v3.25.2
Shareholder Report, Line Graph (Details) - USD ($)
 12 Months Ended
May 31, 2024
May 31, 2023
May 31, 2022
May 31, 2021
May 31, 2020
May 31, 2019
May 31, 2018
May 31, 2017
May 31, 2016
May 31, 2015
May 31, 2025
Class A                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Class A (with sales charge)
Accumulated Value $ 12,848 $ 11,578 $ 11,878 $ 12,740 $ 10,944 $ 11,001 $ 10,553 $ 10,219 $ 9,037 $ 9,575 $ 14,033
Class C                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Class C (with sales charge)
Accumulated Value 12,504 11,366 11,766 12,700 10,981 11,128 10,770 10,509 9,368 10,000 $ 13,577
Class R                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Class R
Accumulated Value 13,020 11,770 12,124 13,044 11,230 11,312 10,915 10,602 9,399 10,000 $ 14,174
Class I                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Class I
Accumulated Value 1,371,289 1,232,694 1,263,153 1,350,497 1,157,790 1,159,442 1,110,572 1,072,681 946,497 1,000,000 $ 1,501,130
Class IS                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Class IS
Accumulated Value 1,379,800 1,239,820 1,268,866 1,355,664 1,159,917 1,161,341 1,112,930 1,073,775 946,822 1,000,000 $ 1,513,778
Bloomberg U.S. Aggregate Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg U.S. Aggregate Index
Accumulated Value 10,995 10,854 11,091 12,085 12,134 11,090 10,423 10,462 10,299 10,000 $ 11,596
Bloomberg U.S. Aggregate Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg U.S. Aggregate Index
Accumulated Value 10,995 10,854 11,091 12,085 12,134 11,090 10,423 10,462 10,299 10,000 $ 11,596
Bloomberg U.S. Aggregate Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg U.S. Aggregate Index
Accumulated Value 10,995 10,854 11,091 12,085 12,134 11,090 10,423 10,462 10,299 10,000 $ 11,596
Bloomberg U.S. Aggregate Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg U.S. Aggregate Index
Accumulated Value 1,099,543 1,085,373 1,109,140 1,208,504 1,213,416 1,108,998 1,042,288 1,046,207 1,029,949 1,000,000 $ 1,159,566
Bloomberg U.S. Aggregate Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg U.S. Aggregate Index
Accumulated Value 1,099,543 1,085,373 1,109,140 1,208,504 1,213,416 1,108,998 1,042,288 1,046,207 1,029,949 1,000,000 $ 1,159,566
Bloomberg U.S. Corporate High Yield - 2% Issuer Cap Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg U.S. Corporate High Yield - 2% Issuer Cap Index
Accumulated Value 14,933 13,425 13,419 14,166 12,329 12,169 11,535 11,270 9,923 10,000 $ 16,324
Bloomberg U.S. Corporate High Yield - 2% Issuer Cap Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg U.S. Corporate High Yield - 2% Issuer Cap Index
Accumulated Value 14,933 13,425 13,419 14,166 12,329 12,169 11,535 11,270 9,923 10,000 $ 16,324
Bloomberg U.S. Corporate High Yield - 2% Issuer Cap Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg U.S. Corporate High Yield - 2% Issuer Cap Index
Accumulated Value 14,933 13,425 13,419 14,166 12,329 12,169 11,535 11,270 9,923 10,000 $ 16,324
Bloomberg U.S. Corporate High Yield - 2% Issuer Cap Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg U.S. Corporate High Yield - 2% Issuer Cap Index
Accumulated Value 1,493,305 1,342,543 1,341,903 1,416,640 1,232,883 1,216,947 1,153,479 1,126,996 992,302 1,000,000 $ 1,632,422
Bloomberg U.S. Corporate High Yield - 2% Issuer Cap Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg U.S. Corporate High Yield - 2% Issuer Cap Index
Accumulated Value $ 1,493,305 $ 1,342,543 $ 1,341,903 $ 1,416,640 $ 1,232,883 $ 1,216,947 $ 1,153,479 $ 1,126,996 $ 992,302 $ 1,000,000 $ 1,632,422