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Accounts Payable and Accrued Liabilities
6 Months Ended
Jun. 30, 2022
Payables and Accruals [Abstract]  
Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities
Accounts payable and accrued liabilities consisted of the following:
(dollars in millions)June 30,
2022
December 31,
2021
Accounts payable$12.3 $31.3 
Accrued liabilities
Research and development expenses18.9 9.5 
Employee expenses8.7 12.4 
Professional fees and other2.2 1.2 
Total accounts payable and accrued liabilities$42.1 $54.4