The Cushing MLP & Infrastructure Total Return Fund (SRV)
Company Profile
| Cover | May 20, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 20, 2024 |
| Entity File Number | 811-22072 |
| Entity Registrant Name | NXG Cushing® Midstream Energy Fund |
| Entity Central Index Key | 0001400897 |
| Entity Tax Identification Number | 35-2303963 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 600 N. Pearl Street |
| Entity Address, Address Line Two | Suite 1205 |
| Entity Address, City or Town | Dallas |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 75201 |
| City Area Code | 214 |
| Local Phone Number | 692-6334 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Shares of Beneficial Interest |
| Trading Symbol | SRV |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |