Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Selling, General and Administrative Expense [Member]
Pension liability adjustment	$ 3.0	$ 2.6	$ 9.0	$ 7.8