v3.26.1
Shareholder Report, Line Graph (Details) 191615_DoubleLine Low Duration Bond Fund_Class N_TSR Annual {Class N} - USD ($)
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2026
Class N                      
Account Value [Line Items]                      
Accumulated Value $ 12,416 $ 11,789 $ 11,132 $ 11,068 $ 11,244 $ 10,527 $ 10,724 $ 10,425 $ 10,264 $ 10,000 $ 12,951
Bloomberg U.S. Aggregate Bond Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg U.S. Aggregate Bond Index
Accumulated Value 11,342 10,814 10,633 11,168 11,651 11,569 10,620 10,165 10,044 10,000 $ 11,835
ICE BofA 1-3 Year U.S. Treasury Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     ICE BofA 1-3 Year U.S. Treasury Index
Accumulated Value 11,502 10,910 10,596 10,575 10,885 10,858 10,300 10,028 10,025 10,000 $ 11,934
Bloomberg U.S. Aggregate 1-3 Years Index [Member]                      
Account Value [Line Items]                      
Line Graph and Table Measure Name                     Bloomberg U.S. Aggregate 1-3 Years Index
Accumulated Value $ 11,728 $ 11,105 $ 10,723 $ 10,697 $ 11,018 $ 10,889 $ 10,407 $ 10,099 $ 10,074 $ 10,000 $ 12,201