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Leases Leases (Tables)
 12 Months Ended
Dec. 31, 2024
Leases [Abstract]  
Components of Lease Expense
The components of lease expense are as follows (in millions):
Years Ended December 31,
202420232022
Long-term operating lease cost$35.4 $24.6 $13.4 
Short-term operating lease cost17.6 13.2 15.2 
Variable lease cost (1)
9.8 11.3 1.0 
Total operating lease cost$62.8 $49.1 $29.6 
Supplemental Balance Sheet Information
Supplemental balance sheet information related to our operating leases is as follows (in millions, except lease term and discount rate):
December 31,
20242023
Operating lease right-of-use assets$84.5$74.6
Current lease liability$28.0$27.2
Long-term lease liability56.948.9
Total operating lease liabilities$84.9$76.1
Weighted-average remaining lease term (in years)3.23.6
Weighted-average discount rate (1)
7.75 %8.21 %
(1)Represents our estimated incremental borrowing cost on a secured basis for similar terms as the underlying leases.

Supplemental cash flow information related to our operating leases is as follows (in millions):

Years Ended December 31,
202420232022
ROU assets obtained in exchange for operating lease liabilities
$39.4 $80.3 $14.7 
Cash paid for amounts included in the measurement of our operating lease liabilities
$34.9 $26.2 $14.0 
Maturities of Lease Liabilities
Maturities of lease liabilities as of December 31, 2024 were as follows (in millions):
2025$32.7 
202631.3 
202720.9 
20285.4 
20293.1 
Thereafter3.0 
Total lease payments$96.4 
Less imputed interest(11.5)
Total$84.9