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Intangible Assets and Goodwill (Tables)
3 Months Ended
Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Carrying amount of intangible assets
The following table summarizes the carrying amount of intangible assets as of March 31, 2023 and December 31, 2022:
As of
March 31, 2023December 31, 2022
(Dollars in millions)
Acquired contractual rights$921.7 $920.2 
Accumulated amortization(159.3)(126.3)
Finite-lived intangible assets, net762.4 793.9 
Goodwill104.0 103.9 
Intangible Assets, net$866.4 $897.8 
Schedule of estimated amortization expense
The following table summarizes the expected amortization expense for 2023 through 2027 and thereafter (Dollars in millions):
2023 (excluding the three months ended March 31, 2023)$98.6 
2024131.5 
2025131.4 
2026131.3 
2027121.2 
Thereafter148.4 
$762.4