Schedule Of Payables And Other Current Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Additional Information [Line Items]
Accounts payable	$ 38.2	$ 53.9
Accrued taxes	29.1	44.1
Accrued payroll-related expenses	137.1	132.0
Derivative Liabilities	25.6	33.6
Accrued expenses, other	64.4	63.7
Restructuring and exit costs	7.4	0.8
Deferred Revenue, Current	12.3	17.7
Accounts Payable and Accrued Liabilities, Current	$ 314.1	$ 345.8