Retirement and Other Postretirement Benefit Plans - Schedule of Benefit Obligation, Fair Value of Plan Assets, Funded Status and Amounts Recognized in the Consolidated Financial Statements (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Change in plan assets:
Fair value of plan assets - end of year	$ 165.6	$ 149.3
U.S. Non-qualified Defined Benefit Retirement Plans
Change in benefit obligation:
Benefit obligation - beginning of year	41.9	38.6
Service cost	1.1	1.7	1.3
Interest cost	0.7	0.8	1.1
Actuarial loss (gain)	1.1	1.1
Settlements	(25.4)
Benefits and expenses paid	(0.3)	(0.3)
Benefit obligation - end of year	19.1	41.9	38.6
Settlements	25.4
Change in plan assets:
Employer contributions	25.7	0.3
Benefits and expenses paid	(0.3)	(0.3)
Settlements	(25.4)
Settlements	25.4
Amounts recognized in Consolidated Balance Sheets:
Current liabilities	4.5	23.8
Non-current liabilities	14.6	18.1
Total Liabilities	19.1	41.9
Amounts recognized in Accumulated Other Comprehensive Income:
Actuarial net (loss) gain	(3.8)	(7.3)
Prior service cost		(0.1)
Total amounts recognized in accumulated other comprehensive (loss) income	(3.8)	(7.4)
European Defined Benefit Retirement Plans
Change in benefit obligation:
Benefit obligation - beginning of year	162.7	164.8
Service cost	0.8	0.7	0.5
Interest cost	7.0	6.9	6.6
Plan participants’ contributions	0.1	0.1
Actuarial loss (gain)	26.4	(8.3)
Benefits and expenses paid	(4.7)	(4.9)
Currency translation adjustments	(12.5)	3.4
Benefit obligation - end of year	179.8	162.7	164.8
Change in plan assets:
Fair value of plan assets - beginning of year	149.3	128.3
Actual return on plan assets	25.4	16.2
Employer contributions	6.1	5.9
Plan participants’ contributions	0.1	0.1
Benefits and expenses paid	(4.7)	(4.9)
Currency translation adjustments	(10.6)	3.7
Fair value of plan assets - end of year	165.6	149.3	128.3
Amounts recognized in Consolidated Balance Sheets:
Noncurrent Assets	3.3	2.7
Current liabilities	0.4	0.4
Non-current liabilities	17.1	15.7
Total Liabilities	17.5	16.1
Amounts recognized in Accumulated Other Comprehensive Income:
Actuarial net (loss) gain	(39.3)	(32.2)
Prior service cost	(0.1)	(0.1)
Total amounts recognized in accumulated other comprehensive (loss) income	(39.4)	(32.3)
Postretirement Plans
Change in benefit obligation:
Benefit obligation - beginning of year	6.4	8.1
Interest cost	0.2	0.2	0.3
Plan participants’ contributions	0.1	0.1
Actuarial loss (gain)	(0.1)	(1.6)
Benefits and expenses paid	(0.3)	(0.4)
Benefit obligation - end of year	6.3	6.4	8.1
Change in plan assets:
Employer contributions	0.2	0.3
Plan participants’ contributions	0.1	0.1
Benefits and expenses paid	(0.3)	(0.4)
Amounts recognized in Consolidated Balance Sheets:
Current liabilities	0.6	0.6
Non-current liabilities	5.7	5.8
Total Liabilities	6.3	6.4
Amounts recognized in Accumulated Other Comprehensive Income:
Actuarial net (loss) gain	3.8	4.3
Total amounts recognized in accumulated other comprehensive (loss) income	$ 3.8	$ 4.3