Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Employer Contributions [Abstract]
Percentage of employer contribution into the employers savings plan (in hundredths)	3.00%
Company's contributions to employee voluntary savings and investment plan	$ 2.0
Maximum percentage of total benefit obligation for international pension plans (in hundredths)	25.00%
Employee vesting period for defined benefit plans (in years)	5 years
Amounts recognized in Balance Sheet [Abstract]
Non-current liability	(146.5)	(57.9)
Amounts recognized in accumulated other comprehensive income [Abstract]
Amount recognized end of year	82.1	51.0
Accumulated benefit obligation	393.3	269.0
Changes in Plan assets and benefit obligations recognized in other comprehensive income [Abstract]
Amortization of prior service credit (gain) loss	(3.5)	7.6
Total recognized in other comprehensive income	31.1	(34.3)	7.7
Weighted average assumptions used to determine net periodic benefit cost [Abstract]
Discount rate (in hundredths)	4.39%	3.80%	4.32%
Expected return on plan assets (in hundredths)	7.34%	7.18%	7.06%
Rate of compensation increase (in hundredths)	3.08%	3.16%	3.11%
Weighted average assumptions used to determine benefit obligation [Abstract]
Discount rate (in hundredths)	3.66%	4.37%	3.77%
Rate of compensation increase (in hundredths)	3.05%	3.10%	3.14%
Actual return (loss) on pension assets (in hundredths)	7.00%	14.00%	9.00%
Maximum health care cost trend rate (in hundredths)	5.00%
Weighted average asset allocations [Abstract]
Weighted average asset allocation percentages, Total (in hundredths)	100.00%	100.00%
Weighted average asset allocations value [Abstract]
Total value	295.8	240.3
Fair value of plan assets [Abstract]
Fair value of plan assets	295.8	240.3
Estimated future benefit payments [Abstract]
Average rate of return on assets (in hundredths)	9.00%
Company's contributions to employee voluntary savings and investment plan	2.9	2.9	2.9
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	217.3	189.5
Significant Other Observable Inputs (Level 2) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	51.9	30.6
Significant Unobservable Inputs (Level 3) [Member]
Change in plan assets [Roll Forward]
Beginning fair value	20.2	18.4
Purchases, sales, settlements	0	0
Actual return on plan assets	2.0	1.8
Acquisition	4.9
Foreign exchange impact	(0.5)	0
Ending fair value	26.6	20.2
Fair value of plan assets [Abstract]
Fair value of plan assets	26.6	20.2
Equity Securities [Member]
Weighted average asset allocations [Abstract]
Weighted average asset allocation percentages, Total (in hundredths)	58.20%	56.50%
Weighted average asset allocations value [Abstract]
Total value	172.3	135.8
Estimated future benefit payments [Abstract]
Target long-term investment portfolio mix (in hundredths)	55.00%
Actual investment portfolio mix (in hundredths)	65.00%
Equity Securities [Member] | US Equities [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	142.1	116.8
Equity Securities [Member] | US Equities [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	132.1	116.8
Equity Securities [Member] | US Equities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	10.0	0
Equity Securities [Member] | US Equities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	0	0
Equity Securities [Member] | Non-US Equities [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	30.2	19.0
Equity Securities [Member] | Non-US Equities [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	22.2	19.0
Equity Securities [Member] | Non-US Equities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	8.0	0
Equity Securities [Member] | Non-US Equities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	0	0
Fixed Income Securities [Member]
Weighted average asset allocations [Abstract]
Weighted average asset allocation percentages, Total (in hundredths)	32.40%	35.10%
Weighted average asset allocations value [Abstract]
Total value	95.7	84.3
Estimated future benefit payments [Abstract]
Target long-term investment portfolio mix (in hundredths)	30.00%
Actual investment portfolio mix (in hundredths)	35.00%
Fixed Income Securities [Member] | Corporate Debt Instruments [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	95.7	84.3
Fixed Income Securities [Member] | Corporate Debt Instruments [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	62.8	53.7
Fixed Income Securities [Member] | Corporate Debt Instruments [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	32.9	30.6
Fixed Income Securities [Member] | Corporate Debt Instruments [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	0	0
Real Estate [Member]
Weighted average asset allocations [Abstract]
Weighted average asset allocation percentages, Total (in hundredths)	0.70%	0.50%
Weighted average asset allocations value [Abstract]
Total value	2.2	1.1
Fair value of plan assets [Abstract]
Fair value of plan assets	2.2	1.1
Real Estate [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	0	0
Real Estate [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	1.0	0
Real Estate [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	1.2	1.1
Other [Member]
Weighted average asset allocations [Abstract]
Weighted average asset allocation percentages, Total (in hundredths)	8.70%	7.90%
Weighted average asset allocations value [Abstract]
Total value	25.6	19.1
Fair value of plan assets [Abstract]
Fair value of plan assets	25.6	19.1
Estimated future benefit payments [Abstract]
Target long-term investment portfolio mix (in hundredths)	0.00%
Actual investment portfolio mix (in hundredths)	15.00%
Other [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	0.2	0
Other [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	0	0
Other [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	25.4	19.1
Pension Benefits [Member]
Change in benefit obligation [Roll Forward]
Beginning projected benefit obligation	289.5	311.0
Service cost	8.9	8.4	8.1
Interest cost	14.9	11.3	11.6
Actuarial (gain)/loss	57.3	(28.0)
Benefits paid	(12.7)	(14.0)
Settlements	0	0
Acquisition	83.3	0
Foreign exchange impact	(7.7)	0.3
Other	0.3	0.5
Ending projected benefit obligation	433.8	289.5	311.0
Change in plan assets [Roll Forward]
Beginning fair value	240.3	211.6
Actual return on plan assets	20.7	31.0
Employer contributions	6.4	10.9
Plan participants' contributions	0.5	0.5
Benefits paid	(12.7)	(14.0)
Settlements	0	0
Acquisition	46.3	0
Foreign exchange impact	(5.7)	0.3
Ending fair value	295.8	240.3	211.6
Funded status of the plan	(138.0)	(49.2)
Amounts recognized in Balance Sheet [Abstract]
Current liability	(0.8)	(0.3)
Non-current liability	(137.2)	(48.9)
Recognized liability	(138.0)	(49.2)
Amounts recognized in accumulated other comprehensive income [Abstract]
Net actuarial (gain) loss	88.4	58.5
Prior service cost	1.0	2.2
Amount recognized end of year	89.4	60.7
Changes in Plan assets and benefit obligations recognized in other comprehensive income [Abstract]
Current year actuarial gain (loss)	(34.0)	26.1
Amortization of actuarial (gain) loss	4.8	8.8
Amortization of prior service credit (gain) loss	0.6	0.6
Total recognized in other comprehensive income	(28.6)	35.5
Components of net periodic benefit cost [Abstract]
Service cost	8.9	8.4	8.1
Interest cost	14.9	11.3	11.6
Expected return on plan assets	(19.4)	(14.8)	(13.5)
Amortization of prior service cost	1.0	1.0	1.2
Recognized net actuarial (gain) loss	7.4	13.9	13.3
Settlement/curtailment loss	0	0	0.2
Net periodic benefit cost	12.8	19.8	20.9
Amounts that will be amortized from Accumulated other comprehensive income (loss) in next fiscal year [Abstract]
Amortization of prior service credit (gain) loss	1.0
Amortization of net (gain) loss	11.8
Total costs to be recognized	12.8
Fair value of plan assets [Abstract]
Expected company contribution to its benefit plans	12.3
Estimated future benefit payments [Abstract]
2015	18.5
2016	20.8
2017	22.5
2018	22.6
2019	23.4
2020-2024	130.1
Post-retirement Benefits [Member]
Change in benefit obligation [Roll Forward]
Beginning projected benefit obligation	9.9	10.6
Service cost	0.4	0.6	0.6
Interest cost	0.4	0.3	0.4
Actuarial (gain)/loss	0.7	(1.1)
Benefits paid	(1.2)	(0.5)
Settlements	0	0
Acquisition	0	0
Foreign exchange impact	(0.1)	0
Other	0	0
Ending projected benefit obligation	10.1	9.9	10.6
Change in plan assets [Roll Forward]
Beginning fair value	0	0
Actual return on plan assets	0	0
Employer contributions	1.2	0.5
Plan participants' contributions	0	0
Benefits paid	(1.2)	(0.5)
Settlements	0	0
Acquisition	0	0
Foreign exchange impact	0	0
Ending fair value	0	0	0
Funded status of the plan	(10.1)	(9.9)
Amounts recognized in Balance Sheet [Abstract]
Current liability	(0.8)	(0.8)
Non-current liability	(9.3)	(9.1)
Recognized liability	(10.1)	(9.9)
Amounts recognized in accumulated other comprehensive income [Abstract]
Net actuarial (gain) loss	(1.0)	(1.6)
Prior service cost	(6.3)	(8.1)
Amount recognized end of year	(7.3)	(9.7)
Changes in Plan assets and benefit obligations recognized in other comprehensive income [Abstract]
Current year actuarial gain (loss)	(0.5)	0.7
Amortization of actuarial (gain) loss	(0.1)	0
Amortization of prior service credit (gain) loss	(1.9)	(1.9)
Total recognized in other comprehensive income	(2.5)	(1.2)
Components of net periodic benefit cost [Abstract]
Service cost	0.4	0.6	0.6
Interest cost	0.4	0.3	0.4
Expected return on plan assets	0	0	0
Amortization of prior service cost	(3.1)	(3.1)	(3.1)
Recognized net actuarial (gain) loss	(0.2)	0	(0.1)
Settlement/curtailment loss	0	0	0
Net periodic benefit cost	(2.5)	(2.2)	(2.2)
Amounts that will be amortized from Accumulated other comprehensive income (loss) in next fiscal year [Abstract]
Amortization of prior service credit (gain) loss	(3.1)
Amortization of net (gain) loss	(0.1)
Total costs to be recognized	(3.2)
Fair value of plan assets [Abstract]
Expected company contribution to its benefit plans	0.8
Estimated future benefit payments [Abstract]
2015	0.8
2016	0.7
2017	0.7
2018	0.8
2019	0.8
2020-2024	4.2
U.S. Plans [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	224.1	170.6	148.2
International Plans [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	$ 71.7	$ 70.1	$ 63.8