Income Taxes (Provision For Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Federal:
Current	$ (9.5)	$ (9.0)	$ (6.1)
Deferred	8.9	8.5	3.7
Total Federal	(0.6)	(0.5)	(2.4)
Foreign:
Current	31.4	79.0	182.3
Deferred	(2.6)	(28.9)	53.0
Total Foreign	34.0	107.9	129.3
State and Local:
Current	0.6	(4.3)	3.0
Deferred	0.0	0.0	0.0
Total State and other	0.6	(4.3)	3.0
Total	$ 34.0	$ 103.1	$ 129.9