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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2024
Income Tax Disclosure [Abstract] |
Schedule of Provision for Income Taxes | The provision for income taxes is comprised of the following (in millions):
| Years ended December 31,
| 2024 |  | 2023 |  | 2022
Current: |  |  |  |  |
Federal | $ | 69.4 |  |  | $ | 66.2 |  |  | $ | 55.5 |
State and local | 18.8 |  |  | 22.6 |  |  | 17.3 |
| 88.2 |  |  | 88.8 |  |  | 72.8 |
Deferred: |  |  |  |  |
Federal | 1.3 |  |  | 0.5 |  |  | 5.6 |
State and local | 0.3 |  |  | 0.1 |  |  | 1.5 |
| 1.6 |  |  | 0.6 |  |  | 7.1 |
Total tax expense | $ | 89.8 |  |  | $ | 89.4 |  |  | $ | 79.9 |
Schedule of Reconciliation Between Effective Tax Rate on Net Income (Loss) and Federal Statutory Tax Rate | The reconciliation between our effective tax rate on net income and the federal statutory rate is as follows (in millions):
| Years ended December 31,
| 2024 |  | 2023 |  | 2022
Income tax at federal statutory rate | $ | 72.7 |  |  | 21.0 | % |  | $ | 70.0 |  |  | 21.0 | % |  | $ | 63.7 |  |  | 21.0 | %
Stock compensation | (1.1) |  |  | (0.3) | % |  | (0.5) |  |  | (0.2) | % |  | 0.3 |  |  | 0.1 | %
Other permanent items | 2.3 |  |  | 0.7 | % |  | 1.8 |  |  | 0.5 | % |  | 1.3 |  |  | 0.4 | %
Change in valuation allowance | — |  |  | — | % |  | — |  |  | — | % |  | (0.1) |  |  | (0.1) | %
Change in uncertain tax positions | 0.5 |  |  | 0.1 | % |  | 0.2 |  |  | 0.1 | % |  | (0.5) |  |  | (0.1) | %
State and local income taxes, net of federal benefit | 15.4 |  |  | 4.4 | % |  | 17.9 |  |  | 5.4 | % |  | 15.2 |  |  | 5.0 | %
Total tax expense | $ | 89.8 |  |  | 25.9 | % |  | $ | 89.4 |  |  | 26.8 | % |  | $ | 79.9 |  |  | 26.3 | %
Schedule of Net Deferred Tax Asset or Liability | Components of the net deferred tax asset or liability are as follows (in millions):
| As of December 31,
| 2024 |  | 2023
Deferred Tax Assets |  |  |
Long-term |  |  |
Accrued liabilities and allowances | $ | 13.0 |  |  | $ | 13.2 |
Allowance for doubtful accounts | 1.9 |  |  | 1.5 |
Inventories | 1.5 |  |  | 1.1 |
Property and equipment | 0.3 |  |  | 0.4 |
Intangibles | 10.6 |  |  | 9.4 |
Net operating loss carryforwards | — |  |  | 0.2 |
Other | — |  |  | 0.1 |
Long-term deferred tax assets | 27.3 |  |  | 25.9 |
Less: Valuation allowance | — |  |  | (0.1) |
Net deferred tax assets | 27.3 |  |  | 25.8 |
Deferred Tax Liabilities |  |  |
Long-term |  |  |
Accrued liabilities and allowances | (2.7) |  |  | (2.7) |
Property and equipment | (9.9) |  |  | (9.4) |
Intangibles | (15.7) |  |  | (12.5) |
Investment in partnership | (23.4) |  |  | (23.6) |
Other | (1.5) |  |  | (1.7) |
Long-term deferred tax liabilities | (53.2) |  |  | (49.9) |
Net deferred tax liabilities | $ | (25.9) |  |  | $ | (24.1) |
The above amounts are included in our Consolidated Balance Sheets as follows: |  |  |
Other non-current assets | 0.4 |  |  | 0.4 |
Long-term deferred income tax liabilities | (26.3) |  |  | (24.5) |
Net deferred tax liabilities | $ | (25.9) |  |  | $ | (24.1) |
Schedule of Rollforward of Gross Unrecognized Tax Benefits | A rollforward of the gross unrecognized tax benefits is as follows (in millions):
Unrecognized tax benefit, December 31, 2021 | $ | 4.3 |
Increase as a result of tax positions taken during the period | 5.4 |
Decrease as a result of tax positions taken during the period | (4.8) |
Increase as a result of expiring statutes | — |
Unrecognized tax benefit, December 31, 2022 | $ | 4.9 |
Increase as a result of tax positions taken during the period | 7.5 |
Decrease as a result of tax positions taken during the period | (5.5) |
Increase as a result of expiring statutes | 0.1 |
Unrecognized tax benefit, December 31, 2023 | $ | 7.0 |
Increase as a result of tax positions taken during the period | 7.7 |
Decrease as a result of tax positions taken during the period | (7.0) |
Decrease as a result of expiring statutes | (0.1) |
Unrecognized tax benefit, December 31, 2024 | $ | 7.6 |

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