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Leases (Tables)
 6 Months Ended
Jun. 30, 2021
Leases [Abstract]  
Components of Lease Expense and Other Information
The components of lease expense were as follows:
Three Months Ended June 30,Six Months Ended June 30,
(in millions)2021202020212020
Operating lease cost$7.0 $7.1 $14.2 $14.4 
Sublease income(0.3)(0.3)(0.6)(0.7)
Total lease cost$6.7 $6.8 $13.6 $13.7 

Other information related to leases was as follows:
Six Months Ended June 30,
(in millions, except lease term and discount rate)20212020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases$15.1 $14.4 
Right-of-use assets obtained in exchange for lease obligations:
Operating leases3.7 2.5 
As of
June 30, 2021
Weighted average remaining lease term:
Operating leases6.4 years
Weighted average discount rate:
Operating leases5.2 %
Future Minimum Lease Payments
Future minimum lease payments, net of sub-lease income, for all non-cancelable leases as of June 30, 2021, were as follows:
(in millions)
2021$13.2 
202220.9 
202315.6 
202412.7 
20259.8 
20268.3 
Thereafter24.2 
Total minimum lease payments104.7 
Less imputed interest17.8 
Future minimum payments for leases, net of sublease rental income and imputed interest$86.9