| Assets | — | — |
| Current assets | — | — |
| Cash and cash equivalents | 157.3a | 141.7a |
| Trade receivables, net of allowances of $2.5 million and $2.5 million as of December 31, 2024 and 2023 | 1,618.3a | 1,471a |
| Inventories | 334.3a | 371.5a |
| Assets from risk management activities | 61.8a | 111.9a |
| Other current assets | 124.6a | 98.5a |
| Total current assets | 2,296.3a | 2,194.6a |
| Property, plant and equipment, net | 18,062.7a | 15,806.4a |
| Intangible assets, net | 1,977.4a | 2,350.6a |
| Long-term assets from risk management activities | 25.3a | 33.3a |
| Investments in unconsolidated affiliates | 193.3a | 146.3a |
| Other long-term assets | 179.1a | 140.6a |
| Total assets | 22,734.1a | 20,671.8a |
| Liabilities and owners’ equity | — | — |
| Current liabilities | — | — |
| Accounts payable | 2,012.5a | 1,574.9a |
| Accrued liabilities | 336a | 281.7a |
| Interest payable | 269.1a | 229.6a |
| Liabilities from risk management activities | 167.3a | 54a |
| Current debt obligations | 387.7a | 620.7a |
| Total current liabilities | 3,172.6a | 2,760.9a |
| Long-term debt | 13,786.9a | 12,333.2a |
| Long-term liabilities from risk management activities | 92a | 16.8a |
| Deferred income taxes, net | 872.1a | 535.8a |
| Other long-term liabilities | 392.3a | 415.1a |
| Owners’ equity | — | — |
| Targa Resources Corp. stockholders’ equity | — | — |
| Common stock | 0.2a | 0.2a |
| Additional paid-in capital | 3,089.1a | 3,058.8a |
| Retained earnings (deficit) | 1,190a | 492a |
| Accumulated other comprehensive income (loss) | 27.5a | 85.6a |
| Treasury stock, at cost | -1,714.4a | -896.9a |
| Total Targa Resources Corp. stockholders’ equity | 2,592.4a | 2,739.7a |
| Noncontrolling interests | 1,825.8a | 1,870.3a |
| Total owners’ equity | 4,418.2a | 4,610a |
| Total liabilities and owners’ equity | 22,734.1a | 20,671.8a |