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Investments in Affiliates and Other Entities (Tables) | 6 Months Ended
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Jun. 30, 2023
Investments [Abstract] |
Schedule of Equity Investments | The following table presents Quanta’s equity investments by type (in thousands):
|  | June 30, 2023 |  | December 31, 2022
Equity method investments - integral unconsolidated affiliates |  | $ | 95,550 |  |  | $ | 101,251 |
Equity method investments - non-integral unconsolidated affiliates |  | 28,588 |  |  | 55,833 |
Marketable equity securities |  | — |  |  | — |
Non-marketable equity securities |  | 53,624 |  |  | 54,134 |
Total equity investments |  | $ | 177,762 |  |  | $ | 211,218 |

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