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Cash and Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2024

Cash and Cash Equivalents [Abstract]

Schedule of Investment Components

The components of our investments as of December 31, 2024 are as follows (in millions):

			Cash & Cash Equivalents						Restricted Cash						Restricted Marketable Securities						Total
Cash			$	85.4					$	37.7					$	—					$	123.1
Equity securities			—						—						130.9						130.9
Total			$	85.4					$	37.7					$	130.9					$	254.0

The components of our investments as of December 31, 2023 are as follows (in millions):

			Cash & Cash Equivalents						Restricted Cash						Restricted Marketable Securities						Total
Cash			$	69.1					$	35.1					$	—					$	104.2
Equity securities			—						—						126.2						126.2
Total			$	69.1					$	35.1					$	126.2					$	230.4

Schedule of Restricted Cash

Restricted cash consisted of the following (in millions):

			As of December 31,
			2024						2023
Current:
Affiliate cash			$	17.9					$	17.7
Self-insured captive funds			19.8						17.1
Other			—						0.3
Total restricted cash			$	37.7					$	35.1

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Tabular disclosure of the components of cash, cash equivalents, and investments.

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- Definition

Tabular disclosure of cash and cash equivalents restricted as to withdrawal or usage.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(1)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-8

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