| Document and Entity Information | Dec. 16, 2019 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001633651 |
| Document Type | 8-K |
| Document Period End Date | Dec. 16, 2019 |
| Entity Registrant Name | Tallgrass Energy, LP |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-37365 |
| Entity Tax Identification Number | 47-3159268 |
| Entity Address, Address Line One | 4200 W. 115th Street |
| Entity Address, Address Line Two | 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 | true |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Class A shares representing limited partner interests |
| Trading Symbol | TGE |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
