| Cover | 12 Months Ended |
| Dec. 31, 2022 | |
| Document Information [Line Items] | |
| Document Type | DEF 14A |
| Amendment Flag | false |
| Entity Information [Line Items] | |
| Entity Registrant Name | Targa Resources Corp. |
| Entity Central Index Key | 0001389170 |
| Pay vs Performance Disclosure | 12 Months Ended | ||
| Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | |
| Pay vs Performance Disclosure [Table] | |||
| Pay vs Performance [Table Text Block] | Pay Versus Performance As required by Item 402(v) of Regulation S-K, providing information The following table summarizes compensation values reported in the Summary Compensation Table for our PEO and the average for our other NEOs, as compared to “compensation actually paid” or “CAP” and the Company’s financial performance for the years ended December 31, 2022, 2021, and 2020: Year Summary (1) Compensation (1) Summary (1) Compensation (1) (2) Average Non-PEO (1) Average Non-PEO (1) (2) Value of Initial Net (In Adjusted (in TSR Peer (3) (a) (b) (c) (b) (c) (d) (e) (f) (g) (h) (i) 2022 N/A N/A $ 15,202,542 $ 39,196,628 $ 4,719,589 $ 11,823,921 $ 194.07 $ 140.99 $ 1,531.4 $ 2,901.1 2021 N/A N/A $ 14,691,940 $ 40,278,218 $ 4,364,561 $ 12,154,312 $ 135.07 $ 108.82 $ 422.1 $ 2,052.0 2020 $ 11,213,260 $ 3,897,160 $ 12,102,596 $ 7,050,069 $ 3,598,338 $ 1,236,586 $ 67.48 $ 75.04 $ (1,325.1 ) $ 1,636.6 (1) The first and second PEOs reflected in columns (b) and (c) represent Joe Bob Perkins and Matthew J. Meloy, respectively. Both men served as our PEO during periods of the 2020 year. The non-PEO (2) The Company deducted from and added to the Summary Compensation Table total compensation in the following amounts to calculate compensation actually paid in accordance with Item 402(v) of Regulation S-K Non-PEO (3) The peer group that we have used for purposes of this Pay Versus Performance section is the Alerian US Midstream Energy Index, which is the same index that we use for our stock performance graph each year within our Annual Report on Form 10-K. | ||
| Company Selected Measure Name | Adjusted EBITDA | ||
| Named Executive Officers, Footnote [Text Block] | The first and second PEOs reflected in columns (b) and (c) represent Joe Bob Perkins and Matthew J. Meloy, respectively. Both men served as our PEO during periods of the 2020 year. The non-PEO | ||
| Peer Group Issuers, Footnote [Text Block] | The peer group that we have used for purposes of this Pay Versus Performance section is the Alerian US Midstream Energy Index, which is the same index that we use for our stock performance graph each year within our Annual Report on Form 10-K. | ||
| Adjustment To PEO Compensation, Footnote [Text Block] | 2020 First PEO Summary Compensation Table Totals $ 11,213,260 Add (Subtract): Fair value of equity awards granted during the year from the Summary Compensation Table (9,504,775 ) Fair value at year end of equity awards granted during the year 6,867,379 Fair value of equity awards granted and vested during the year - Change in fair value of equity awards granted in prior years that were unvested as of the end of the year (5,940,176 ) Change in fair value of equity awards granted in prior years that vested during the year 28,939 Equity awards granted in prior years that were forfeited during the year - Dividends or other earnings paid on equity awards during the year 1,232,533 Total Equity Award Related Adjustments (7,316,100 ) Compensation Actually Paid Totals $ 3,897,160 2022 2021 2020 Second PEO Summary Compensation Table Totals $ 15,202,542 $ 14,691,940 $ 12,102,596 Add (Subtract): Fair value of equity awards granted during the year from the Summary Compensation Table (10,675,003 ) (10,289,456 ) (9,548,519 ) Fair value at year end of equity awards granted during the year 15,599,736 22,519,263 7,134,959 Fair value of equity awards granted and vested during the year - - - Change in fair value of equity awards granted in prior years that were unvested as of the end of the year 17,712,899 12,300,127 (3,098,679 ) Change in fair value of equity awards granted in prior years that vested during the year 592,841 262,893 12,060 Equity awards granted in prior years that were forfeited during the year - - - Dividends or other earnings paid on equity awards during the year 763,613 793,451 447,652 Total Equity Award Related Adjustments 23,994,086 25,586,278 (5,052,527 ) Compensation Actually Paid Totals $ 39,196,628 $ 40,278,218 $ 7,050,069 | ||
| Non-PEO NEO Average Total Compensation Amount | $ 4,719,589 | $ 4,364,561 | $ 3,598,338 |
| Non-PEO NEO Average Compensation Actually Paid Amount | $ 11,823,921 | 12,154,312 | 1,236,586 |
| Adjustment to Non-PEO NEO Compensation Footnote [Text Block] | 2022 2021 2020 Non-PEO Compensation Table Totals $ 4,719,589 $ 4,364,561 $ 3,598,338 Add (Subtract): Fair value of equity awards granted during the year from the Summary Compensation Table (2,952,286 ) (2,726,230 ) (2,529,936 ) Fair value at year end of equity awards granted during the year 4,314,273 5,966,563 1,890,448 Fair value of equity awards granted and vested during the year - - - Change in fair value of equity awards granted in prior years that were unvested as of the end of the year 4,942,685 4,008,905 (1,945,193 ) Change in fair value of equity awards granted in prior years that vested during the year 319,887 107,348 8,576 Equity awards granted in prior years that were forfeited during the year - - - Dividends or other earnings paid on equity awards during the year 479,773 433,165 214,353 Total Equity Award Related Adjustments 7,104,332 7,789,751 (2,361,752 ) Average Compensation Actually Paid Totals $ 11,823,921 $ 12,154,312 $ 1,236,586 | ||
| Compensation Actually Paid vs. Total Shareholder Return [Text Block] | |||
| Compensation Actually Paid vs. Net Income [Text Block] | |||
| Compensation Actually Paid vs. Company Selected Measure [Text Block] | |||
| Total Shareholder Return Vs Peer Group [Text Block] | |||
| Tabular List [Table Text Block] | Most Important Performance Measures for Fiscal Year 2022 The measures listed below represent the most important financial performance measures that we used to determine CAP for fiscal year 2022 as further described in our CD&A. Most Important Financial Performance Measures Adjusted EBITDA Distributable Cash Flow per Share Relative TSR | ||
| Total Shareholder Return Amount | $ 194.07 | 135.07 | 67.48 |
| Peer Group Total Shareholder Return Amount | 140.99 | 108.82 | 75.04 |
| Net Income (Loss) | $ 1,531,400,000 | $ 422,100,000 | $ (1,325,100,000) |
| Company Selected Measure Amount | 2,901,100,000 | 2,052,000,000 | 1,636,600,000 |
| Measure [Axis]: 1 | |||
| Pay vs Performance Disclosure [Table] | |||
| Measure Name | Adjusted EBITDA | ||
| Measure [Axis]: 2 | |||
| Pay vs Performance Disclosure [Table] | |||
| Measure Name | Distributable Cash Flow per Share | ||
| Measure [Axis]: 3 | |||
| Pay vs Performance Disclosure [Table] | |||
| Measure Name | Relative TSR | ||
| RSU [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Percentage of Total Compensation to be paid | 50% | ||
| PSU [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Percentage of Total Compensation to be paid | 50% | ||
| Joe Bob Perkins [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| PEO Total Compensation Amount | $ 11,213,260 | ||
| PEO Actually Paid Compensation Amount | $ 3,897,160 | ||
| PEO Name | Joe Bob Perkins | ||
| Matthew J. Meloy [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| PEO Total Compensation Amount | $ 15,202,542 | $ 14,691,940 | $ 12,102,596 |
| PEO Actually Paid Compensation Amount | $ 39,196,628 | $ 40,278,218 | $ 7,050,069 |
| PEO Name | Matthew J. Meloy | Matthew J. Meloy | Matthew J. Meloy |
| PEO [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Targeted percentage of Total Compensation to be paid | 73% | ||
| PEO [Member] | Joe Bob Perkins [Member] | Fair value of equity awards granted during the year [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | $ (9,504,775) | ||
| PEO [Member] | Joe Bob Perkins [Member] | Fair value at year end of equity awards granted during the year [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 6,867,379 | ||
| PEO [Member] | Joe Bob Perkins [Member] | Change in fair value of equity awards granted in prior years that were unvested as of the end of the year [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | (5,940,176) | ||
| PEO [Member] | Joe Bob Perkins [Member] | Change in fair value of equity awards granted in prior years that vested during the year [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 28,939 | ||
| PEO [Member] | Joe Bob Perkins [Member] | Dividends or other earnings paid on equity awards during the year [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 1,232,533 | ||
| PEO [Member] | Joe Bob Perkins [Member] | Total Equity Award Related Adjustments [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | (7,316,100) | ||
| PEO [Member] | Matthew J. Meloy [Member] | Fair value of equity awards granted during the year [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | $ (10,675,003) | $ (10,289,456) | (9,548,519) |
| PEO [Member] | Matthew J. Meloy [Member] | Fair value at year end of equity awards granted during the year [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 15,599,736 | 22,519,263 | 7,134,959 |
| PEO [Member] | Matthew J. Meloy [Member] | Change in fair value of equity awards granted in prior years that were unvested as of the end of the year [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 17,712,899 | 12,300,127 | (3,098,679) |
| PEO [Member] | Matthew J. Meloy [Member] | Change in fair value of equity awards granted in prior years that vested during the year [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 592,841 | 262,893 | 12,060 |
| PEO [Member] | Matthew J. Meloy [Member] | Dividends or other earnings paid on equity awards during the year [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 763,613 | 793,451 | 447,652 |
| PEO [Member] | Matthew J. Meloy [Member] | Total Equity Award Related Adjustments [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | $ 23,994,086 | 25,586,278 | (5,052,527) |
| Non-PEO NEO [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Targeted percentage of Total Compensation to be paid | 64% | ||
| Non-PEO NEO [Member] | Fair value of equity awards granted during the year [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | $ (2,952,286) | (2,726,230) | (2,529,936) |
| Non-PEO NEO [Member] | Fair value at year end of equity awards granted during the year [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 4,314,273 | 5,966,563 | 1,890,448 |
| Non-PEO NEO [Member] | Change in fair value of equity awards granted in prior years that were unvested as of the end of the year [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 4,942,685 | 4,008,905 | (1,945,193) |
| Non-PEO NEO [Member] | Change in fair value of equity awards granted in prior years that vested during the year [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 319,887 | 107,348 | 8,576 |
| Non-PEO NEO [Member] | Dividends or other earnings paid on equity awards during the year [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | 479,773 | 433,165 | 214,353 |
| Non-PEO NEO [Member] | Total Equity Award Related Adjustments [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Adjustment to Compensation Amount | $ 7,104,332 | $ 7,789,751 | $ (2,361,752) |
