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Restructuring (Tables)
 12 Months Ended
Dec. 31, 2022
Restructuring and Related Activities [Abstract]  
Summary of Activity Relating to Restructuring Plan Liabilities

The following table summarizes activity relating to restructuring plan liabilities (in millions of dollars):

 

 

 

Year Ended December 31,

 

 

 

2022

 

 

2021

 

Beginning balance

 

$

—

 

 

$

1.4

 

Restructuring costs

 

 

2.2

 

 

 

—

 

Costs paid or otherwise settled

 

 

(0.5

)

 

 

(0.6

)

Other adjustments1

 

 

—

 

 

 

(0.8

)

Ending balance

 

$

1.7

 

 

$

—

 

 

1
In 2021, we revised our production forecasts, thereby reducing the estimated number of headcount reductions necessary under the 2020 Restructuring Plan as compared with our initial requirements. These reductions to accommodate the revised headcount requirements are included in Other adjustments with an offset to Restructuring costs (benefit) in our Statements of Consolidated (Loss) Income.