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Commitments and Contingencies - Narrative (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 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 | 34,000
Number of collective bargaining agreements between our individual subsidiaries and local unions | collective_bargaining_agreement | 450
Surety Bond [Member] |
Loss Contingencies [Line Items] |
Aggregate estimated exposure, certain performance obligations | $ | $ 1,500.0
Aggregate estimated exposure, certain performance obligations, percentage | 26.00%
Aggregate estimated exposure, other contractual obligations | $ | $ 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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