Intangible Assets and Goodwill (Tables)

12 Months Ended

Dec. 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 December 31, 2023 and 2022:

	As of December 31,
	2023	2022
	(Dollars in millions)
Acquired contractual rights	$924.1	$920.2
Accumulated amortization	(262.0)	(126.3)
Finite-lived intangible assets, net	662.1	793.9
Goodwill	104.0	103.9
Intangible Assets, net	$766.1	$897.8

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	$131.1
2025	131.1
2026	131.0
2027	120.9
2028	113.8
Thereafter	34.2
	$662.1