Other Retirement Plans - Schedule of Multiemployer Pension Plans (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Multiemployer Plans [Line Items]
Other funds	$ 15.0	$ 6.7	$ 16.1
Total multiemployer pension plan contributions	$ 128.1	37.5	72.6
National Electrical Benefit Fund
Multiemployer Plans [Line Items]
Employer Identification Number	530181657
Plan Number	001
Contributions (in millions) For the Years Ended December 31,	$ 5.9	$ 1.6	1.2
Expiration Date of CBA	May 31, 2026
Pension Protection Act Zone Status	Green	Green
Pension Protection Act Zone Status, Date	Dec. 31, 2020	Dec. 31, 2019
FIP/RP Status	NA
Surcharge	No
IBEW Local 1249 Pension Plan
Multiemployer Plans [Line Items]
Employer Identification Number	156035161
Plan Number	001
Contributions (in millions) For the Years Ended December 31,	$ 1.4	$ 3.7	3.2
Expiration Date of CBA	May 04, 2025
Pension Protection Act Zone Status	Green	Green
Pension Protection Act Zone Status, Date	Dec. 31, 2020	Dec. 31, 2019
FIP/RP Status	NA
Surcharge	No
Local Union 9 IBEW and Outside Contractors Pension Fund
Multiemployer Plans [Line Items]
Employer Identification Number	516077720
Plan Number	001
Contributions (in millions) For the Years Ended December 31,	$ 4.7	$ 0.0	0.0
Expiration Date of CBA	May 31, 2025
Pension Protection Act Zone Status	Green	Green
Pension Protection Act Zone Status, Date	Oct. 31, 2020	Oct. 31, 2019
FIP/RP Status	NA
Surcharge	No
Multiemployer pension plans, Company contributions greater than 5% of total plan contributions	true	true
Central Pension Fund of the IUOE & Participating Employers
Multiemployer Plans [Line Items]
Employer Identification Number	366052390
Plan Number	001
Contributions (in millions) For the Years Ended December 31,	$ 27.4	$ 5.6	12.6
Expiration Date of CBA	May 31, 2027
Pension Protection Act Zone Status	Green	Green
Pension Protection Act Zone Status, Date	Jan. 31, 2021	Jan. 31, 2020
FIP/RP Status	NA
Surcharge	No
Laborers' District Council of Western Pennsylvania Pension Fund
Multiemployer Plans [Line Items]
Employer Identification Number	256135576
Plan Number	001
Contributions (in millions) For the Years Ended December 31,	$ 3.1	$ 1.8	1.9
Expiration Date of CBA	May 31, 2023
Pension Protection Act Zone Status	Yellow	Yellow
Pension Protection Act Zone Status, Date	Dec. 31, 2020	Dec. 31, 2019
FIP/RP Status	Implemented
Surcharge	No
Central Laborers' Pension Fund
Multiemployer Plans [Line Items]
Employer Identification Number	376052379
Plan Number	001
Contributions (in millions) For the Years Ended December 31,	$ 1.3	$ 0.8	1.3
Expiration Date of CBA	May 31, 2023
Pension Protection Act Zone Status	Yellow	Yellow
Pension Protection Act Zone Status, Date	Dec. 31, 2020	Dec. 31, 2019
FIP/RP Status	Implemented
Surcharge	No
Multiemployer plans, pension protection act zone status, extended amortization provisions	true	true
Pipeline Industry Pension Fund
Multiemployer Plans [Line Items]
Employer Identification Number	736146433
Plan Number	001
Contributions (in millions) For the Years Ended December 31,	$ 10.9	$ 2.6	9.6
Expiration Date of CBA	May 31, 2023
Pension Protection Act Zone Status	Green	Green
Pension Protection Act Zone Status, Date	Dec. 31, 2020	Dec. 31, 2019
FIP/RP Status	NA
Surcharge	No
Multiemployer pension plans, Company contributions greater than 5% of total plan contributions		true
Laborers' National Pension Fund
Multiemployer Plans [Line Items]
Employer Identification Number	751280827
Plan Number	001
Contributions (in millions) For the Years Ended December 31,	$ 3.8	$ 0.8	3.0
Expiration Date of CBA	May 31, 2023
Pension Protection Act Zone Status	Red	Red
Pension Protection Act Zone Status, Date	Dec. 31, 2020	Dec. 31, 2019
FIP/RP Status	Implemented
Surcharge	No
Teamsters National Pipeline Pension Fund
Multiemployer Plans [Line Items]
Employer Identification Number	461102851
Plan Number	001
Contributions (in millions) For the Years Ended December 31,	$ 6.2	$ 1.8	4.5
Expiration Date of CBA	May 31, 2023
Pension Protection Act Zone Status	Green	Green
Pension Protection Act Zone Status, Date	Dec. 31, 2020	Dec. 31, 2019
FIP/RP Status	NA
Surcharge	No
Multiemployer pension plans, Company contributions greater than 5% of total plan contributions	true	true
Michigan Laborers' Pension Plan
Multiemployer Plans [Line Items]
Employer Identification Number	386233976
Plan Number	001
Contributions (in millions) For the Years Ended December 31,	$ 1.6	$ 0.4	1.1
Expiration Date of CBA	May 31, 2023
Pension Protection Act Zone Status	Yellow	Yellow
Pension Protection Act Zone Status, Date	Aug. 31, 2021	Aug. 31, 2020
FIP/RP Status	Implemented
Surcharge	No
Multiemployer plans, pension protection act zone status, extended amortization provisions		true
West Virginia Laborers' Pension Trust Fund
Multiemployer Plans [Line Items]
Employer Identification Number	556026775
Plan Number	001
Contributions (in millions) For the Years Ended December 31,	$ 2.5	$ 1.4	4.9
Expiration Date of CBA	May 31, 2023
Pension Protection Act Zone Status	Green	Green
Pension Protection Act Zone Status, Date	Mar. 31, 2021	Mar. 31, 2020
FIP/RP Status	NA
Surcharge	No
Multiemployer pension plans, Company contributions greater than 5% of total plan contributions	true	true
Minnesota Laborers' Pension Fund
Multiemployer Plans [Line Items]
Employer Identification Number	416159599
Plan Number	001
Contributions (in millions) For the Years Ended December 31,	$ 5.1	$ 0.8	0.8
Expiration Date of CBA	May 31, 2023
Pension Protection Act Zone Status	Green	Green
Pension Protection Act Zone Status, Date	Dec. 31, 2020	Dec. 31, 2019
FIP/RP Status	NA
Surcharge	No
International Union of Operating Engineers Local 132 Pension Fund
Multiemployer Plans [Line Items]
Employer Identification Number	556015364
Plan Number	001
Contributions (in millions) For the Years Ended December 31,	$ 1.4	$ 1.2	5.0
Expiration Date of CBA	May 31, 2023
Pension Protection Act Zone Status	Green	Green
Pension Protection Act Zone Status, Date	Mar. 31, 2021	Mar. 31, 2020
FIP/RP Status	NA
Surcharge	No
Multiemployer pension plans, Company contributions greater than 5% of total plan contributions	true	true
Employer- Teamsters Local Nos. 175 & 505 Pension Trust Fund
Multiemployer Plans [Line Items]
Employer Identification Number	556021850
Plan Number	001
Contributions (in millions) For the Years Ended December 31,	$ 0.6	$ 0.6	1.7
Expiration Date of CBA	May 31, 2023
Pension Protection Act Zone Status	Red	Red
Pension Protection Act Zone Status, Date	Dec. 31, 2020	Dec. 31, 2019
FIP/RP Status	Implemented
Surcharge	No
Multiemployer pension plans, Company contributions greater than 5% of total plan contributions	true	true
Multiemployer plans, pension protection act zone status, extended amortization provisions	true	true
Minnesota Teamsters Construction Division Pension Fund
Multiemployer Plans [Line Items]
Employer Identification Number	416187751
Plan Number	001
Contributions (in millions) For the Years Ended December 31,	$ 3.1	$ 0.2	0.0
Expiration Date of CBA	May 31, 2023
Pension Protection Act Zone Status	Green	Green
Pension Protection Act Zone Status, Date	Nov. 30, 2020	Nov. 30, 2019
FIP/RP Status	NA
Surcharge	No
Pension
Multiemployer Plans [Line Items]
Total multiemployer pension plan contributions	$ 94.0	$ 30.0	$ 66.9

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.

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Indicates (true false) whether, in plan's most recently available annual report, employer contribution exceeds five percent of total contribution from all participating employers to multiemployer pension plan determined to be individually significant.

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Employer Identification Number (EIN) or Tax Identification Number (TIN) assigned by Internal Revenue Service (IRS) for multiemployer pension plan determined to be individually significant, in nine-digit numeric format.

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Indicates whether funding improvement plan or rehabilitation plan was implemented or pending for multiemployer pension plan, determined to be individually significant. Acceptable values are "No", "Pending", "Implemented", "Other", and "NA".

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