STOCK-BASED COMPENSATION - Grant Date Fair Value for Awards of Performance Units Inputs (Details) - PSUs - $ / shares |
12 Months Ended | |||||
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Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Feb. 27, 2025 |
Mar. 04, 2024 |
Mar. 09, 2023 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||
| Valuation date price based on February 27, 2025, March 4, 2024 and March 9, 2023 closing stock prices of Quanta common stock (in usd per share) | $ 259.26 | $ 243.34 | $ 160.55 | |||
| Expected volatility | 34.00% | 33.00% | 35.00% | |||
| Risk-free interest rate | 4.05% | 4.43% | 4.62% | |||
| Term in years | 2 years 10 months 2 days | 2 years 9 months 29 days | 2 years 9 months 21 days | |||
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Price of a single share of a number of saleable stocks of a company. No definition available.
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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