Post Employment Plans - Schedule of Amounts Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jun. 27, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
AOCI pension and other postretirement benefit plans	$ (1.3)	$ 9.5	$ 2.9	$ 8.2	[1]
Other Postretirement Benefits Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
AOCI pension and other postretirement benefit plans	$ (0.3)	$ 0.7	$ 0.4	$ (0.1)

[1] Includes Omega activity from March 30, 2015 to June 27, 2015