Income Taxes (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Unrecognized income tax benefits that would affect effective tax rate	$ 219.4	$ 210.7
Unrecognized tax benefits	50.7	44.9
Accrued or deferred taxes relating to uncertain income tax positions	50.3	51.0
Accrued interest and penalties relating to unrecognized tax benefits	$ 29.9	$ 28.4