Summary of Significant Accounting Policies - Stock-Based Compensation (Details)	3 Months Ended
Mar. 31, 2020 shares
Restricted Stock Units to be Settled in Cash
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount in cash received for each RSU is equal to the fair value of this number of Quanta common stock shares (in shares)	1

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.

No definition available.

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