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WORKERS' PARTICIPATION: (Tables)
12 Months Ended
Dec. 31, 2023
WORKERS' PARTICIPATION:  
Schedule of workers' participation expense Workers’ participation expense for the three years ended December 31, 2023 was as follows (in millions):

    

2023

    

2022

    

2021

Current

$

265.0

$

347.2

$

344.5

Deferred

 

(11.8)

 

29.1

 

(72.8)

$

253.2

$

376.3

$

271.7