Other, Net (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Deconsolidation, Gain (Loss), Amount				$ 24.9
Interest Income, Other	$ 1.3	$ 1.1
Foreign Currency Transaction Gain (Loss), before Tax	3.6	3.7
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	1.2	(5.7)
Other, net	0.4	1.1
Other income/(expense), net	$ (0.7)	$ (7.2)
Charge to increase Funding Liability			$ 21.2
Continuing Operations [Member]
Deconsolidation, Gain (Loss), Amount				$ 0.9
Charge to increase Funding Liability			$ 7.2