Cost Reduction Plans - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Restructuring and Related Activities [Abstract]
Estimated restructuring and related costs over next four years	$ 235.1
Capital expenditures expected over next four years	60.5
Restructuring plan cost	89.3
Capital expenditures to support the CIP	33.3
Accelerated depreciation	$ 0.4	$ 0.1