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Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]  
Components of Lease Cost The components of lease cost follow:
(in millions)2019
Operating lease cost
$27.5  
Variable lease cost
5.0  
Short-term lease cost3.1  
Total lease cost$35.6  
Summary of Lease Assets and Lease Liabilities
A summary of lease assets and liabilities follows:
(in millions)
December 31,
2019
Assets:
Operating lease right-of-use assets(1)
$78.0  
Liabilities:
Operating lease liabilities - current(2)
22.2  
Operating lease liabilities - long-term(3)
61.8  
Total lease liabilities$84.0  
(1)Included in other long-term assets.
(2)Included in accrued and other current liabilities.
(3)Included in other long-term liabilities.
Maturity of Lease Liabilities
Maturity of lease liabilities as of December 31, 2019, follow:
(in millions)
20202021202220232024ThereafterTotal
Lease payments$24.8  $18.6  $13.7  $9.6  $6.8  $22.9  $96.4  
Less: imputed interest(12.4) 
Total lease liabilities$84.0  
As previously disclosed in our 2018 Annual Report on Form 10-K and under the previous lease accounting standard, future minimum lease payments for non-cancelable operating leases in future years would have been as follows:

(in millions)		20192020202120222023Thereafter
Future minimum lease payments$16.7  $10.8  $6.8  $4.9  $4.2  $5.1  
Lease Term and Discount Rate
Lease Term and Discount Rate
December 31,
2019
Operating leases:
Weighted-average remaining lease term (in years)
6.3
Weighted-average discount rate3.8 %