XML 77 R65.htm IDEA: XBRL DOCUMENT v3.21.2

Stock-Based Compensation - Additional Information (Details) $ in Thousands, shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) unit	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) unit shares	Jun. 30, 2020 USD ($) shares
Share-based Payment Arrangement [Abstract]
Number of equity incentive plans | unit	2		2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash stock compensation expense	$ 23,923	$ 21,980	$ 42,610	$ 36,892
Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash stock compensation expense			$ 11,000	$ 10,700
Number of common shares issued in connection with performance units (in shares) | shares			0.5	0.5

X

- Definition

Number Of Share-Based Equity Plans

+ References

No definition available.

+ Details

Name:	pwr_NumberOfShareBasedEquityPlans
Namespace Prefix:	pwr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of noncash expense for share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

+ Details

Name:	us-gaap_ShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- 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.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of shares issued under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_AwardTypeAxis=pwr_PerformanceStockUnitsPSUsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: