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Other Accrued Liabilities (Tables) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Accrued Liabilities, Current [Abstract]    
Accounts Payable and Accrued Liabilities Other Accrued Liabilities
December 31,
(In millions)20202019
Operating lease liabilities$15.3 $13.9 
Accrued interest12.6 13.3 
Current liability for pension and other postretirement employee benefits
6.2 7.4 
Accrued taxes other than income taxes payable10.5 7.1 
Accrued discounts and allowances4.9 6.6 
Other8.5 12.3 
$58.0 $60.7 
 
Other accrued liabilities $ 58.0 $ 60.7