XML 117 R102.htm IDEA: XBRL DOCUMENT v3.20.4

Employee Benefit Plans - Summary of Plan Information Relating to Participation in Multiemployer Pension Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Multiemployer Plans [Line Items]
Contributions	$ 121,978	$ 134,197	$ 126,191
National Electrical Benefit Fund
Multiemployer Plans [Line Items]
Contributions	40,902	44,414	35,399
Excavators Union Local 731 Pension Fund
Multiemployer Plans [Line Items]
Contributions	14,310	6,697	0
Central Pension Fund of the IUOE & Participating Employers
Multiemployer Plans [Line Items]
Contributions	8,467	11,638	9,246
Eighth District Electrical Pension Fund
Multiemployer Plans [Line Items]
Contributions	4,272	5,939	3,332
Pipeline Industry Pension Fund
Multiemployer Plans [Line Items]
Contributions	3,654	9,376	10,132
Operating Engineers' Local 324 Pension Fund
Multiemployer Plans [Line Items]
Contributions	2,629	4,315	2,310
Locals 302 & 612 of the IUOE-Employers Construction Industry Retirement Plan
Multiemployer Plans [Line Items]
Contributions	2,368	2,392	2,620
Laborers Pension Trust Fund for Northern California
Multiemployer Plans [Line Items]
Contributions	2,328	2,823	3,652
Local 697 IBEW and Electrical Industry Pension Fund
Multiemployer Plans [Line Items]
Contributions	1,840	3,717	2,656
Plumbers and Pipefitters National Pension Fund
Multiemployer Plans [Line Items]
Contributions	1,453	1,162	2,734
Teamsters National Pipe Line Pension Plan
Multiemployer Plans [Line Items]
Contributions	1,380	3,039	3,318
Pension Trust Fund for Operating Engineers
Multiemployer Plans [Line Items]
Contributions	1,177	956	1,922
Laborers National Pension Fund
Multiemployer Plans [Line Items]
Contributions	638	1,910	2,051
West Virginia Laborers Pension Trust Fund
Multiemployer Plans [Line Items]
Contributions	548	1,693	3,321
Michigan Laborers’ Pension Plan
Multiemployer Plans [Line Items]
Contributions	512	1,491	1,061
International Union of Operating Engineers Local 132 Pension Fund
Multiemployer Plans [Line Items]
Contributions	168	1,289	3,367
Laborers District Council of W PA Pension Fund
Multiemployer Plans [Line Items]
Contributions	77	1,194	1,029
Employer-Teamsters Local Nos 175 & 505 Pension Trust Fund
Multiemployer Plans [Line Items]
Contributions	48	530	1,209
All other plans - U.S.
Multiemployer Plans [Line Items]
Contributions	28,447	23,171	28,314
All other plans - Canada
Multiemployer Plans [Line Items]
Contributions	$ 6,760	$ 6,451	$ 8,518

X

- Definition

Amount of cost for employer contribution to multiemployer plan. Multiemployer plan includes, but is not limited to, pension plan determined to be individually significant and insignificant and other postretirement benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 35
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=29639808&loc=d3e29008-114946

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947

+ Details

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

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_NationalElectricalBenefitFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_ExcavatorsUnionLocal731PensionFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_CentralPensionFundOfIuoeAndParticipatingEmployersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_EighthDistrictElectricalPensionFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_PipelineIndustryPensionFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_OperatingEngineersLocal324PensionFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_Locals302612OftheIUOEEmployersConstructionIndustryRetirementPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_LaborersPensionTrustFundForNorthernCaliforniaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_Local697IBEWAndElectricalIndustryPensionFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_PlumbersAndPipefittersNationalPensionFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_TeamstersNationalPipeLinePensionPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_PensionTrustFundForOperatingEngineersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_LaborersNationalPensionFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_WestVirginiaLaborersPensionTrustFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_MichiganLaborersPensionPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_InternationalUnionOfOperatingEngineersLocal132PensionFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_LaborersDistrictCouncilOfWPAPensionFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_EmployerTeamstersLocalNos175505PensionTrustFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_AllOtherPlansUSMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanNameAxis=pwr_AllOtherPlansCanadaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: