Income Taxes Income Tax Reconciliation Nondeductible Expense Uncertain Tax Position (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Income Tax Contingency [Line Items]
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount	$ 3.3	$ 8.3
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	1.5	39.0
Effective Income Tax Rate Reconciliation, Tax Contingency, Other, Amount	1.8	4.8
Tax Adjustments, Settlements, and Unusual Provisions	1.9	60.0
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount	$ 8.5	$ 7.9