N-2 - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Dec. 31, 2023	Nov. 30, 2023	Oct. 31, 2023	Sep. 30, 2023	Dec. 31, 2022	Nov. 30, 2022	Oct. 31, 2022	Sep. 30, 2022
Cover [Abstract]
Entity Central Index Key	0001872371
Amendment Flag	false
Securities Act File Number	814-01471
Document Type	10-Q
Entity Registrant Name	Oaktree Strategic Credit Fund
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 Emerging Growth Company	true
Entity Ex Transition Period	true
Financial Highlights [Abstract]
Senior Securities Amount	$ 922.8				$ 170.5
General Description of Registrant [Abstract]
NAV Per Share	$ 23.62			$ 23.56	$ 23.23
Common Class I [Member]
General Description of Registrant [Abstract]
NAV Per Share	23.62	$ 23.51	$ 23.39	23.56	23.23	$ 23.46	$ 23.33	$ 23.47
Common Class S [Member]
General Description of Registrant [Abstract]
NAV Per Share	23.62	23.51	23.39	23.56	$ 23.23	$ 23.46	$ 23.33	$ 23.47
Common Class D [Member]
General Description of Registrant [Abstract]
NAV Per Share	$ 23.62	$ 23.51	$ 23.39	$ 23.56