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Income Taxes (Notes)
 9 Months Ended
Sep. 30, 2021
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
    For the three and nine months ended September 30, 2021, we recorded $31.2 million and $183.6 million, respectively, of income tax expense and had an effective rate of 25.4% and 25.3%, respectively. For the three and nine months ended September 30, 2020, we recorded $34.6 million and $50.0 million, respectively, of income tax expense and had an effective rate of 25.1% in both periods. For all periods, the primary reason for the difference between the federal statutory income tax rate of 21% and the effective tax rate was the effect of state taxes.

    During the nine months ended September 30, 2021 and 2020, cash paid for taxes, net of refunds received, were $203.5 million and $35.3 million, respectively.