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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2025

Income Tax Disclosure [Abstract]

Schedule of Components of Income before Income Taxes

The components of income or loss before income taxes for the periods indicated were as follows (in millions):

			Year Ended December 31,
			2025						2024						2023
Domestic			$	516.5					$	255.7					$	(84.9)
Foreign			(1.1)						(4.7)						2.2
Total			$	515.4					$	251.0					$	(82.7)

Schedule of Provision for Income Taxes

The provision for income taxes for the periods indicated were as follows (in millions):

			Year Ended December 31,
			2025						2024						2023
Current:
Federal			$	(51.2)					$	68.9					$	90.2
Foreign			1.9						7.8						1.8
State and local			27.5						9.3						13.5
			$	(21.8)					$	86.0					$	105.5
Deferred:
Federal			$	143.3					$	(26.2)					$	(119.7)
Foreign			(9.7)						0.0						(0.1)
State and local			(18.4)						(8.3)						(21.1)
			$	115.2					$	(34.5)					$	(140.9)
Provision for (benefit from) income taxes			$	93.4					$	51.5					$	(35.4)

Schedule of Cash Flow, Supplemental Disclosures

The Company adopted ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, on a prospective basis beginning with the year ended December 31, 2025. The following table presents the required disclosure pursuant to ASU 2023-09 for income taxes paid, net of refunds, for the year ended December 31, 2025 (in millions):

			Year ended December 31, 2025
Federal taxes			$	25.0
State taxes
Virginia			3.8
Pennsylvania			2.5
Other state jurisdictions			10.7
Foreign taxes			2.4
Income taxes paid, net of refunds			$	44.4

The following table presents income taxes paid, net of refunds, for the years ended December 31, 2024 and 2023, prior to the adoption of ASU 2023-09 (in millions):

			Years ended December 31,
			2024						2023
Income taxes paid, net of refunds			$	44.0					$	9.6

Schedule of Deferred Tax Assets and Liabilities

The tax effects of significant items comprising the Company’s net deferred tax liability as of the dates indicated were as follows (in millions):

			December 31,
			2025						2024
Deferred tax assets:
Accrued insurance			$	66.7					$	54.0
Operating loss carryforwards and tax credits			88.3						93.3
Compensation and benefits			47.5						45.1
Bad debt			4.3						4.6
Other			13.4						20.5
Capitalized expenses			43.2						332.6
Valuation allowance			(61.0)						(64.7)
Total deferred tax assets			$	202.4					$	485.4
Deferred tax liabilities:
Property and equipment			$	323.2					$	299.7
Goodwill			124.1						112.9
Other intangible assets			52.6						75.8
Gain on remeasurement of equity investee			7.2						7.3
Revenue recognition			26.8						203.0
Investments in unconsolidated entities			114.1						117.6
Other			32.6						31.9
Total deferred tax liabilities			$	680.6					$	848.2
Net deferred tax liabilities			$	(478.2)					$	(362.8)

Schedule of Effective Tax Rate Reconciliation

The Company adopted ASU 2023-09 on a prospective basis beginning with the year ended December 31, 2025. The following table presents the required disclosure pursuant to ASU 2023-09 and reconciles the U.S. statutory federal income tax rate related to pretax income to the effective amount and tax rate for the year ended December 31, 2025 (dollar amounts in millions):

			December 31, 2025
			Amount						Percent
U.S. statutory federal rate			$	108.3					21.0		%
State and local income tax, net of federal (national) income tax effect (a)			15.8						3.1
Foreign tax effects:
Canada
Changes in valuation allowances			(8.7)						(1.7)
Other			0.6						0.1
Other foreign jurisdictions			0.5						0.1
Tax credits:
Research and development credit			(20.4)						(4.0)
Other			(0.7)						(0.1)
Nontaxable or nondeductible items:
Nondeductible employee expenses			16.1						3.1
Other			(6.2)						(1.2)
Changes in unrecognized tax benefits			(11.4)						(2.2)
Other adjustments			(0.5)						(0.1)
Effective tax rate			$	93.4					18.1		%

(a)    While no state jurisdiction is individually material, California, Florida, Pennsylvania and Virginia made up the majority (greater than 50%) of the Company’s state taxes.

The following table presents the required disclosures prior to the adoption of ASU 2023-09 and reconciles the U.S. statutory federal income tax rate related to pretax income to the effective tax rate for the years ended December 31, 2024 and 2023:

			Year Ended December 31,
			2024						2023
U.S. statutory federal rate applied to pretax income			21.0		%				21.0		%
State and local income taxes, net of federal benefit			1.4						4.3
Foreign tax rate differential			0.2						(1.8)
Non-deductible expenses			5.6						(14.6)
Goodwill and intangible assets			0.0						1.8
Change in tax rate			(0.3)						(5.6)
Compensation and benefits			1.0						6.2
Non-controlling interest			(3.0)						0.7
Other			3.8						0.7
Tax credits			(10.0)						24.7
Stock basis adjustment			0.0						4.9
Valuation allowance for deferred tax assets			0.8						0.5
Effective income tax rate			20.5		%				42.8		%

Schedule of Unrecognized Tax Benefits Roll Forward

A reconciliation of the beginning and ending amount of uncertain tax positions, excluding interest and penalties, follows in the table below (in millions).

			Year Ended December 31,
			2025						2024						2023
Beginning balance			$	70.3					$	60.9					$	39.3
Additions based on tax positions related to the current year			13.9						15.5						16.6
Additions for tax positions of prior years			—						6.6						9.5
Reductions for tax positions of prior years			(2.7)						—						—
Settlements			(6.6)						—						—
Lapse of statute of limitations			(16.4)						(12.7)						(4.5)
Ending balance			$	58.5					$	70.3					$	60.9

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