Income Taxes Uncertain Tax Provisions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Changes in unrecognized tax benefits for all jurisdictions were as follows:
Gross unrecognized tax benefits, beginning of period	$ 25.2	$ 124.6	$ 36.9
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	0.9	0.7	84.7
Current year tax positions	3.0	3.0	3.0
Prior year tax positions - decreases	(3.8)	(99.7)	0.0
Unrecognized Tax Benefits, Increase Resulting from Foreign Currency Translation	0.5		0.0
Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation		(3.4)
Gross unrecognized tax benefits, end of period	25.8	25.2	$ 124.6
Income Tax Contingency [Line Items]
The amount of unrecognized tax benefits that, if recognized, would affect our effective tax rate in future periods	22.6
Accrued interest and penalties related to unrecognized tax benefits, which are reflected in other noncurrent liabilities	6.4	$ 5.0
Non-US
Income Tax Contingency [Line Items]
Prior year tax positions - increases	0.5
US and non-US [Domain]
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits That Impacted Effective Tax Rate	$ 3.0