Income Taxes - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Income Tax Contingency [Line Items]
Document Period End Date	Jun. 30, 2020
Tax expense from discrete items	$ (42.0)	$ 5.1
Unrecognized Tax Benefits/Expense, Probability Threshold of Realizing for Tax Benefits/Expense Recognition, Minimum Percentage	50.00%
Effective income tax rate reconciliation CARES Act	$ (33.0)
Effective Income Tax Rate Reconciliation, Uncertain Tax Position	(9.9)
Liability for Uncertainty in Income Taxes, Noncurrent	$ 12.0		$ 21.0