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Leases - Lease Cost and Other Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Finance leases |  |  |  |
Amortization of ROU assets | $ 2.4 | $ 2.3 | $ 4.4 | $ 4.8
Interest on lease liabilities | 0.4 | 0.4 | 0.8 | 0.8
Operating leases | 8.9 | 9.6 | 18.3 | 18.6
Short-term lease cost | 1.1 | 0.7 | 1.3 | 1.3
Variable lease cost | 1.7 | 1.0 | 3.4 | 2.8
Total lease cost | $ 14.5 | $ 14.0 | 28.2 | 28.3
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |
Operating cash flows - finance leases |  |  | 2.2 | 1.7
Operating cash flows - operating leases |  |  | 19.3 | 18.5
Financing cash flows - finance leases |  |  | 3.9 | 4.3
ROU assets obtained in exchange for new lease liabilities |  |  |  |
ROU assets obtained in exchange for new finance lease liabilities |  |  | 6.0 | 8.3
ROU assets obtained in exchange for new operating lease liabilities |  |  | $ 26.7 | $ 40.8
Finance leases |  |  |  |
Remaining lease term (in years) | 5 years 8 months 12 days | 8 years 2 months 12 days | 5 years 8 months 12 days | 8 years 2 months 12 days
Discount rate | 7.50% | 6.50% | 7.50% | 6.50%
Operating leases |  |  |  |
Remaining lease term (in years) | 5 years 2 months 12 days | 4 years 3 months 18 days | 5 years 2 months 12 days | 4 years 3 months 18 days
Discount rate | 6.30% | 5.50% | 6.30% | 5.50%

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