Cross-default provisions.

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Debt Instrument, Covenant, Acquisition Threshold For Leverage Ratio

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Debt Instrument, Covenant, Interest Coverage Ratio, Minimum

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Debt Instrument, Covenant, Leverage Ratio, Maximum

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Debt Instrument, Covenant, Number Of Fiscal Quarters Applicable To Interest Coverage Ratio

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Debt Instrument, Covenant, Number Of Fiscal Quarters Applicable To Updated Acquisition Ratio

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Debt Instrument, Variable Rate Floor

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Amount of availability under the credit agreement and/or cash and cash equivalents on hand that must be present to allow for cash payments of dividends and stock repurchases.

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No definition available.

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Line of Credit, Debt Covenant, Maximum Amount Outstanding

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Line Of Credit Facility, Covenant, Maximum Leverage Ratio

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Line Of Credit Facility, Option To Increase, Amount

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Reduction in Quanta's maximum funded debt and maximum senior debt by all cash and cash equivalents in excess of amount.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount of the required periodic payments including both interest and principal payments.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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Debt Obligations - Senior Credit Facility (Details) $ in Thousands					12 Months Ended
	Aug. 23, 2022	Aug. 22, 2022	Oct. 07, 2021	Sep. 22, 2020	Dec. 31, 2023 USD ($) quarter	Dec. 31, 2022 USD ($)
Line of Credit Facility [Line Items]
Borrowings under line of credit					$ 867,137	$ 786,910
Senior Credit Facility
Line of Credit Facility [Line Items]
Option to increase revolving commitments under the credit agreement					400,000
Reduction in Quanta's funded indebtedness reduced by cash and cash equivalents in excess of this amount					$ 25,000
Number of fiscal quarters applicable to interest coverage ratio \| quarter					4
Credit facility available for revolving loans or issuing new letters of credit					$ 1,520,000
Senior Credit Facility \| Excess of Federal Funds Rate
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	0.50%		0.50%
Senior Credit Facility \| Excess of Euro Currency Rate
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate			1.00%
Senior Credit Facility \| Minimum
Line of Credit Facility [Line Items]
Commitment fee	0.10%		0.275%	0.20%
Senior Credit Facility \| Minimum \| Excess of Eurocurrency Rate Applicable to Domestic Borrowings Only
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate			1.125%
Senior Credit Facility \| Minimum \| Excess of Base Rate Domestic Borrowings Only
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate			0.125%
Senior Credit Facility \| Minimum \| Excess of Euro Currency Rate of Credit Agreement for Foreign Borrowings
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate			1.125%
Senior Credit Facility \| Maximum
Line of Credit Facility [Line Items]
Commitment fee	0.275%		0.425%	0.40%
Senior Credit Facility \| Maximum \| Excess of Eurocurrency Rate Applicable to Domestic Borrowings Only
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate			2.00%
Senior Credit Facility \| Maximum \| Excess of Base Rate Domestic Borrowings Only
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate			1.00%
Senior Credit Facility \| Maximum \| Excess of Euro Currency Rate of Credit Agreement for Foreign Borrowings
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate			2.00%
Senior Credit Facility \| Line of Credit
Line of Credit Facility [Line Items]
Maximum consolidated leverage ratio					3.5
Acquisition threshold for leverage ratio					$ 200,000
Maximum consolidated leverage ratio permissible under credit agreement					4.0
Number of fiscal quarters applicable to updated acquisition ratio \| quarter					4
Minimum consolidated interest coverage ratio					3.0
Amount of availability under the credit agreement and/or cash and cash equivalents on hand that must be present to allow for cash payments of dividends and stock repurchases					$ 100,000
Cross default provisions with debt instruments exceeding this amount					300,000
Borrowings under line of credit					135,800
Senior Credit Facility \| Term Loan \| Payments Due First Business Day Of Quarter In 2023 And 2024
Line of Credit Facility [Line Items]
Quarterly principal payments					4,700
Senior Credit Facility \| Term Loan \| Payments Due First Business Day Of Quarter In 2025
Line of Credit Facility [Line Items]
Quarterly principal payments					9,400
Senior Credit Facility \| Term Loan \| Payments Due First Business Day Of Quarter In 2026
Line of Credit Facility [Line Items]
Quarterly principal payments					18,800
Senior Credit Facility \| Term Loan \| Line of Credit
Line of Credit Facility [Line Items]
Senior secured revolving credit facility					750,000
Borrowings under line of credit					731,300
Interest rate floor	1.00%
Senior Credit Facility \| Term Loan \| Line of Credit \| Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	1.00%
Senior Credit Facility \| Term Loan \| Line of Credit \| Fed Funds Effective Rate Overnight Index Swap Rate
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate		0.50%
Senior Credit Facility \| Term Loan \| Line of Credit \| London Interbank Offered Rate (LIBOR)
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate		1.00%
Senior Credit Facility \| Term Loan \| Line of Credit \| Minimum \| Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	1.00%
Senior Credit Facility \| Term Loan \| Line of Credit \| Minimum \| Base Rate
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	0.00%	0.00%
Senior Credit Facility \| Term Loan \| Line of Credit \| Minimum \| London Interbank Offered Rate (LIBOR)
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate		1.00%
Senior Credit Facility \| Term Loan \| Line of Credit \| Maximum \| Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	1.625%
Senior Credit Facility \| Term Loan \| Line of Credit \| Maximum \| Base Rate
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	0.625%	0.625%
Senior Credit Facility \| Term Loan \| Line of Credit \| Maximum \| London Interbank Offered Rate (LIBOR)
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate		1.625%
Senior Credit Facility \| Revolving Credit Facility \| Line of Credit
Line of Credit Facility [Line Items]
Senior secured revolving credit facility					2,640,000
Senior Credit Facility \| Revolving Credit Facility \| Line of Credit \| Minimum \| Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	1.125%
Senior Credit Facility \| Revolving Credit Facility \| Line of Credit \| Minimum \| Base Rate
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	0.125%
Senior Credit Facility \| Revolving Credit Facility \| Line of Credit \| Minimum \| Alternative Currency Term Rate
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	1.125%
Senior Credit Facility \| Revolving Credit Facility \| Line of Credit \| Maximum \| Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	1.75%
Senior Credit Facility \| Revolving Credit Facility \| Line of Credit \| Maximum \| Base Rate
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	0.75%
Senior Credit Facility \| Revolving Credit Facility \| Line of Credit \| Maximum \| Alternative Currency Term Rate
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	1.75%
Senior Credit Facility \| Standby Letters of Credit \| Minimum
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	1.125%		1.125%
Senior Credit Facility \| Standby Letters of Credit \| Maximum
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	1.75%		2.00%
Senior Credit Facility \| Performance Letters of Credit \| Minimum
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	0.675%		0.675%
Senior Credit Facility \| Performance Letters of Credit \| Maximum
Line of Credit Facility [Line Items]
Debt instrument basis spread on variable rate	1.125%		1.15%
Senior Credit Facility \| Letters of Credit
Line of Credit Facility [Line Items]
Letters of credit and bank guarantees under the credit facility					274,200
Senior Credit Facility \| Letters of Credit and Bank Guarantees \| Canadian Dollars
Line of Credit Facility [Line Items]
Letters of credit and bank guarantees under the credit facility					177,100
Senior Credit Facility \| Letters of Credit and Bank Guarantees \| U.S. Dollars
Line of Credit Facility [Line Items]
Letters of credit and bank guarantees under the credit facility					97,100
Surety-Backed Letters Of Credit
Line of Credit Facility [Line Items]
Limit on surety-backed line of credit					300,000
Letters of credit and bank guarantees under the credit facility					$ 433,300