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Restructuring (Tables)
12 Months Ended
Dec. 31, 2021
Restructuring and Related Activities [Abstract]  
Restructuring and Related Costs
Restructuring related costs included in restructuring charges in the consolidated statement of income are as follows:
Years ended December 31,
In millions202120202019
Severance and related costs$(6.2)$(8.9)$(20.9)
Asset impairment — (5.0)
Total restructuring charges$(6.2)$(8.9)$(25.9)
4.    Restructuring (continued)
Restructuring costs by reportable segment were as follows:
Years ended December 31,
In millions202120202019
Gas Cylinders Segment$(5.3)$(7.9)$(20.7)
Elektron Segment(0.9)(0.9)(5.2)
Other$ $(0.1)$— 
Total restructuring charges$(6.2)$(8.9)$(25.9)
Schedule of Restructuring Reserve
Activity related to restructuring, recorded in other current liabilities in the consolidated balance sheets is summarized as follows:
In millions20212020
Balance at January 1,$9.0 $6.5 
Costs incurred6.2 8.9 
Cash payments and other(3.5)(6.4)
Balance at December 31,$11.7 $9.0