Status of Defined Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Change in Plan Assets:
Fair value of plan assets at beginning of year	$ 101.8
Fair value of plan assets at end of year	66.2	$ 101.8
Pension Costs
Change in Benefit Obligation:
Benefit obligation at beginning of year	101.2	100.6
Service cost	0.3	0.9	$ 1.1
Interest cost	2.9	4.2	4.0
Plan participants’ contributions	0.0	0.0
Actuarial loss (gain)	(2.7)	10.3
Settlements/curtailments	(26.5)	(3.1)
Effects of exchange rate changes / other	(6.8)	(7.4)
Benefits paid	(4.2)	(4.3)
Benefit obligation at end of year	64.2	101.2	100.6
Change in Plan Assets:
Fair value of plan assets at beginning of year	101.8	100.2
Actual return on plan assets (net of expenses)	2.4	11.1
Employer contributions	3.0	3.3
Plan participants’ contributions	0.0	0.0
Settlements/curtailments	(29.9)	(1.2)
Effects of exchange rate changes / other	(6.9)	(7.3)
Benefits paid	(4.2)	(4.3)
Fair value of plan assets at end of year	66.2	101.8	100.2
Funded status at end of year, recorded in Pension and Postretirement Benefits	2.0	0.6
Amounts Recognized in Accumulated Other Comprehensive Income:
Prior Service Credit	0.0	0.1
Actuarial Loss	12.0	19.8
Net Loss (Income) Recognized in Accumulated Other Comprehensive Income	12.0	19.9
Nonpension Postretirement Costs
Change in Benefit Obligation:
Benefit obligation at beginning of year	24.5	21.8
Service cost	0.2	0.2	0.4
Interest cost	0.9	1.0	1.1
Plan participants’ contributions	0.3	0.3
Actuarial loss (gain)	(2.4)	3.0
Settlements/curtailments	0.0	0.0
Effects of exchange rate changes / other	(0.9)	(0.5)
Benefits paid	(1.3)	(1.3)
Benefit obligation at end of year	21.3	24.5	21.8
Change in Plan Assets:
Fair value of plan assets at beginning of year	0.0	0.0
Actual return on plan assets (net of expenses)	0.0	0.0
Employer contributions	1.0	1.0
Plan participants’ contributions	0.3	0.3
Settlements/curtailments	0.0	0.0
Effects of exchange rate changes / other	0.0	0.0
Benefits paid	(1.3)	(1.3)
Fair value of plan assets at end of year	0.0	0.0	$ 0.0
Funded status at end of year, recorded in Pension and Postretirement Benefits	(21.3)	(24.5)
Amounts Recognized in Accumulated Other Comprehensive Income:
Prior Service Credit	(0.2)	(0.8)
Actuarial Loss	0.9	3.5
Net Loss (Income) Recognized in Accumulated Other Comprehensive Income	$ 0.7	$ 2.7