Postemployment Benefits Change in Benefit Obligation (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Health and Welfare [Member]
Benefit Plan, Change In Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	$ 5.5		$ 6.5
Service cost	0.1		0.1		0.1
Interest cost	0.2		0.2		0.2
Actuarial (gain) loss	0.9	[1]	(0.9)	[1]	0.1	[1]
Foreign currency (gain) loss	0		0		0
Benefits paid, net of retiree contributions	(0.4)		(0.4)
Benefit obligation at end of year	6.3		5.5		6.5
Funded status	(6.3)		(5.5)
Postemployment Benefits [Member]
Benefit Plan, Change In Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	12.8		13.2
Service cost	0.8		0.9		0.9
Interest cost	1.0		0.9		0.8
Actuarial (gain) loss	3.8	[1]	(1.0)	[1]	3.1	[1]
Foreign currency (gain) loss	(1.5)		(0.1)		0.6
Benefits paid, net of retiree contributions	(0.8)		(1.1)
Benefit obligation at end of year	16.1		12.8		13.2
Funded status	$ (16.1)		$ (12.8)

[1] Net benefit costs above do not include a component for the amortization of actuarial gains or losses as the Company’s policy is to recognize such gains and losses immediately.