v3.26.1
Shareholder Report, Line Graph (Details) - USD ($)
 6 Months Ended 12 Months Ended 18 Months Ended 24 Months Ended 30 Months Ended 36 Months Ended 42 Months Ended 48 Months Ended 54 Months Ended 60 Months Ended 66 Months Ended 72 Months Ended 78 Months Ended 84 Months Ended 90 Months Ended 96 Months Ended 102 Months Ended 108 Months Ended 114 Months Ended 120 Months Ended
Mar. 31, 2016
Mar. 31, 2026
Sep. 30, 2016
Mar. 31, 2017
Sep. 30, 2017
Mar. 31, 2018
Sep. 30, 2018
Mar. 31, 2019
Sep. 30, 2019
Mar. 31, 2020
Sep. 30, 2020
Mar. 31, 2021
Sep. 30, 2021
Mar. 31, 2022
Sep. 30, 2022
Mar. 31, 2023
Sep. 30, 2023
Mar. 31, 2024
Sep. 30, 2024
Mar. 31, 2025
Sep. 30, 2025
Mar. 31, 2026
Bloomberg U.S. Aggregate Bond Index                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name   Bloomberg U.S. Aggregate Bond Index                                        
Accumulated Value $ 100,000   $ 102,682 $ 100,441 $ 102,757 $ 101,649 $ 101,507 $ 106,203 $ 111,959 $ 115,691 $ 119,779 $ 116,513 $ 118,706 $ 111,675 $ 101,376 $ 106,333 $ 102,029 $ 108,139 $ 113,832 $ 113,416 $ 117,115 $ 118,348
Bloomberg U.S. Aggregate Bond Index                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name   Bloomberg U.S. Aggregate Bond Index                                        
Accumulated Value 10,000   10,268 10,044 10,276 10,165 10,151 10,620 11,196 11,569 11,978 11,651 11,871 11,168 10,138 10,633 10,203 10,814 11,383 11,342 11,711 11,835
Bloomberg U.S. Aggregate Bond Index                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name   Bloomberg U.S. Aggregate Bond Index                                        
Accumulated Value 100,000   102,682 100,441 102,757 101,649 101,507 106,203 111,959 115,691 119,779 116,513 118,706 111,675 101,376 106,333 102,029 108,139 113,832 113,416 117,115 118,348
Bloomberg U.S. Aggregate Bond Index                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name   Bloomberg U.S. Aggregate Bond Index                                        
Accumulated Value 10,000   10,268 10,044 10,276 10,165 10,151 10,620 11,196 11,569 11,978 11,651 11,871 11,168 10,138 10,633 10,203 10,814 11,383 11,342 11,711 11,835
ICE BofAML Non-Financial Developed HY Constrained Index                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name   ICE BofAML Non-Financial Developed HY Constrained Index                                        
Accumulated Value 100,000   110,241 114,201 121,074 121,512 123,608 125,421 129,021 114,304 132,749 142,822 147,042 139,933 120,986 133,631 135,983 147,948 158,156 158,921 170,999 170,951
S&P UBS Leveraged Loan Index                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name   S&P UBS Leveraged Loan Index                                        
Accumulated Value 100,000   106,049 109,742 111,734 114,832 117,968 118,653 121,641 107,369 122,656 129,669 133,033 133,847 129,543 136,688 145,701 153,640 159,764 164,421 171,086 172,296
ICE BofAML Non-Financial Developed HY Constrained Index                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name   ICE BofAML Non-Financial Developed HY Constrained Index                                        
Accumulated Value 10,000   11,024 11,420 12,107 12,151 12,361 12,542 12,902 11,430 13,275 14,282 14,704 13,993 12,099 13,363 13,598 14,795 15,816 15,892 17,100 17,095
S&P UBS Leveraged Loan Index                                            
Account Value [Line Items]                                            
Line Graph and Table Measure Name   S&P UBS Leveraged Loan Index                                        
Accumulated Value $ 10,000   $ 10,605 $ 10,974 $ 11,173 $ 11,483 $ 11,797 $ 11,865 $ 12,164 $ 10,737 $ 12,266 $ 12,967 $ 13,303 $ 13,385 $ 12,954 $ 13,669 $ 14,570 $ 15,364 $ 15,976 $ 16,442 $ 17,109 $ 17,230