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Reconciliation of Income Tax Provision (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |
Income tax provision at statutory rate | $ 128.7 | $ 111.2 | $ 222.8
Non-deductible expenses, net | 10.3 | 4.9 | 5.9
State income taxes, net of federal benefit | 25.7 | 22.8 | 19.7
Income tax provision, excluding other reconciling items | 164.7 | 138.9 | 248.4
Change in tax rate | 0.0 | (5.0) | (44.2)
Change in valuation allowance, net | 0.2 | 3.5 | 3.3
Adjustments and settlements | 0.4 | (0.7) | 0.3
Federal and state tax credits | (0.9) | (1.0) | (3.7)
Other, net | (2.6) | (2.2) | (2.6)
Income tax provision | $ 161.8 | $ 133.5 | $ 201.5
Effective Income Tax Rate Reconciliation, Percent [Abstract] |  |  |
Income tax provision at statutory rate, % | 21.00% | 21.00% | 35.00%
Non-deductible expenses, net, % | 1.70% | 0.90% | 0.90%
State income taxes, net of federal benefit, % | 4.20% | 4.30% | 3.10%
Income tax provision, excluding other reconciling items, % | 26.90% | 26.20% | 39.00%
Change in tax rate, % | 0.00% | (0.90%) | (6.90%)
Change in valuation allowance, net, % | 0.00% | 0.70% | 0.50%
Adjustments and settlements, % | 0.10% | (0.10%) | 0.10%
Federal and state tax credits, % | (0.20%) | (0.20%) | (0.60%)
Other, net, % | (0.40%) | (0.50%) | (0.40%)
Income tax provision, % | 26.40% | 25.20% | 31.70%

X
- Definition The portion of the effective income tax rate that can be explained by: 1) the amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations; 2) nondeductible expenses under enacted tax laws, or differences in the methodologies used to determine expense amounts for financial statements prepared in accordance with generally accepted accounting principles and enacted tax laws; and 3) state and local income tax expense or benefit. + References No definition available. + Details
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- Definition The portion of the difference between the effective tax rate and the domestic federal statutory income tax rates attributable to income tax settlements and adjustments for the period. + References No definition available. + Details
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- Definition The portion of the income tax provision (benefit) that can be explained by: 1) the amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations; 2) nondeductible expenses under enacted tax laws, or differences in the methodologies used to determine expense amounts for financial statements prepared in accordance with generally accepted accounting principles and enacted tax laws; and 3) state and local income tax expense or benefit. + References No definition available. + Details
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- Definition The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to income tax settlements and adjustments for the period. + References No definition available. + Details
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