Income Taxes (Provision For Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Federal:
Current	$ 0.2	$ (9.5)	$ (9.0)
Deferred	0.0	8.9	8.5
Total Federal	0.2	(0.6)	(0.5)
Foreign:
Current	35.5	31.4	79.0
Deferred	(20.0)	2.6	28.9
Total Foreign	15.5	34.0	107.9
State and Local:
Current	0.5	0.6	(4.3)
Deferred	0.0	0.0	0.0
Total State and other	0.5	0.6	(4.3)
Total	$ 16.2	$ 34.0	$ 103.1