| Cover | Nov. 13, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 13, 2023 |
| Entity File Number | 814-01091 |
| Entity Registrant Name | Guggenheim Credit Income Fund 2019 |
| Entity Central Index Key | 0001618696 |
| Entity Tax Identification Number | 47-2009064 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 330 Madison Avenue |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10017 |
| City Area Code | 212 |
| Local Phone Number | 739-0700 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
