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Leases, Codification Topic 842 (Tables)
 12 Months Ended
Sep. 30, 2021
Leases [Abstract]  
Lease, Cost
The components of lease cost are presented below.

Year ended September 30,
202120202019
(in millions)
Operating lease cost$6.1 $6.3 $5.8 
Finance lease cost1.2 1.3 1.0 
Total lease expense$7.3 $7.6 $6.8 
Supplemental Balance Sheet - Leases
Supplemental information regarding our lease assets and liabilities is below.
September 30,
20212020
(in millions)
Right-of-use assets:
Operating leasesOther noncurrent assets$27.1 $25.6 
Finance leasesPlant, property and equipment2.2 2.5 
Total right-of-use assets $29.3 $28.1 
Lease liabilities:
Operating leases - currentOther current liabilities$4.0 $4.0 
Operating leases - noncurrentOther noncurrent liabilities24.6 23.3 
Finance leases - currentCurrent portion of long-term debt1.0 1.1 
Finance leases - noncurrentLong-term debt1.2 1.4 
Total lease liabilities$30.8 $29.8 
Supplemental Information - Leases
Supplemental information related to lease terms and discount rates are presented below.
Year ended September 30,
20212020
Weighted-average remaining lease term (years):
Operating leases7.827.87
Finance leases2.532.52
Weighted-average interest rate:
Operating leases5.36 %5.64 %
Finance leases4.24 %4.96 %
Lease Maturity Schedule Total lease liabilities at September 30, 2021 have scheduled maturities as follows:
Operating LeasesFinance Leases
(in millions)
2022$5.4 $1.1 
20235.0 0.7 
20244.7 0.3 
20254.3 0.1 
20264.1 0.1 
Thereafter11.5 — 
Total lease payments35.0 2.3 
Less: imputed interest(6.4)(0.1)
Present value of lease liabilities$28.6 $2.2 
ScheduleOfCashFlowSupplementalDisclosures - Leases
Supplemental cash flow information related to leases are presented below, in millions.
Year ended September 30,
20212020
Operating cash used for operating leases$6.1 $6.1 
Financing cash used for finance leases$1.2 $1.3