| N-2 | Apr. 30, 2024 |
| Cover [Abstract] | |
| Entity Central Index Key | 0001907437 |
| Amendment Flag | false |
| Document Type | POS EX |
| Entity Registrant Name | OPPORTUNISTIC CREDIT INTERVAL FUND |
| Entity Address, Address Line One | 650 Madison Avenue |
| Entity Address, Address Line Two | 23rd Floor |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10022 |
| City Area Code | (212) |
| Local Phone Number | 891-2880 |
| Exhibits Only, 462(d) | false |
| Entity Well-known Seasoned Issuer | No |
| Entity Emerging Growth Company | false |
| Business Contact [Member] | |
| Cover [Abstract] | |
| Entity Address, Address Line One | Corporation Trust Center |
| Entity Address, Address Line Two | 1209 Orange Street |
| Entity Address, City or Town | Wilmington |
| Entity Address, State or Province | DE |
| Entity Address, Postal Zip Code | 19801 |
| Contact Personnel Name | The Corporation Trust Company |
