Income Taxes (Provision For Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current
United States	$ 52.1	$ 30.2	$ 54.1
Outside United States	321.8	373.7	298.3
Total current	373.9	403.9	352.4
Deferred
United States	19.5	71.4	(7.2)
Outside United States	29.3	70.2	(164.9)
Total deferred	48.8	141.6	(172.1)
Provision for income taxes	$ 422.7	$ 545.5	$ 180.3