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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Accounting Policies [Abstract]

Schedule of Cash and Cash Equivalents

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported withing the consolidated balance sheets to the total amounts shown in the consolidated statements of cash flows for the years ended December 31, 2022, 2021 and 2020:

			Year Ended December 31,
(dollars in millions)			2022						2021						2020
Cash and cash equivalents			$	81.3					$	108.3					$	588.4
Restricted cash			5.5						4.5
Cash, cash equivalents and restricted cash			$	86.8					$	112.8					$	588.4

Schedule of Restrictions on Cash and Cash Equivalents

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported withing the consolidated balance sheets to the total amounts shown in the consolidated statements of cash flows for the years ended December 31, 2022, 2021 and 2020:

			Year Ended December 31,
(dollars in millions)			2022						2021						2020
Cash and cash equivalents			$	81.3					$	108.3					$	588.4
Restricted cash			5.5						4.5
Cash, cash equivalents and restricted cash			$	86.8					$	112.8					$	588.4

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(1)(a))
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 8
-URI https://asc.fasb.org/extlink&oid=126999549&loc=SL98516268-108586

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(2))
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