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Accounts Payable and Accrued Liabilities
12 Months Ended
Dec. 31, 2020
Accounts Payable and Accrued Liabilities [Abstract]  
Accounts Payable and Accrued Liabilities [Text Block] ACCOUNTS PAYABLE AND ACCRUED LIABILITIES
Components of accounts payable and accrued liabilities follow (in millions):
December 31,
20202019
Trade payables$4.9 $7.0 
Compensation and employee benefits22.2 13.1 
Postretirement health and life benefit obligations - current11.6 14.2 
Accrued HALEU Contract loss - current7.0 10.0 
Operating lease liability2.4 2.5 
Severance— 1.4 
Other accrued liabilities2.5 2.5 
   Total accounts payable and accrued liabilities$50.6 $50.7