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Intangible Assets and Goodwill (Tables)
 9 Months Ended
Sep. 30, 2024
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, 2024 and December 31,
2023:
As of
September 30,
2024
December 31,
2023
(Dollars in millions)
Acquired contractual rights
$927.9
$924.1
Accumulated amortization
(361.4)
(262.0)
Finite-lived intangible assets, net
566.5
662.1
Goodwill
104.1
104.0
Intangible Assets, net
$670.6
$766.1
Schedule of Estimated Amortization Expense The following table summarizes the expected amortization expense for 2024 through 2028 and thereafter (Dollars in
millions):
Year ending December 31,
2024 (excluding the nine months ended September 30, 2024)
$33.0
2025
131.7
2026
131.6
2027
121.5
2028
114.4
Thereafter
34.3
$566.5