| Document and Entity Information Document | Oct. 10, 2019 |
| Document And Entity Information [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Oct. 10, 2019 |
| Entity Registrant Name | Tallgrass Energy, LP |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-37365 |
| Entity Tax Identification Number | 47-3159268 |
| Entity Address, Address Line One | 4200 W. 115th Street, Suite 350 |
| Entity Address, City or Town | Leawood, |
| Entity Address, State or Province | KS |
| Entity Address, Postal Zip Code | 66211 |
| City Area Code | 913 |
| Local Phone Number | 928-6060 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A Shares Representing Limited Partner Interests |
| Trading Symbol | TGE |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001633651 |
| Amendment Flag | false |
