Income Taxes (Provision For Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current
United States	$ 34.7	$ 52.1	$ 30.2
Outside United States	317.0	321.8	373.7
Total current	351.7	373.9	403.9
Deferred
United States	2.6	19.5	71.4
Outside United States	(78.0)	29.3	70.2
Total deferred	(75.4)	48.8	141.6
Provision for income taxes	$ 276.3	$ 422.7	$ 545.5