Restructuring Costs and Other Restructuring Costs and Other - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 5.5		$ 5.8
Multiemployer plans, withdrawal obligation, settlement term		19 years
Restructuring Actions 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2.7
Withdrawal from Multiemployer Defined Benefit Plan | Restructuring Actions 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 12.5