Multiemployer Plans Participation by Plan (Details 18) - Pension Benefits - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Insignificant, Employer Contribution, Cost	$ 23,390	$ 23,722	$ 19,598
Multiemployer Plan, Employer Contribution, Cost	$ 82,388	$ 85,444	72,525
Edison Pension Plan
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Employer Identification Number	936061681
Multiemployer Plan, Pension, Significant, Plan Number	001
Multiemployer Plan, Pension, Significant, Certified Zone Status [Fixed List]	Green	Green
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]	No
Multiemployer Plan, Pension, Significant, Employer Contribution, Cost	$ 18,331	$ 16,121	12,252
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	No
Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date	Dec. 31, 2023
IBEW Local 212 Pension Trust
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Employer Identification Number	316127280
Multiemployer Plan, Pension, Significant, Plan Number	001
Multiemployer Plan, Pension, Significant, Certified Zone Status [Fixed List]	Green	Green
Multiemployer Plan, Pension, Significant, Certified Zone Status, Date	Apr. 30, 2021	Apr. 30, 2020
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]	No
Multiemployer Plan, Pension, Significant, Employer Contribution, Cost	$ 1,733	$ 1,521	1,110
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	No
Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date	Jun. 01, 2025
IBEW Local 357 Pension Plan A
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Employer Identification Number	886023284
Multiemployer Plan, Pension, Significant, Plan Number	001
Multiemployer Plan, Pension, Significant, Certified Zone Status [Fixed List]	Green	Green
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]	No
Multiemployer Plan, Pension, Significant, Employer Contribution, Cost	$ 6,485	$ 9,913	10,162
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	No
Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date	May 31, 2024
IBEW Local 82 Pension Plan
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Employer Identification Number	316127268
Multiemployer Plan, Pension, Significant, Plan Number	001
Multiemployer Plan, Pension, Significant, Certified Zone Status [Fixed List]	Green	Green
Multiemployer Plan, Pension, Significant, Certified Zone Status, Date	Jun. 30, 2021	Jun. 30, 2020
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]	No
Multiemployer Plan, Pension, Significant, Employer Contribution, Cost	$ 1,353	$ 1,373	1,662
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	No
Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date	Dec. 03, 2023
Idaho Plumbers and Pipefitters Pension Plan
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Employer Identification Number	826010346
Multiemployer Plan, Pension, Significant, Plan Number	001
Multiemployer Plan, Pension, Significant, Certified Zone Status [Fixed List]	Green	Green
Multiemployer Plan, Pension, Significant, Certified Zone Status, Date	May 31, 2021	May 31, 2020
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]	No
Multiemployer Plan, Pension, Significant, Employer Contribution, Cost	$ 1,528	$ 1,370	1,307
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	No
Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date	Mar. 31, 2023
National Electrical Benefit Fund
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Employer Identification Number	530181657
Multiemployer Plan, Pension, Significant, Plan Number	001
Multiemployer Plan, Pension, Significant, Certified Zone Status [Fixed List]	Green	Green
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]	No
Multiemployer Plan, Pension, Significant, Employer Contribution, Cost	$ 14,361	$ 14,484	12,679
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	No
National Electrical Benefit Fund \| Minimum
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date	May 31, 2021
National Electrical Benefit Fund \| Maximum
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date	May 31, 2026
Pension and Retirement Plan of Plumbers and Pipefitters Local 525
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Employer Identification Number	886003864
Multiemployer Plan, Pension, Significant, Plan Number	001
Multiemployer Plan, Pension, Significant, Certified Zone Status [Fixed List]	Green	Green
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]	No
Multiemployer Plan, Pension, Significant, Employer Contribution, Cost	$ 4,345	$ 6,266	4,747
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	No
Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date	Sep. 30, 2024
Pension Trust Fund for Operating Engineers
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Employer Identification Number	946090764
Multiemployer Plan, Pension, Significant, Plan Number	001
Multiemployer Plan, Pension, Significant, Certified Zone Status [Fixed List]	Yellow	Yellow
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]	Implemented
Multiemployer Plan, Pension, Significant, Employer Contribution, Cost	$ 2,495	$ 2,680	2,598
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	No
Pension Trust Fund for Operating Engineers \| Minimum
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date	Jun. 15, 2022
Pension Trust Fund for Operating Engineers \| Maximum
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date	Jun. 30, 2023
Sheet Metal Workers Pension Plan of Southern CA, AZ, and NV
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Employer Identification Number	956052257
Multiemployer Plan, Pension, Significant, Plan Number	001
Multiemployer Plan, Pension, Significant, Certified Zone Status [Fixed List]	Yellow	Yellow
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]	Implemented
Multiemployer Plan, Pension, Significant, Employer Contribution, Cost	$ 2,615	$ 3,255	2,119
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	No
Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date	Jun. 30, 2024
Southern California IBEW-NECA Pension Trust Fund
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Employer Identification Number	956392774
Multiemployer Plan, Pension, Significant, Plan Number	001
Multiemployer Plan, Pension, Significant, Certified Zone Status [Fixed List]	Yellow	Yellow
Multiemployer Plan, Pension, Significant, Certified Zone Status, Date	Jun. 30, 2021	Jun. 30, 2020
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]	Implemented
Multiemployer Plan, Pension, Significant, Employer Contribution, Cost	$ 2,746	$ 1,714	1,477
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	No
Southern California IBEW-NECA Pension Trust Fund \| Minimum
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date	Jun. 30, 2022
Southern California IBEW-NECA Pension Trust Fund \| Maximum
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date	May 31, 2026
Western Conference of Teamsters Pension Plan
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Employer Identification Number	916145047
Multiemployer Plan, Pension, Significant, Plan Number	001
Multiemployer Plan, Pension, Significant, Certified Zone Status [Fixed List]	Green	Green
Multiemployer Plan, Pension, Significant, Funding Improvement or Rehabilitation Plan, Implementation Status [Fixed List]	No
Multiemployer Plan, Pension, Significant, Employer Contribution, Cost	$ 3,006	$ 3,025	$ 2,814
Multiemployer Plan, Pension, Significant, Surcharge [Fixed List]	No
Western Conference of Teamsters Pension Plan \| Minimum
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date	Dec. 31, 2023
Western Conference of Teamsters Pension Plan \| Maximum
Multiemployer Plans [Line Items]
Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date	Dec. 31, 2025

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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Amount of cost for employer contribution to multiemployer pension plan determined to be individually insignificant.

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Year-end date of plan applicable to certified zone status for multiemployer pension plan determined to be individually significant, in YYYY-MM-DD format.

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Indicates certified zone status of multiemployer pension plan determined to be individually significant. Acceptable values are "Green", "Yellow", "Orange", "Red", "Other", and "NA".

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Expiration date of collective-bargaining arrangement (CBA) requiring contribution to multiemployer pension plan determined to be individually significant, in YYYY-MM-DD format.

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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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Plan number for multiemployer pension plan determined to be individually significant, in three-digit numeric format.

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Indicates whether employer paid surcharge to multiemployer pension plan determined to be individually significant. Acceptable values are "No", "Yes" and "NA".

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