Consolidated Statements of Comprehensive Income (Loss) (Parentheticals) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income recognized in other comprehensive income, interest rate hedges, tax	$ 3.0	$ (0.3)	$ (0.4)
Derivatives, reclassification adjustment for amounts recognized in net income, tax	0.0	(0.2)	(0.1)
Net prior service benefit amortization, tax	0.0	0.0	0.1
Net actuarial loss recognized during the year, tax	(3.3)	(1.8)	(2.7)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Costs Arising During Period, Tax	(0.5)	0.0	0.0
Net actuarial (gains) losses occurring during the year, tax	(6.6)	(8.3)	(1.3)
Net prior service benefit amortization due to curtailment, tax	0.0	1.5	0.0
Net actuarial losses recognized due to settlement, tax	0.4	0.0	0.0
Acquired benefit plans and other	1.5	0.0	0.0
Other Comprehensive Income (Loss), Defined Benefit Plan, Newly Accounted Plans		0.0	0.0
Currency impact, tax	(1.9)	0.4	0.0
Translation adjustment
Translation adjustment and foreign currency hedges, tax	8.4	(0.6)	5.3
Foreign currency hedges
Translation adjustment and foreign currency hedges, tax	$ 6.2	$ (4.0)	$ (0.3)