Income Taxes (Reconciliation Of Gross Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Gross unrecognized tax benefits, beginning balance	$ 5.3	$ 6.4	$ 8.2
Gross increases—tax positions in prior periods 1	0.7	2.9	0.0
Gross decreases—tax positions in prior periods	(0.3)	(0.4)	(0.4)
Gross increases—current period tax positions	0.7	0.6	0.7
Change due to exchange rate fluctuations	(0.1)	0.1	0.0
Settlements 1	0.0	(3.2)	0.0
Lapse of statute of limitations	(1.0)	(1.1)	(2.1)
Gross unrecognized tax benefits, ending balance	5.3	5.3	6.4
Interest	1.1	1.4	1.9
Penalties	0.2	0.2	0.3
Total gross unrecognized tax benefits	$ 6.6	$ 6.9	$ 8.6