Severance and Retention Costs related to our Restructured Operations, Restructured European Operations (Details) - Restructured European Operations [Member] - USD ($) $ in Millions	12 Months Ended		24 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021
Severance and Retention Costs related to our Restructured European Operations [Abstract]
Beginning balance	$ 12.4
Amount expensed during the year	2.6
Reserve adjustments during the year	(0.9)
Net amount expensed during the year	1.7	$ 12.5	$ 14.2
Amounts paid during the year	(14.1)
Ending balance	0.0	12.4	$ 0.0
R&D Expenses [Member]
Severance and Retention Costs related to our Restructured European Operations [Abstract]
Net amount expensed during the year	0.6	4.2
SG&A Expenses [Member]
Severance and Retention Costs related to our Restructured European Operations [Abstract]
Net amount expensed during the year	$ 1.1	$ 8.3