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Intangible Assets and Goodwill (Tables) | 9 Months Ended
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Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Carrying Amount of Intangible Assets | The following table summarizes the carrying amount of intangible assets as of September 30, 2025 and December 31, 2024:
| As of
| September 30, 2025 |  | December 31, 2024
| (Dollars in millions)
Acquired contractual rights | $928.2 |  | $922.7
Accumulated amortization | (492.8) |  | (392.2)
Finite-lived intangible assets, net | 435.4 |  | 530.5
Goodwill | 104.6 |  | 103.6
Intangible Assets, net | $540.0 |  | $634.1
Schedule of Estimated Amortization Expense | The following table summarizes the expected amortization expense for 2025 through 2029 and thereafter (Dollars in millions):
Year ending December 31, |
2025 (excluding the nine months ended September 30, 2025) | $33.0
2026 | 131.8
2027 | 121.7
2028 | 114.5
2029 | 31.9
Thereafter | 2.5
| $435.4

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