| Document and Entity Information | Jul. 29, 2022 |
| Cover [Abstract] | |
| Amendment Flag | true |
| Entity Central Index Key | 0001389170 |
| Document Type | 8-K/A |
| Document Period End Date | Jul. 29, 2022 |
| Entity Registrant Name | TARGA RESOURCES CORP. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-34991 |
| Entity Tax Identification Number | 20-3701075 |
| Entity Address, Address Line One | 811 Louisiana St |
| Entity Address, Address Line Two | Suite 2100 |
| Entity Address, City or Town | Houston |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 77002 |
| City Area Code | (713) |
| Local Phone Number | 584-1000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common stock |
| Trading Symbol | TRGP |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Description | On August 1, 2022, Targa Resources Corp., a Delaware corporation (NYSE: TRGP) (the “Company”), filed a current report on Form 8-K (the “Original Filing”) in connection with the closing of the acquisition on July 29, 2022 of all of the issued and outstanding interests of Lucid Energy Delaware, LLC, a Delaware limited liability company (“Lucid”) by Lasso Acquiror LLC, a Delaware limited liability company and an indirect wholly-owned subsidiary of the Company. This Current Report on Form 8-K/A is being filed to amend and supplement the Original Filing to include to the audited financial statements of Lucid Energy Group II LLC, a Delaware limited liability company (“Lucid Parent”), and the unaudited pro forma condensed consolidated financial statements of the Company, as required by Item 9.01(a) and Item 9.01(b) of Form 8-K. The Pro Forma financial statements are based on the historical financial statements of Lucid Parent because substantially all of its operating assets and liabilities are those of Lucid. The elimination of specified assets and liabilities not acquired or assumed by the Company is depicted in the pro forma financial statements presenting the effects of the acquisition. No other modifications to the Original Filing are being made by this Form 8-K/A. This Form 8-K/A should be read in connection with the Original Filing. |
