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Other Retirement Plans (Tables)
 12 Months Ended
Dec. 31, 2022
Retirement Benefits [Abstract]  
Schedule of Multiemployer Pension Plans Details of significant multiemployer pension plans as of and for the periods indicated, based upon information available to the Company from plan administrators as well as publicly available information on the U.S. Department of Labor website, are provided in the following table:
Contributions
(in millions)
For the Years Ended December 31,		Pension Protection Act Zone Status
Multiemployer Pension PlanEmployer Identification NumberPlan Number202220212020Expiration Date of CBA2022As of2021As ofFIP/RP StatusSurcharge
National Electrical Benefit Fund530181657001$17.7 $5.9 $1.6 
Varies through 05/31/2027
Green12/31/2021Green12/31/2020NANo
Local Union No. 9 IBEW and Outside Contractors Pension Fund5160777200019.3 4.7 0.0 5/31/2025Green10/31/2021(a)Green10/31/2020(a)NANo
Central Pension Fund of the IUOE & Participating Employers3660523900018.1 27.4 5.6 
Varies through 4/30/2027
Green1/31/2022Green1/31/2021NANo
Heavy & General Laborers' Local Unions 472 and 172 of New Jersey Pension Fund2260321030013.7 0.0 0.0 2/29/2024Green3/31/2022Green3/31/2021NANo
Construction Laborers' Pension Trust Fund for Southern California4361590560013.4 0.0 0.0 
Varies through 6/30/2026
Green12/31/2021Green12/31/2020NANo
IBEW Local 1249 Pension Plan1560351610013.3 1.4 3.7 
Varies through 12/31/2025
Green12/31/2021Green12/31/2020NANo
IBEW Local 456 Pension Plan2262389950013.2 0.0 0.0 11/29/2025Green12/31/2021(a)Green12/31/2020NANo
Chicago & Vicinity Laborers' District Council Pension Plan3625145140022.5 0.8 0.2 
Varies through 5/31/2026
Green5/31/2021Green5/31/2020NANo
Pipeline Industry Pension Fund7361464330012.3 10.9 2.6 
Varies through 6/4/2023
Green12/31/2021Green12/31/2020NANo
Midwest Operating Engineers Pension Trust Fund3661400970012.1 1.6 1.1 
Varies through 5/31/2025
Green3/31/2022(b)Green3/31/2021(b)NANo
Teamsters National Pipe Line Pension Plan4611028510011.5 6.2 1.8 
Varies through 6/04/2023
Green12/31/2021(a)Green12/31/2020(a)NANo
San Diego County Construction Laborers' Pension Trust Fund9560905410011.5 0.0 0.0 6/30/2026Green8/31/2021Green8/31/2020NANo
Laborers' Local Union No. 158 Pension Plan2365803230011.5 0.7 0.9 
Varies through 05/31/27
Green12/31/2021(a)Green12/31/2020(a)NANo
Southern California Pipe Trades Retirement Fund5161084430011.4 0.0 0.0 4/30/2025Green12/31/2021Green12/31/2020NANo
Central Laborers' Pension Fund3760523790011.3 1.3 0.8 
Varies through 4/30/2027
Yellow12/31/2021(b)Yellow12/31/2020(b)ImplementedNo
West Virginia Laborers' Pension Trust Fund5560267750010.9 2.5 1.4 
Varies through 6/4/2023
Green3/31/2022(a)Green3/31/2021(a)NANo
Minnesota Laborers' Pension Fund4161595990010.7 5.1 0.8 
Varies through 5/31/2023
Green12/31/2021Green12/31/2020NANo
Laborers' National Pension Fund7512808270010.6 3.8 0.8 
Varies through 6/30/2025
Red12/31/2021(a)Red12/31/2020ImplementedNo
Employer- Teamsters Local Nos. 175 & 505 Pension Trust Fund5560218500010.5 0.6 0.6 5/31/2023Red12/31/2021(b)Red12/31/2020(a), (b)ImplementedNo
Laborers' District Council of Western Pennsylvania Pension Fund2561355760010.5 3.1 1.8 
Varies through 3/31/2025
Yellow12/31/2021Yellow12/31/2020ImplementedNo
Other funds23.0 18.0 6.3 
Total multiemployer pension plan contributions$89.0 $94.0 $30.0 
(a)The Company’s contributions to this plan represent greater than 5% of the plan’s total contributions.
(b)This plan has utilized extended amortization provisions, which provide plans with extensions of time to amortize pension funding shortfalls.
Schedule of Covered Employees and Contributions, Multiemployer Plans Total contributions to multiemployer plans and the related number of employees covered by these plans for the periods indicated were as follows:
Multiemployer Plans
Covered Employees
Contributions
(in millions)
For the Years Ended December 31:LowHighPensionOther MultiemployerTotal
20226,601 7,136 $89.0 $56.3 $145.3 
20212,412 6,979 $94.0 $34.1 $128.1 
20201,119 2,412 $30.0 $7.5 $37.5