Income Taxes (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Unrecognized income tax benefits that would affect effective tax rate	$ 229.4	$ 210.7
Unrecognized tax benefits	50.9	44.9
Accrued or deferred taxes relating to uncertain income tax positions	53.4	51.0
Accrued interest and penalties relating to unrecognized tax benefits	$ 33.8	$ 28.4