Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Other Taxes (Details)

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Income Taxes - Schedule of Other Taxes (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Tax Disclosure [Abstract]      
Payroll taxes $ 11.7 $ 10.9 $ 11.5
Property and franchise taxes $ 2.5 $ 2.5 $ 2.6