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16. Leases (Tables)
 12 Months Ended
Dec. 31, 2020
Leases [Abstract]  
Lease, Cost [Table Text Block]
The components of lease expense were as follows (in millions):
Twelve Months Ended December 31,20202019
Operating lease cost$45.4 $51.4 
Finance lease cost:
  Amortization of right-to-use assets$0.6$0.6 
  Interest on lease liabilities$0.80.9 
        Total finance lease cost$1.4 $1.5 
Sublease income$3.0 $3.0 
Lessee Supplemental Cash Flow Information [Table Text Block]
Supplemental cash flow information related to leases was as follows (in millions):
Twelve Months Ended December 31,20202019
Cash paid for amounts included in the measurement of lease liabilities:
  Operating cash flows from operating leases$44.4 $47.2 
  Operating cash flows from finance leases$0.6 $0.9 
  Financing cash flows from finance leases$0.8 $0.6 
Right-of-use assets obtained in exchange for lease obligations:
  Operating leases$16.1 $28.7 
  Finance leases$0.4 $0.2 
Lessee Supplemental Balance Sheet Information [Table Text Block]
Supplemental balance sheet information related to leases was as follows (in millions):
December 31, 20202019
Operating Leases
  Operating lease right-of-use assets$202.1 $201.9 
  Current operating lease liabilities$36.5 $35.4 
  Operating lease liabilities175.1 176.0 
     Total operating lease liabilities$211.6 $211.4 
Finance leases are included in Property, plant and equipment, Current maturities of long-term debt, and Long-term debt, net of current maturities.
December 31,20202019
Finance Leases
  Property, plant and equipment, gross$12.2 $11.4 
  Less: accumulated depreciation and amortization(5.0)(4.2)
      Property, plant and equipment, net$7.2 $7.2 
  Current maturities of long-term debt and notes payable$0.5 $0.5 
  Long-term debt, net of current maturities11.0 11.2 
      Total finance lease liabilities$11.5 $11.7 
December 31, 20202019
Weighted Average Remaining Lease Term
  Operating leases - in years89
  Finance leases - in years1618
Weighted Average Discount Rate
  Operating leases3.9 %4.2 %
  Finance leases6.2 %6.5 %
Maturities Of Lease Liabilities For Operating and Finance Leases [Table Text Block]
Maturities of lease liabilities were as follows (in millions):
Year Ending December 31,

Operating LeasesFinance Leases
2021$43.6 $1.3 
202236.5 1.2 
202331.9 1.2 
202427.2 1.2 
202523.2 1.1 
Thereafter90.5 14.0 
   Total lease payments252.9 20.0 
Less imputed interest(41.3)(8.5)
    Total$211.6 $11.5