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 $ 10,589 $ 10,354 $ 10,509 $ 11,503 $ 11,221 $ 10,539 $ 10,007 $ 10,035 $ 9,780 $ 9,575 $ 11,269
Class C                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Class C (with sales charge)
Accumulated Value 10,371 10,222 10,463 11,533 11,335 10,718 10,250 10,322 10,135 10,000 $ 10,954
Class R                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Class R
Accumulated Value 10,776 10,580 10,787 11,845 11,597 10,922 10,399 10,418 10,184 10,000 $ 11,424
Class I                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Class I
Accumulated Value 1,138,582 1,110,168 1,125,079 1,228,290 1,196,412 1,119,077 1,059,053 1,055,202 1,024,955 1,000,000 $ 1,214,812
Class IS                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Class IS
Accumulated Value 1,149,101 1,119,122 1,132,925 1,235,196 1,200,832 1,123,047 1,061,920 1,057,335 1,026,476 1,000,000 $ 1,226,627
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 Intermediate U.S. Government/Credit Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg Intermediate U.S. Government/Credit Index
Accumulated Value 11,306 11,012 11,071 11,798 11,713 10,885 10,296 10,367 10,224 10,000 $ 12,036
Bloomberg Intermediate U.S. Government/Credit Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg Intermediate U.S. Government/Credit Index
Accumulated Value 11,306 11,012 11,071 11,798 11,713 10,885 10,296 10,367 10,224 10,000 $ 12,036
Bloomberg Intermediate U.S. Government/Credit Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg Intermediate U.S. Government/Credit Index
Accumulated Value 11,306 11,012 11,071 11,798 11,713 10,885 10,296 10,367 10,224 10,000 $ 12,036
Bloomberg Intermediate U.S. Government/Credit Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg Intermediate U.S. Government/Credit Index
Accumulated Value 1,130,596 1,101,244 1,107,111 1,179,804 1,171,278 1,088,549 1,029,566 1,036,750 1,022,443 1,000,000 $ 1,203,571
Bloomberg Intermediate U.S. Government/Credit Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg Intermediate U.S. Government/Credit Index
Accumulated Value $ 1,130,596 $ 1,101,244 $ 1,107,111 $ 1,179,804 $ 1,171,278 $ 1,088,549 $ 1,029,566 $ 1,036,750 $ 1,022,443 $ 1,000,000 $ 1,203,571