Accounts Payable And Accrued Expenses (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Payables And Accruals [Abstract]
Payables, trade and other	$ 108.6	$ 127.5
Employment costs	33.7	44.7
Current portion of pension and postretirement benefit liabilities	12.7	14.3
Contingent liability related to discontinued operations	11.9	12.1
Other	30.2	32.5
Total accounts payable and accrued expenses	$ 197.1	$ 231.1