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Income Taxes - Tax Rate Reconciliation (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
Federal tax provision at statutory rate | $ 78.8 | $ 70.9 | $ 121.5
State taxes, net of federal income tax benefit | 23.6 | 16.1 | 13.3
Non-deductible items | 2.6 | 1.5 | 1.3
Permanent differences related to stock compensation | 0.2 | (0.1) | (0.8)
Net change in valuation allowance | (0.5) | 0.5 | 0.3
General business credits | (0.9) | (1.1) | (0.9)
Deferred remeasurement for change in statutory tax rate | 0.0 | (15.8) | (32.9)
Other | 0.1 | (0.2) | 0.1
Total | $ 103.9 | $ 71.8 | $ 101.9

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