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Employee Costs
 12 Months Ended
Dec. 31, 2023
Analysis of income and expense [abstract]  
Employee Costs Employee Costs
For the year ended December 31,
20232022
Note$$
Wages, salaries, and benefits3,654.6 3,243.2 
Pension costs108.0 93.5 
Net share-based compensation22 60.1 26.0 
Total employee costs3,822.7 3,362.7 
Direct labor2,321.5 2,039.9 
Indirect labor1,501.2 1,322.8 
Total employee costs3,822.7 3,362.7 

Direct labor costs include salaries, wages, and related fringe benefits (including pension costs) for labor hours directly associated with the completion of projects. Bonuses, share-based compensation, termination payments, and salaries, wages, and related fringe benefits (including pension costs) for labor hours not directly associated with the completion of projects are included in indirect labor costs. Indirect labor costs are included in administrative and marketing expenses in the consolidated statements of income. Included in pension costs is $108.3 (2022 - $91.6) related to defined contribution plans.