| Document and Entity Information Document | Jan. 11, 2021 |
| Document Information [Line Items] | |
| Entity Registrant Name | ENERGY TRANSFER OPERATING, L.P. |
| Document Period End Date | Jan. 11, 2021 |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 1-31219 |
| Entity Tax Identification Number | 73-1493906 |
| Entity Central Index Key | 0001161154 |
| Document Type | 8-K |
| Entity Address, Address Line One | 8111 Westchester Drive |
| Entity Address, Address Line Two | Suite 600 |
| Entity Address, State or Province | TX |
| Entity Address, City or Town | Dallas |
| Entity Address, Postal Zip Code | 75225 |
| City Area Code | 214 |
| Local Phone Number | 981-0700 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Series C Preferred Units [Member] | NEW YORK STOCK EXCHANGE, INC. [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 7.375% Series C Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units |
| Trading Symbol | ETPprC |
| Security Exchange Name | NYSE |
| Series D Preferred Units [Member] | NEW YORK STOCK EXCHANGE, INC. [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 7.625% Series D Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units |
| Trading Symbol | ETPprD |
| Security Exchange Name | NYSE |
| Series E Preferred Units [Member] | NEW YORK STOCK EXCHANGE, INC. [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 7.600% Series E Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units |
| Trading Symbol | ETPprE |
| Security Exchange Name | NYSE |
