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Commitments and Contingencies - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) employee collective_bargaining_agreement
Loss Contingencies [Line Items]
Number of collective bargaining agreements that are national or regional in scope | collective_bargaining_agreement	2
Minimum
Loss Contingencies [Line Items]
Number of employees | employee	35,500
Number of collective bargaining agreements between our individual subsidiaries and local unions | collective_bargaining_agreement	450
Surety Bond [Member]
Loss Contingencies [Line Items]
Estimated exposure, contracts with surety bonds | $	$ 1,500.0
Estimated exposure, contracts with surety bonds, RPO percentage	20.00%
Surety bonds for insurance | $	$ 48.1
Unionized Employees Concentration Risk [Member] | Workforce Subject to Collective Bargaining Arrangements [Member]
Loss Contingencies [Line Items]
Percentage of employees represented by unions	60.00%

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Aggregate estimated exposure, assuming defaults on all our then existing contracts covered by surety bonds.

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Aggregate estimated exposure on contracts covered by surety bonds as a percentage of remaining performance obligations.

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Number of collective bargaining agreements between our individual subsidiaries and local unions.

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Collective Bargaining Agreements, National or Regional, Number

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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