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Leases (Tables)
 12 Months Ended
Dec. 31, 2020
Leases [Abstract]  
Summary of Lease Expense
The components of the lease expense is as follows:
Year to date
In millions202020192018
Operating lease cost$3.8 $4.1 $4.8 
None of our leases were classified as finance leases in any of the years disclosed.
Supplemental cash flow information related to leases was as follows:
Year-to-date
In millions202020192018
Operating cash flows from operating leases$3.8 $4.1 $4.8 
Supplemental balance sheet information related to leases was as follows:
December 31,December 31,
In millions20202019
Operating leases
Operating lease right-of-use asset$9.5 $11.0 
Other current liabilities2.9 2.3 
Other non-current liabilities6.7 8.9 
$9.6 $11.2 
Weighted Average Remaining Lease Term (Years)21.917.1
Weighted Average Discount Rate4.43 %4.46 %
Maturities of Lease Liabilities
Maturities of lease liabilities were as follows:
In millions2020
2021$2.4 
20221.7 
20231.5 
20241.1 
20250.7 
Thereafter8.5 
Total lease payments$15.9 
Less imputed interest(6.3)
Total$9.6