| N-2 | 6 Months Ended |
| Mar. 31, 2024 shares | |
| Cover [Abstract] | |
| Entity Central Index Key | 0001566388 |
| Amendment Flag | false |
| Document Type | N-CSRS |
| Entity Registrant Name | DoubleLine Income Solutions Fund |
| General Description of Registrant [Abstract] | |
| Risk Factors [Table Text Block] | 10. Principal Risks Below are summaries of some, but not all, of the principal risks of investing in the Fund, each of which could adversely affect the Fund’s NAV, market price, yield, and total return. The Fund’s prospectus provided additional information regarding these and other risks of investing in the Fund at the time of the initial public offering of the Fund’s shares. • asset-backed securities investment risk: • collateralized debt obligations risk: e.g. • confidential information access risk: • counterparty risk: • credit default swaps risk: • credit risk: an obligor’s ability to honor its obligations when due. The values of lower-quality debt securities (commonly known as “junk bonds”), including floating rate loans, tend to be particularly sensitive to these changes. The values of securities or instruments also may decline for a number of other reasons that relate directly to the obligor, such as management performance, financial leverage, and reduced demand for the obligor’s goods and services, as well as the historical and prospective earnings of the obligor and the value of its assets. • derivatives risk: • emerging markets risk: • equity issuer risk: • foreign currency risk: • foreign investment risk: • high yield risk: • interest rate risk: • inverse floaters and related securities risk: • investment and market risk • issuer risk: • leverage risk: • liquidity risk: • loan risk: • market discount risk: • market disruption and geopolitical risk: • mortgage-backed securities risk: floaters and interest-only and principal-only securities, may be extremely sensitive to changes in interest rates and prepayment rates. The Fund may invest in mortgage-backed securities that are subordinate in their right to receive payment of interest and re-payment of principal to other classes of the issuer’s securities. • operational and information security risks: • restricted securities risk: • sovereign debt obligations risk: |
| Capital Stock, Long-Term Debt, and Other Securities [Abstract] | |
| Outstanding Security, Authorized [Shares] | 105,621,345 |
| Asset Backed Securities Investment Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • asset-backed securities investment risk: |
| Collateralized Debt Obligations Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • collateralized debt obligations risk: e.g. |
| Confidential Information Access Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • confidential information access risk: |
| Counterparty Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • counterparty risk: |
| Credit Default Swaps Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • credit default swaps risk: |
| Credit Risks [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • credit risk: an obligor’s ability to honor its obligations when due. The values of lower-quality debt securities (commonly known as “junk bonds”), including floating rate loans, tend to be particularly sensitive to these changes. The values of securities or instruments also may decline for a number of other reasons that relate directly to the obligor, such as management performance, financial leverage, and reduced demand for the obligor’s goods and services, as well as the historical and prospective earnings of the obligor and the value of its assets. |
| Derivatives Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • derivatives risk: |
| Emerging Markets Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • emerging markets risk: |
| Equity Issuer Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • equity issuer risk: |
| Foreign Currency Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • foreign currency risk: |
| Foreign Investment Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • foreign investment risk: |
| High Yield Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • high yield risk: |
| Inverse Floaters And Related Securities Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • inverse floaters and related securities risk: |
| Investment And Market Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • investment and market risk |
| Issuer Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • issuer risk: |
| leverage risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • leverage risk: |
| Liquidity Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • liquidity risk: |
| Loan Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • loan risk: |
| Market Discount Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • market discount risk: |
| Market Disruption And Geopolitical Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • market disruption and geopolitical risk: |
| Mortgage Backed Securities Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • mortgage-backed securities risk: floaters and interest-only and principal-only securities, may be extremely sensitive to changes in interest rates and prepayment rates. The Fund may invest in mortgage-backed securities that are subordinate in their right to receive payment of interest and re-payment of principal to other classes of the issuer’s securities. |
| Operational And Information Security Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • operational and information security risks: |
| Restricted Securities Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • restricted securities risk: |
| Sovereign Debt Obligations Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • sovereign debt obligations risk: |
| Interest Rate Risk [Member] | |
| General Description of Registrant [Abstract] | |
| Risk [Text Block] | • interest rate risk: |
