v3.26.1
Document and Entity Information
Jun. 24, 2026
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0000916183
Document Type 8-K
Document Period End Date Jun. 24, 2026
Entity Registrant Name PIMCO Strategic Income Fund, Inc.
Entity Incorporation State Country Code MD
Entity File Number 811-08216
Entity Tax Identification Number 94-3194834
Entity Address, Address Line One 1633 Broadway
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10019
City Area Code (844)
Local Phone Number 337-4626
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common shares
Trading Symbol RCS
Security Exchange Name NYSE
Entity Emerging Growth Company false