Basis of Presentation and Accounting Policies - Stock-Based Compensation (Details)	12 Months Ended
Dec. 31, 2022 shares
Restricted Stock Units to be Settled in Common Stock \| Equal Installments
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Restricted Stock Units to be Settled in Common Stock \| Unequal Installments \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	5 years
Restricted Stock Units to be Settled in Common Stock \| Unequal Installments \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	10 years
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Required performance period	3 years
PSUs \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance units performance percentage	0.00%
PSUs \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance units performance percentage	200.00%
PSUs \| Equal Installments
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Restricted Stock Units to be Settled in Cash
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Amount in cash received for each RSU is equal to the fair value of this number of Quanta common stock shares (in shares)	1

Amount in cash received for each RSU is equal to the fair value of this number of Quanta common stock shares.

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- Definition

Performance Based Award Performance Percentage

+ References

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

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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.

+ References

No definition available.

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