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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2024
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Tax Expense (Benefit) | The significant components of the Provision for income tax expense related to continuing operations are as follows (in millions):
| For the Year Ended December 31,
| 2024 |  | 2023 |  | 2022
Current: |  |  |  |  |
Federal | $ | 111.0 |  |  | $ | 101.7 |  |  | $ | 58.7 |
State and other | 28.5 |  |  | 26.6 |  |  | 13.5 |
Total current expense | 139.5 |  |  | 128.3 |  |  | 72.2 |
Deferred: |  |  |  |  |
Federal | 8.6 |  |  | (0.7) |  |  | 17.9 |
State and other | 2.1 |  |  | 4.6 |  |  | 10.0 |
Total deferred expense | 10.7 |  |  | 3.9 |  |  | 27.9 |
Total income tax expense related to continuing operations | $ | 150.2 |  |  | $ | 132.2 |  |  | $ | 100.1 |
Schedule of Effective Income Tax Rate Reconciliation | A reconciliation of differences between the federal income tax at statutory rates and our actual income tax expense on our income from continuing operations, which include federal, state, and other income taxes, is presented below:
| For the Year Ended December 31,
| 2024 |  | 2023 |  | 2022
Tax expense at statutory rate | 21.0 | % |  | 21.0 | % |  | 21.0 | %
Increase (decrease) in tax rate resulting from: |  |  |  |  |
State and other income taxes, net of federal tax benefit | 3.9 | % |  | 4.1 | % |  | 4.0 | %
Increase in valuation allowance | — | % |  | 0.3 | % |  | 0.6 | %
Noncontrolling interests | (3.8) | % |  | (4.0) | % |  | (4.4) | %
Share-based windfall tax benefits | (1.0) | % |  | — | % |  | — | %
Other, net | (0.1) | % |  | 0.4 | % |  | 1.0 | %
Income tax expense | 20.0 | % |  | 21.8 | % |  | 22.2 | %
Schedule of Components of Deferred Tax Assets and Liabilities | The significant components of our deferred tax assets and liabilities are presented in the following table (in millions):
| As of December 31,
| 2024 |  | 2023
Deferred income tax assets: |  |  |
Net operating loss | $ | 8.8 |  |  | $ | 23.1 |
Insurance reserve | 20.9 |  |  | 20.1 |
Stock-based compensation | 24.0 |  |  | 21.4 |
Revenue reserves | 8.0 |  |  | 7.6 |
Operating lease liabilities | 7.9 |  |  | 8.8 |
Other accruals | 29.4 |  |  | 26.2 |
Tax credits | 17.0 |  |  | 14.6 |
Total deferred income tax assets | 116.0 |  |  | 121.8 |
Less: Valuation allowance | (21.0) |  |  | (28.4) |
Net deferred income tax assets | 95.0 |  |  | 93.4 |
Deferred income tax liabilities: |  |  |
Intangibles | (63.4) |  |  | (62.6) |
Operating lease right-of-use assets | (6.8) |  |  | (7.8) |
Property, net | (18.8) |  |  | (18.1) |
Carrying value of partnerships | (110.9) |  |  | (91.7) |
Other | (0.3) |  |  | (0.2) |
Total deferred income tax liabilities | (200.2) |  |  | (180.4) |
Net deferred income tax liabilities | $ | (105.2) |  |  | $ | (87.0) |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-9 + Details
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