Other Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2020

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 Plan

Employer Identification Number

Plan Number

2020

2019

2018

Expiration Date of CBA

2020

As of

2019

As of

FIP/RP Status

Surcharge

Central Pension Fund of the IUOE & Participating Employers

366052390

001

$

5.6

$

12.6

$

20.4

5/31/2023

Green

1/31/2020

Green

1/31/2019

NA

No

IBEW Local 1249 Pension Plan

156035161

001

3.7

3.2

2.2

5/2/2021

Green

12/31/2019

Green

12/31/2018

NA

No

Pipeline Industry Pension Fund

736146433

001

2.6

9.6

20.7

5/31/2023

Green

12/31/2019

(a)

Green

12/31/2018

(a)

NA

No

Teamsters National Pipe Line Pension Plan

461102851

001

1.8

4.5

7.4

5/31/2023

Green

12/31/2019

(a)

Green

12/31/2018

(a)

NA

No

Laborers' District Council of Western Pennsylvania Pension Fund

256135576

001

1.8

1.9

1.4

5/31/2023

Yellow

12/31/2019

Yellow

12/31/2018

Implemented

No

National Electrical Benefit Fund

530181657

001

1.6

1.2

1.4

Varies through 12/31/2023

Green

12/31/2019

Green

12/31/2018

NA

No

West Virginia Laborers' Pension Trust Fund

556026775

001

1.4

4.9

4.5

5/31/2023

Green

3/31/2020

(a)

Green

3/31/2019

(a)

NA

No

International Union of Operating Engineers Local 132 Pension Fund

556015364

001

1.2

5.0

5.6

5/31/2023

Green

3/31/2020

(a)

Green

3/31/2019

(a)

NA

No

Midwest Operating Engineers Pension Trust Fund

366140097

001

1.1

1.8

1.5

5/31/2023

Green

3/31/2020

(b)

Yellow

3/31/2019

(b)

NA

No

Laborers' Local Union No. 158 Pension Plan

236580323

001

0.9

1.5

1.5

5/31/2023

Green

12/31/2019

(a)

Green

12/31/2018

(a)

NA

No

Central Laborers' Pension Fund

376052379

001

0.8

1.3

0.9

5/31/2023

Yellow

12/31/2019

(b)

Yellow

12/31/2018

(b)

Implemented

No

Laborers' National Pension Fund

751280827

001

0.8

3.0

4.1

5/31/2023

Red

12/31/2019

Red

12/31/2018

(a)

Implemented

No

Employer - Teamsters Local Nos. 175 & 505 Pension Trust Fund

556021850

001

0.6

1.7

1.5

5/31/2023

Red

12/31/2019

(a), (b)

Red

12/31/2018

(a), (b)

Implemented

No

Laborers District Council & Contractors Pension Fund of Ohio

316129964

001

0.4

1.4

1.8

5/31/2023

Green

12/31/2019

Green

12/31/2018

NA

No

Michigan Laborers' Pension Plan

386233976

001

0.4

1.1

1.5

5/31/2023

Yellow

8/31/2020

Yellow

8/31/2019

(b)

Implemented

No

Laborers' Pension Fund of Roanoke, Virginia

546111015

001

0.3

1.5

2.5

5/31/2023

Green

9/30/2019

(a)

Green

9/30/2018

(a)

NA

No

Other funds

5.0

10.7

13.5

Total multiemployer pension plan contributions

$

30.0

$

66.9

$

92.4

(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 were as follows:

	Multiemployer Plans
	Covered Employees		Contributions (in millions)
For the Years Ended December 31:	Low	High	Pension		Other Multiemployer		Total
2020	1,119	2,412	$	30.0	$	7.5	$	37.5
2019	1,119	5,349	$	66.9	$	5.7	$	72.6
2018	1,626	6,336	$	92.4	$	7.3	$	99.7