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COLLABORATION INVENTORIES, NET (Tables)
3 Months Ended
Mar. 31, 2026
Classes of current inventories [abstract]  
Summary of Inventories
(Dollars in millions)March 31,
2026
December 31,
2025
Raw materials$22.4 $24.1 
Work-in-process5.2 1.1 
Finished goods9.5 6.8 
Total collaboration inventories, net$37.1 $32.0