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Income Taxes
 6 Months Ended
Jun. 30, 2021
Income Tax Disclosure [Abstract]  
Income Taxes Income TaxesOur Provision for income tax expense of $39.5 million and $11.8 million for the three months ended June 30, 2021 and 2020, respectively, primarily resulted from the application of our estimated effective blended federal and state income tax rate. Our Provision for income tax expense of $74.0 million and $38.9 million for the six months ended June 30, 2021 and 2020, respectively, primarily resulted from the application of our estimated effective blended federal and state income tax rate offset by tax benefits resulting from share-based compensation windfalls.