Income Taxes (Provision For Income Taxes From Continuing Operations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Expense (Benefit), Continuing Operations, by Jurisdiction [Abstract]
Federal U.S., current	$ 448.3	$ 237.2	$ 213.4
Non-U.S., current	457.2	542.9	273.0
State and local, current	(9.6)	61.7	(9.5)
Federal U.S., deferred	(424.7)	(237.5)	(83.8)
Non-U.S., deferred	(61.5)	(104.2)	(121.5)
State and local, deferred	59.3	(42.2)	21.1
Income tax provision	$ 469.0	$ 457.9	$ 292.7