Cover - shares	3 Months Ended
	Dec. 31, 2025	Feb. 10, 2026
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 31, 2025
Document Transition Report	false
Securities Act File Number	814-01471
Entity Registrant Name	Oaktree Strategic Credit Fund
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	87-6827742
Entity Address, Address Line One	333 South Grand Avenue
Entity Address, Address Line Two	28th Floor
Entity Address, City or Town	Los Angeles
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	90071
City Area Code	213
Local Phone Number	830-6300
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001872371
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	Q1
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Class I shares of beneficial interest, $0.01 par value
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		148,124,805
Class S shares of beneficial interest, $0.01 par value
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		57,762,581
Class D shares of beneficial interest, $0.01 par value
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		406,986
Class T shares of beneficial interest, $0.01 par value
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		154,117