{"cik":1508655,"taxonomy":"us-gaap","tag":"ProfitLoss","label":"Net Income (Loss), Including Portion Attributable to Noncontrolling Interest","description":"The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.","entityName":"Sixth Street Specialty Lending, Inc.","units":{"USD":[{"start":"2020-01-01","end":"2020-12-31","val":178108000,"accn":"0000950170-23-003042","fy":2022,"fp":"FY","form":"10-K","filed":"2023-02-16","frame":"CY2020"},{"start":"2021-01-01","end":"2021-03-31","val":56652000,"accn":"0000950170-24-015845","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-15","frame":"CY2021Q1"},{"start":"2021-04-01","end":"2021-06-30","val":58354000,"accn":"0000950170-24-015845","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-15","frame":"CY2021Q2"},{"start":"2021-01-01","end":"2021-09-30","val":169962000,"accn":"0000950170-22-020830","fy":2022,"fp":"Q3","form":"10-Q","filed":"2022-11-01"},{"start":"2021-07-01","end":"2021-09-30","val":54956000,"accn":"0000950170-24-015845","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-15","frame":"CY2021Q3"},{"start":"2021-01-01","end":"2021-12-31","val":211780000,"accn":"0000950170-23-003042","fy":2022,"fp":"FY","form":"10-K","filed":"2023-02-16"},{"start":"2021-01-01","end":"2021-12-31","val":211780000,"accn":"0000950170-24-015845","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-15","frame":"CY2021"},{"start":"2021-10-01","end":"2021-12-31","val":41818000,"accn":"0000950170-24-015845","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-15","frame":"CY2021Q4"},{"start":"2022-01-01","end":"2022-03-31","val":40885000,"accn":"0000950170-23-018777","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-05-08"},{"start":"2022-01-01","end":"2022-03-31","val":40885000,"accn":"0000950170-24-015845","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-15"},{"start":"2022-01-01","end":"2022-03-31","val":40885000,"accn":"0000950170-25-019845","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-13","frame":"CY2022Q1"},{"start":"2022-01-01","end":"2022-06-30","val":27360000,"accn":"0000950170-23-038066","fy":2023,"fp":"Q2","form":"10-Q","filed":"2023-08-03"},{"start":"2022-04-01","end":"2022-06-30","val":-13525000,"accn":"0000950170-23-038066","fy":2023,"fp":"Q2","form":"10-Q","filed":"2023-08-03"},{"start":"2022-04-01","end":"2022-06-30","val":-13525000,"accn":"0000950170-24-015845","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-15"},{"start":"2022-04-01","end":"2022-06-30","val":-13525000,"accn":"0000950170-25-019845","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-13","frame":"CY2022Q2"},{"start":"2022-01-01","end":"2022-09-30","val":61791000,"accn":"0000950170-22-020830","fy":2022,"fp":"Q3","form":"10-Q","filed":"2022-11-01"},{"start":"2022-01-01","end":"2022-09-30","val":61791000,"accn":"0000950170-23-058321","fy":2023,"fp":"Q3","form":"10-Q","filed":"2023-11-02"},{"start":"2022-07-01","end":"2022-09-30","val":34431000,"accn":"0000950170-23-058321","fy":2023,"fp":"Q3","form":"10-Q","filed":"2023-11-02"},{"start":"2022-07-01","end":"2022-09-30","val":34431000,"accn":"0000950170-24-015845","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-15"},{"start":"2022-07-01","end":"2022-09-30","val":34431000,"accn":"0000950170-25-019845","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-13","frame":"CY2022Q3"},{"start":"2022-01-01","end":"2022-12-31","val":108053000,"accn":"0000950170-23-003042","fy":2022,"fp":"FY","form":"10-K","filed":"2023-02-16"},{"start":"2022-01-01","end":"2022-12-31","val":108053000,"accn":"0000950170-24-015845","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-15"},{"start":"2022-01-01","end":"2022-12-31","val":108053000,"accn":"0000950170-25-019845","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-13","frame":"CY2022"},{"start":"2022-10-01","end":"2022-12-31","val":46262000,"accn":"0000950170-24-015845","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-15"},{"start":"2022-10-01","end":"2022-12-31","val":46262000,"accn":"0000950170-25-019845","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-13","frame":"CY2022Q4"},{"start":"2023-01-01","end":"2023-03-31","val":52952000,"accn":"0000950170-23-018777","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-05-08"},{"start":"2023-01-01","end":"2023-03-31","val":52952000,"accn":"0000950170-24-015845","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-15"},{"start":"2023-01-01","end":"2023-03-31","val":52952000,"accn":"0000950170-24-051235","fy":2024,"fp":"Q1","form":"10-Q","filed":"2024-05-01"},{"start":"2023-01-01","end":"2023-03-31","val":52952000,"accn":"0000950170-25-019845","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-13"},{"start":"2023-01-01","end":"2023-03-31","val":52952000,"accn":"0001193125-26-048664","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-12","frame":"CY2023Q1"},{"start":"2023-01-01","end":"2023-06-30","val":106042000,"accn":"0000950170-23-038066","fy":2023,"fp":"Q2","form":"10-Q","filed":"2023-08-03"},{"start":"2023-01-01","end":"2023-06-30","val":106042000,"accn":"0000950170-24-088524","fy":2024,"fp":"Q2","form":"10-Q","filed":"2024-07-31"},{"start":"2023-04-01","end":"2023-06-30","val":53090000,"accn":"0000950170-23-038066","fy":2023,"fp":"Q2","form":"10-Q","filed":"2023-08-03"},{"start":"2023-04-01","end":"2023-06-30","val":53090000,"accn":"0000950170-24-015845","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-15"},{"start":"2023-04-01","end":"2023-06-30","val":53090000,"accn":"0000950170-24-088524","fy":2024,"fp":"Q2","form":"10-Q","filed":"2024-07-31"},{"start":"2023-04-01","end":"2023-06-30","val":53090000,"accn":"0000950170-25-019845","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-13"},{"start":"2023-04-01","end":"2023-06-30","val":53090000,"accn":"0001193125-26-048664","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-12","frame":"CY2023Q2"},{"start":"2023-01-01","end":"2023-09-30","val":170862000,"accn":"0000950170-23-058321","fy":2023,"fp":"Q3","form":"10-Q","filed":"2023-11-02"},{"start":"2023-01-01","end":"2023-09-30","val":170862000,"accn":"0000950170-24-121434","fy":2024,"fp":"Q3","form":"10-Q","filed":"2024-11-05"},{"start":"2023-07-01","end":"2023-09-30","val":64820000,"accn":"0000950170-23-058321","fy":2023,"fp":"Q3","form":"10-Q","filed":"2023-11-02"},{"start":"2023-07-01","end":"2023-09-30","val":64820000,"accn":"0000950170-24-015845","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-15"},{"start":"2023-07-01","end":"2023-09-30","val":64820000,"accn":"0000950170-24-121434","fy":2024,"fp":"Q3","form":"10-Q","filed":"2024-11-05"},{"start":"2023-07-01","end":"2023-09-30","val":64820000,"accn":"0000950170-25-019845","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-13"},{"start":"2023-07-01","end":"2023-09-30","val":64820000,"accn":"0001193125-26-048664","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-12","frame":"CY2023Q3"},{"start":"2023-01-01","end":"2023-12-31","val":222023000,"accn":"0000950170-24-015845","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-15"},{"start":"2023-01-01","end":"2023-12-31","val":222023000,"accn":"0000950170-25-019845","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-13"},{"start":"2023-01-01","end":"2023-12-31","val":222023000,"accn":"0001193125-26-048664","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-12","frame":"CY2023"},{"start":"2023-10-01","end":"2023-12-31","val":51161000,"accn":"0000950170-24-015845","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-15"},{"start":"2023-10-01","end":"2023-12-31","val":51161000,"accn":"0000950170-25-019845","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-13"},{"start":"2023-10-01","end":"2023-12-31","val":51161000,"accn":"0001193125-26-048664","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-12","frame":"CY2023Q4"},{"start":"2024-01-01","end":"2024-03-31","val":47518000,"accn":"0000950170-24-051235","fy":2024,"fp":"Q1","form":"10-Q","filed":"2024-05-01"},{"start":"2024-01-01","end":"2024-03-31","val":47518000,"accn":"0000950170-25-019845","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-13"},{"start":"2024-01-01","end":"2024-03-31","val":47518000,"accn":"0000950170-25-061008","fy":2025,"fp":"Q1","form":"10-Q","filed":"2025-04-30"},{"start":"2024-01-01","end":"2024-03-31","val":47518000,"accn":"0001193125-26-048664","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-12","frame":"CY2024Q1"},{"start":"2024-01-01","end":"2024-06-30","val":94919000,"accn":"0000950170-24-088524","fy":2024,"fp":"Q2","form":"10-Q","filed":"2024-07-31"},{"start":"2024-01-01","end":"2024-06-30","val":94919000,"accn":"0000950170-25-100204","fy":2025,"fp":"Q2","form":"10-Q","filed":"2025-07-30"},{"start":"2024-04-01","end":"2024-06-30","val":47401000,"accn":"0000950170-24-088524","fy":2024,"fp":"Q2","form":"10-Q","filed":"2024-07-31"},{"start":"2024-04-01","end":"2024-06-30","val":47401000,"accn":"0000950170-25-019845","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-13"},{"start":"2024-04-01","end":"2024-06-30","val":47401000,"accn":"0000950170-25-100204","fy":2025,"fp":"Q2","form":"10-Q","filed":"2025-07-30"},{"start":"2024-04-01","end":"2024-06-30","val":47401000,"accn":"0001193125-26-048664","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-12","frame":"CY2024Q2"},{"start":"2024-01-01","end":"2024-09-30","val":135575000,"accn":"0000950170-24-121434","fy":2024,"fp":"Q3","form":"10-Q","filed":"2024-11-05"},{"start":"2024-01-01","end":"2024-09-30","val":135575000,"accn":"0001193125-25-264618","fy":2025,"fp":"Q3","form":"10-Q","filed":"2025-11-04"},{"start":"2024-07-01","end":"2024-09-30","val":40655000,"accn":"0000950170-24-121434","fy":2024,"fp":"Q3","form":"10-Q","filed":"2024-11-05"},{"start":"2024-07-01","end":"2024-09-30","val":40655000,"accn":"0000950170-25-019845","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-13"},{"start":"2024-07-01","end":"2024-09-30","val":40655000,"accn":"0001193125-25-264618","fy":2025,"fp":"Q3","form":"10-Q","filed":"2025-11-04"},{"start":"2024-07-01","end":"2024-09-30","val":40655000,"accn":"0001193125-26-048664","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-12","frame":"CY2024Q3"},{"start":"2024-01-01","end":"2024-12-31","val":186566000,"accn":"0000950170-25-019845","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-13"},{"start":"2024-01-01","end":"2024-12-31","val":186566000,"accn":"0001193125-26-048664","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-12","frame":"CY2024"},{"start":"2024-10-01","end":"2024-12-31","val":50992000,"accn":"0000950170-25-019845","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-13"},{"start":"2024-10-01","end":"2024-12-31","val":50992000,"accn":"0001193125-26-048664","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-12","frame":"CY2024Q4"},{"start":"2025-01-01","end":"2025-03-31","val":36955000,"accn":"0000950170-25-061008","fy":2025,"fp":"Q1","form":"10-Q","filed":"2025-04-30"},{"start":"2025-01-01","end":"2025-03-31","val":36955000,"accn":"0001193125-26-048664","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-12"},{"start":"2025-01-01","end":"2025-03-31","val":36955000,"accn":"0001193125-26-206313","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-05","frame":"CY2025Q1"},{"start":"2025-01-01","end":"2025-06-30","val":95957000,"accn":"0000950170-25-100204","fy":2025,"fp":"Q2","form":"10-Q","filed":"2025-07-30"},{"start":"2025-01-01","end":"2025-06-30","val":95957000,"accn":"0001193125-26-332725","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-04"},{"start":"2025-04-01","end":"2025-06-30","val":59003000,"accn":"0000950170-25-100204","fy":2025,"fp":"Q2","form":"10-Q","filed":"2025-07-30"},{"start":"2025-04-01","end":"2025-06-30","val":59003000,"accn":"0001193125-26-048664","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-12"},{"start":"2025-04-01","end":"2025-06-30","val":59003000,"accn":"0001193125-26-332725","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-04","frame":"CY2025Q2"},{"start":"2025-01-01","end":"2025-09-30","val":140557000,"accn":"0001193125-25-264618","fy":2025,"fp":"Q3","form":"10-Q","filed":"2025-11-04"},{"start":"2025-07-01","end":"2025-09-30","val":44600000,"accn":"0001193125-25-264618","fy":2025,"fp":"Q3","form":"10-Q","filed":"2025-11-04"},{"start":"2025-07-01","end":"2025-09-30","val":44600000,"accn":"0001193125-26-048664","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-12","frame":"CY2025Q3"},{"start":"2025-01-01","end":"2025-12-31","val":170517000,"accn":"0001193125-26-048664","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-12","frame":"CY2025"},{"start":"2025-10-01","end":"2025-12-31","val":29959000,"accn":"0001193125-26-048664","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-12","frame":"CY2025Q4"},{"start":"2026-01-01","end":"2026-03-31","val":-26025000,"accn":"0001193125-26-206313","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-05","frame":"CY2026Q1"},{"start":"2026-01-01","end":"2026-06-30","val":14483000,"accn":"0001193125-26-332725","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-04"},{"start":"2026-04-01","end":"2026-06-30","val":40508000,"accn":"0001193125-26-332725","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-04","frame":"CY2026Q2"}]}}