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v3.19.3

Labor Union Contracts (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 Employee | Sep. 30, 2019 Employee
Concentration risk |  |
Entity number of employees | 43,000 | 43,000
Total number of employees | Unionized employees concentration risk |  |
Concentration risk |  |
Concentration risk, percent | 73.00% | 26.00%
Workforce Subject to Collective Bargaining Arrangements, Expired | Unionized employees concentration risk |  |
Concentration risk |  |
Concentration risk, percent |  | 2.00%
Workforce Subject to Collective Bargaining Arrangements Expiring within One Year | Unionized employees concentration risk |  |
Concentration risk |  |
Concentration risk, percent |  | 10.00%

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