Restructuring and Other Charges (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2017	Mar. 31, 2017
Restructuring And Related Activities [Abstract]
Additional costs associated with previously identified restructuring activities	$ 9.5
Restructuring pre-tax net charges		$ 22.6
Net realizable value write-offs on contract accounts receivables		16.5
Statutory redundancy and severance costs		1.4
Other liabilities		$ 4.7
Additional charges recorded under business exit	$ 1.2