Asset Value 12.20%
C000223747 | ARM Holdings PLCFR_042068205  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000223747 | Tesla, Inc.FR_88160R101  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000223747 | MercadoLibre, Inc.FR_58733R102  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000223747 | Adyen NVFR_BZ1HM4902  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223747 | Shopify, Inc.FR_82509L107  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223747 | Tencent Holdings Ltd.FR_BMMV2K903  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000223747 | Roche Holding AGFR_ACI38LVK6  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000223747 | Novo Nordisk ASFR_BP6KMJ909  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000223747 | Novartis AGFR_710306903  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000223747 | Trip.com Group Ltd.FR_89677Q107  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000223747 | Textiles, Apparel & Luxury Goods  
Holdings [Line Items]  
Percent of Net Asset Value 13.90%
C000223747 | Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000223747 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000223747 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000223747 | IndustryIT Services  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223747 | IndustryHotels, Restaurants & Leisure  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000223747 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000223747 | IndustryFinancial Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
C000223747 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000223747 | IndustryBroadline Retail  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000223747 | IndustryAutomobiles  
Holdings [Line Items]  
Percent of Net Asset Value 8.40%
C000223747 | IndustryBeverages  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000223747 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
C000223747 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 12.80%
C000223747 | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000223747 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
C000223747 | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
C000223747 | Denmark  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000223747 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000223747 | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223747 | France  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000223747 | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
C000223747 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000223747 | China  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
C000223747 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 32.30%
C000223748 | ARM Holdings PLCFR_042068205  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000223748 | Tesla, Inc.FR_88160R101  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000223748 | MercadoLibre, Inc.FR_58733R102  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000223748 | Adyen NVFR_BZ1HM4902  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223748 | Shopify, Inc.FR_82509L107  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223748 | Tencent Holdings Ltd.FR_BMMV2K903  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000223748 | Roche Holding AGFR_ACI38LVK6  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000223748 | Novo Nordisk ASFR_BP6KMJ909  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000223748 | Novartis AGFR_710306903  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000223748 | Trip.com Group Ltd.FR_89677Q107  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000223748 | Textiles, Apparel & Luxury Goods  
Holdings [Line Items]  
Percent of Net Asset Value 13.90%
C000223748 | Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000223748 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000223748 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000223748 | IndustryIT Services  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223748 | IndustryHotels, Restaurants & Leisure  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000223748 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000223748 | IndustryFinancial Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
C000223748 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000223748 | IndustryBroadline Retail  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000223748 | IndustryAutomobiles  
Holdings [Line Items]  
Percent of Net Asset Value 8.40%
C000223748 | IndustryBeverages  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000223748 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
C000223748 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 12.80%
C000223748 | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000223748 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
C000223748 | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
C000223748 | Denmark  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000223748 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000223748 | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223748 | France  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000223748 | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
C000223748 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000223748 | China  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
C000223748 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 32.30%
C000223749 | ARM Holdings PLCFR_042068205  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000223749 | Tesla, Inc.FR_88160R101  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000223749 | MercadoLibre, Inc.FR_58733R102  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000223749 | Adyen NVFR_BZ1HM4902  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223749 | Shopify, Inc.FR_82509L107  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223749 | Tencent Holdings Ltd.FR_BMMV2K903  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000223749 | Roche Holding AGFR_ACI38LVK6  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000223749 | Novo Nordisk ASFR_BP6KMJ909  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000223749 | Novartis AGFR_710306903  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000223749 | Trip.com Group Ltd.FR_89677Q107  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000223749 | Textiles, Apparel & Luxury Goods  
Holdings [Line Items]  
Percent of Net Asset Value 13.90%
C000223749 | Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000223749 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000223749 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000223749 | IndustryIT Services  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223749 | IndustryHotels, Restaurants & Leisure  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000223749 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000223749 | IndustryFinancial Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
C000223749 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000223749 | IndustryBroadline Retail  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000223749 | IndustryAutomobiles  
Holdings [Line Items]  
Percent of Net Asset Value 8.40%
C000223749 | IndustryBeverages  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000223749 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
C000223749 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 12.80%
C000223749 | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000223749 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
C000223749 | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
C000223749 | Denmark  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000223749 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000223749 | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223749 | France  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000223749 | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
C000223749 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000223749 | China  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
C000223749 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 32.30%
C000223746 | ARM Holdings PLCFR_042068205  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000223746 | Tesla, Inc.FR_88160R101  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000223746 | MercadoLibre, Inc.FR_58733R102  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000223746 | Adyen NVFR_BZ1HM4902  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223746 | Shopify, Inc.FR_82509L107  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223746 | Tencent Holdings Ltd.FR_BMMV2K903  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000223746 | Roche Holding AGFR_ACI38LVK6  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000223746 | Novo Nordisk ASFR_BP6KMJ909  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000223746 | Novartis AGFR_710306903  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000223746 | Trip.com Group Ltd.FR_89677Q107  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000223746 | Textiles, Apparel & Luxury Goods  
Holdings [Line Items]  
Percent of Net Asset Value 13.90%
C000223746 | Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000223746 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000223746 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000223746 | IndustryIT Services  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223746 | IndustryHotels, Restaurants & Leisure  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000223746 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000223746 | IndustryFinancial Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
C000223746 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000223746 | IndustryBroadline Retail  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000223746 | IndustryAutomobiles  
Holdings [Line Items]  
Percent of Net Asset Value 8.40%
C000223746 | IndustryBeverages  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000223746 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
C000223746 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 12.80%
C000223746 | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000223746 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
C000223746 | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
C000223746 | Denmark  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000223746 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000223746 | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000223746 | France  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000223746 | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
C000223746 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000223746 | China  
Holdings [Line Items]  
Percent of Net Asset Value 15.50%
C000223746 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 32.30%
C000018234 | Cash & equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000018234 | Not rated  
Holdings [Line Items]  
Percent of Net Asset Value 21.50%
C000018234 | CC  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000018234 | CCC  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000018234 | B  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000018234 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000018234 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 41.00%
C000018234 | US Treasury  
Holdings [Line Items]  
Percent of Net Asset Value 13.80%
C000018234 | A  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000018234 | AA  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000018234 | AAA  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000018234 | Consumer Cyclical Services  
Holdings [Line Items]  
Percent of Net Asset Value 41.70%
C000018234 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000018234 | IndustryMidstream  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000018234 | IndustryTechnology  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000018234 | IndustryFinance Companies  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000018234 | IndustryABS Car Loan  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
C000018234 | IndustryCollateralized Loan Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000018234 | IndustryBanking  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000018234 | IndustryABS Other  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000018234 | IndustryTreasuries  
Holdings [Line Items]  
Percent of Net Asset Value 13.60%
C000018236 | Cash & equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000018236 | Not rated  
Holdings [Line Items]  
Percent of Net Asset Value 21.50%
C000018236 | CC  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000018236 | CCC  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000018236 | B  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000018236 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000018236 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 41.00%
C000018236 | US Treasury  
Holdings [Line Items]  
Percent of Net Asset Value 13.80%
C000018236 | A  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000018236 | AA  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000018236 | AAA  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000018236 | Consumer Cyclical Services  
Holdings [Line Items]  
Percent of Net Asset Value 41.70%
C000018236 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000018236 | IndustryMidstream  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000018236 | IndustryTechnology  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000018236 | IndustryFinance Companies  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000018236 | IndustryABS Car Loan  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
C000018236 | IndustryCollateralized Loan Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000018236 | IndustryBanking  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000018236 | IndustryABS Other  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000018236 | IndustryTreasuries  
Holdings [Line Items]  
Percent of Net Asset Value 13.60%
C000125485 | Cash & equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000125485 | Not rated  
Holdings [Line Items]  
Percent of Net Asset Value 21.50%
C000125485 | CC  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000125485 | CCC  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000125485 | B  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000125485 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000125485 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 41.00%
C000125485 | US Treasury  
Holdings [Line Items]  
Percent of Net Asset Value 13.80%
C000125485 | A  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000125485 | AA  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000125485 | AAA  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000125485 | Consumer Cyclical Services  
Holdings [Line Items]  
Percent of Net Asset Value 41.70%
C000125485 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000125485 | IndustryMidstream  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000125485 | IndustryTechnology  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000125485 | IndustryFinance Companies  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000125485 | IndustryABS Car Loan  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
C000125485 | IndustryCollateralized Loan Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000125485 | IndustryBanking  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000125485 | IndustryABS Other  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000125485 | IndustryTreasuries  
Holdings [Line Items]  
Percent of Net Asset Value 13.60%
C000018238 | Cash & equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000018238 | Not rated  
Holdings [Line Items]  
Percent of Net Asset Value 21.50%
C000018238 | CC  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000018238 | CCC  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000018238 | B  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000018238 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000018238 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 41.00%
C000018238 | US Treasury  
Holdings [Line Items]  
Percent of Net Asset Value 13.80%
C000018238 | A  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000018238 | AA  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000018238 | AAA  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000018238 | Consumer Cyclical Services  
Holdings [Line Items]  
Percent of Net Asset Value 41.70%
C000018238 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000018238 | IndustryMidstream  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000018238 | IndustryTechnology  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000018238 | IndustryFinance Companies  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000018238 | IndustryABS Car Loan  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
C000018238 | IndustryCollateralized Loan Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000018238 | IndustryBanking  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000018238 | IndustryABS Other  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000018238 | IndustryTreasuries  
Holdings [Line Items]  
Percent of Net Asset Value 13.60%
C000082998 | Cash & equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000082998 | Not rated  
Holdings [Line Items]  
Percent of Net Asset Value 21.50%
C000082998 | CC  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000082998 | CCC  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000082998 | B  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000082998 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000082998 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 41.00%
C000082998 | US Treasury  
Holdings [Line Items]  
Percent of Net Asset Value 13.80%
C000082998 | A  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000082998 | AA  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000082998 | AAA  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000082998 | Consumer Cyclical Services  
Holdings [Line Items]  
Percent of Net Asset Value 41.70%
C000082998 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000082998 | IndustryMidstream  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000082998 | IndustryTechnology  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000082998 | IndustryFinance Companies  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000082998 | IndustryABS Car Loan  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
C000082998 | IndustryCollateralized Loan Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000082998 | IndustryBanking  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000082998 | IndustryABS Other  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000082998 | IndustryTreasuries  
Holdings [Line Items]  
Percent of Net Asset Value 13.60%
C000018251 | Cash & equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000018251 | Not rated  
Holdings [Line Items]  
Percent of Net Asset Value 23.40%
C000018251 | CC  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000018251 | CCC  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000018251 | B  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
C000018251 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 17.10%
C000018251 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
C000018251 | US Treasury  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
C000018251 | A  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000018251 | AA  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000018251 | AAA  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000018251 | Electric  
Holdings [Line Items]  
Percent of Net Asset Value 42.10%
C000018251 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000018251 | IndustryMedia Entertainment  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000018251 | IndustryCable Satellite  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
C000018251 | IndustryTechnology  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
C000018251 | IndustryBanking  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000018251 | IndustryABS Other  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000018251 | IndustryTreasuries  
Holdings [Line Items]  
Percent of Net Asset Value 15.70%
C000018251 | IndustryEquity-Linked Notes  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000018251 | IndustrySovereigns  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000018253 | Cash & equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000018253 | Not rated  
Holdings [Line Items]  
Percent of Net Asset Value 23.40%
C000018253 | CC  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000018253 | CCC  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000018253 | B  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
C000018253 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 17.10%
C000018253 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
C000018253 | US Treasury  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
C000018253 | A  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000018253 | AA  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000018253 | AAA  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000018253 | Electric  
Holdings [Line Items]  
Percent of Net Asset Value 42.10%
C000018253 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000018253 | IndustryMedia Entertainment  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000018253 | IndustryCable Satellite  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
C000018253 | IndustryTechnology  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
C000018253 | IndustryBanking  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000018253 | IndustryABS Other  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000018253 | IndustryTreasuries  
Holdings [Line Items]  
Percent of Net Asset Value 15.70%
C000018253 | IndustryEquity-Linked Notes  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000018253 | IndustrySovereigns  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000125487 | Cash & equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000125487 | Not rated  
Holdings [Line Items]  
Percent of Net Asset Value 23.40%
C000125487 | CC  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000125487 | CCC  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000125487 | B  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
C000125487 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 17.10%
C000125487 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
C000125487 | US Treasury  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
C000125487 | A  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000125487 | AA  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000125487 | AAA  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000125487 | Electric  
Holdings [Line Items]  
Percent of Net Asset Value 42.10%
C000125487 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000125487 | IndustryMedia Entertainment  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000125487 | IndustryCable Satellite  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
C000125487 | IndustryTechnology  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
C000125487 | IndustryBanking  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000125487 | IndustryABS Other  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000125487 | IndustryTreasuries  
Holdings [Line Items]  
Percent of Net Asset Value 15.70%
C000125487 | IndustryEquity-Linked Notes  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000125487 | IndustrySovereigns  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000018254 | Cash & equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000018254 | Not rated  
Holdings [Line Items]  
Percent of Net Asset Value 23.40%
C000018254 | CC  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000018254 | CCC  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000018254 | B  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
C000018254 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 17.10%
C000018254 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
C000018254 | US Treasury  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
C000018254 | A  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000018254 | AA  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000018254 | AAA  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000018254 | Electric  
Holdings [Line Items]  
Percent of Net Asset Value 42.10%
C000018254 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000018254 | IndustryMedia Entertainment  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000018254 | IndustryCable Satellite  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
C000018254 | IndustryTechnology  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
C000018254 | IndustryBanking  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000018254 | IndustryABS Other  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000018254 | IndustryTreasuries  
Holdings [Line Items]  
Percent of Net Asset Value 15.70%
C000018254 | IndustryEquity-Linked Notes  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000018254 | IndustrySovereigns  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000082999 | Cash & equivalents  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000082999 | Not rated  
Holdings [Line Items]  
Percent of Net Asset Value 23.40%
C000082999 | CC  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000082999 | CCC  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000082999 | B  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
C000082999 | BB  
Holdings [Line Items]  
Percent of Net Asset Value 17.10%
C000082999 | BBB  
Holdings [Line Items]  
Percent of Net Asset Value 27.00%
C000082999 | US Treasury  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
C000082999 | A  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000082999 | AA  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000082999 | AAA  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000082999 | Electric  
Holdings [Line Items]  
Percent of Net Asset Value 42.10%
C000082999 | IndustryShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000082999 | IndustryMedia Entertainment  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000082999 | IndustryCable Satellite  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
C000082999 | IndustryTechnology  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
C000082999 | IndustryBanking  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000082999 | IndustryABS Other  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000082999 | IndustryTreasuries  
Holdings [Line Items]  
Percent of Net Asset Value 15.70%
C000082999 | IndustryEquity-Linked Notes  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000082999 | IndustrySovereigns  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%