v3.26.1
Shareholder Report, Line Graph (Details) 191615_DoubleLine Low Duration Bond Fund_Class I_TSR Annual {Class I} - 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 I                      
Account Value [Line Items]                      
Accumulated Value $ 127,094 $ 120,380 $ 113,398 $ 112,342 $ 113,957 $ 106,420 $ 108,145 $ 104,865 $ 102,990 $ 100,000 $ 132,899
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 113,416 108,139 106,333 111,675 116,513 115,691 106,203 101,649 100,440 100,000 $ 118,347
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 115,024 109,103 105,960 105,754 108,846 108,585 103,000 100,277 100,245 100,000 $ 119,339
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 $ 117,278 $ 111,050 $ 107,233 $ 106,975 $ 110,183 $ 108,886 $ 104,071 $ 100,991 $ 100,741 $ 100,000 $ 122,009