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Restructuring (Tables)
 3 Months Ended
Mar. 31, 2021
Restructuring And Related Activities [Abstract]  
Summary of Changes to Our 2020 Plan Liabilities

The following table summarizes the changes to our 2020 Plan liabilities during the quarter ended March 31, 2021 (in millions of dollars):

 

 

 

Quarter Ended March 31, 2021

 

Balance as of December 31, 2020

 

$

1.4

 

Cash payments

 

 

(0.4

)

Other adjustments1

 

 

(0.7

)

Balance as of March 31, 2021

 

$

0.3

 

 

1

In March 2021, we revised our production forecast for 2021, thereby reducing the estimated number of headcount reductions necessary as compared with our initial restructuring plan. As such, included in Other adjustments is a reduction to our estimated restructuring liability of $0.7 million with an offset to Restructuring costs to accommodate the revised headcount requirements.