Retirement Plans and Other Primary Tables (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 pensionplans	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Minimum Contribution Requirement	$ 0	$ 0	$ 0
Defined Benefit Plan, Other Changes	16
Number of common shares held in rabbi trust (in shares)	0.8	0.8
Amounts recognized in the statement of financial position consist of:
Non-current liabilities	432.5	388.2
U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Number of qualified pension plans maintained by entity	1
Basis of Serp Benefit Compensation Earned Years of Employment	5 years
Accumulated benefit obligation at end of year	177.2	155.8
Change in benefit obligation:
Benefit obligation at beginning of year	162.1	182.3
Service cost	0.9	1.1	1.2
Interest cost	7.2	6.6	7.2
Acquisitions and divestitures	(0.9)	0
Actuarial loss (gain)	25.6	(17.9)
Benefits paid	(10.0)	(10.0)
Foreign Exchange effect	0	0
Benefit obligation at end of year	184.9	162.1	182.3
Change in plan assets:
Fair value of plan assets at beginning of year	125.8	123.6
Actual return on plan assets	15.2	6.4
Employer contribution	5.8	5.8
Employee contribution	0	0	0
Acquisitions	0	0
Benefits paid	(10.0)	(10.0)
Foreign exchange effect	0	0
Fair value of plan assets at end of year	136.8	125.8	123.6
Funded status	(48.1)	(36.3)
Amounts recognized in the statement of financial position consist of:
Current liabilities	1.1	0.2
Non-current liabilities	47.0	36.1
Total liabilities	48.1	36.3
Amounts recognized in accumulated other comprehensive income consist of:
Actuarial net loss	77.8	60.9
Prior service cost	0.6	0.7
Total amounts recognized in accumulated other comprehensive income	78.4	61.6
Weighted-average assumptions as of December 31:
Discount rate	4.02%	4.64%	3.75%
Expected return on plan assets	7.50%	7.50%	7.50%
Rate of compensation increase	3.75%	3.75%	3.75%
Components of net periodic cost:
Service cost	0.9	1.1	1.2
Interest cost	7.2	6.6	7.2
Expected return on plan assets	(9.2)	(9.0)	(8.8)
Recognition of prior service cost	0.1	0.1	0.1
Amortization of actuarial loss	2.1	4.0	4.8
Other	0	0	0
Net periodic cost	1.1	2.8	4.5
Non-U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation at end of year	533.6	492.8
Change in benefit obligation:
Benefit obligation at beginning of year	504.0	511.6
Service cost	5.4	6.0	7.8
Interest cost	18.1	16.6	17.0
Acquisitions and divestitures	4.7	(4.7)
Actuarial loss (gain)	91.3	(20.1)
Benefits paid	(23.7)	(21.2)
Foreign Exchange effect	(59.1)	15.8
Benefit obligation at end of year	540.7	504.0	511.6
Change in plan assets:
Fair value of plan assets at beginning of year	141.9	132.5
Actual return on plan assets	14.9	8.5
Employer contribution	21.5	18.5
Employee contribution	(0.6)	(0.6)	(0.5)
Acquisitions	2.2	0
Benefits paid	(23.7)	(21.2)
Foreign exchange effect	(10.6)	3.0
Fair value of plan assets at end of year	146.8	141.9	132.5
Funded status	(393.9)	(362.1)
Amounts recognized in the statement of financial position consist of:
Current liabilities	13.4	15.0
Non-current liabilities	380.5	347.1
Total liabilities	393.9	362.1
Amounts recognized in accumulated other comprehensive income consist of:
Actuarial net loss	159.6	93.7
Prior service cost	0.3	0.4
Total amounts recognized in accumulated other comprehensive income	159.9	94.1
Weighted-average assumptions as of December 31:
Discount rate	2.54%	3.78%	3.39%
Expected return on plan assets	5.49%	5.49%	5.59%
Rate of compensation increase	1.51%	1.56%	1.67%
Components of net periodic cost:
Service cost	5.4	6.0	7.8
Interest cost	18.1	16.6	17.0
Expected return on plan assets	(7.7)	(7.0)	(6.8)
Recognition of prior service cost	2.5	0	10.8
Amortization of actuarial loss	3.1	5.3	0.4
Other	(0.6)	(0.6)	(0.5)
Net periodic cost	20.8	20.3	28.7
Savings Plan
Defined Benefit Plan Disclosure [Line Items]
Employee Benefits and Share-based Compensation	20.2	16.6	16.3
Other Benefits
Change in benefit obligation:
Benefit obligation at beginning of year	5.8	7.6
Service cost	0	0	0
Interest cost	0.2	0.3	0.3
Acquisitions and divestitures	0	0
Actuarial loss (gain)	0.3	(1.4)
Benefits paid	(0.6)	(0.7)
Foreign Exchange effect	0	0
Benefit obligation at end of year	5.7	5.8	7.6
Change in plan assets:
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Employer contribution	0.6	0.7
Employee contribution	0	0	0
Acquisitions	0
Benefits paid	(0.6)	(0.7)
Foreign exchange effect	0	0
Fair value of plan assets at end of year	0	0	0
Funded status	(5.7)	(5.8)
Amounts recognized in the statement of financial position consist of:
Current liabilities	0.7	0.8
Non-current liabilities	5.0	5.0
Total liabilities	5.7	5.8
Amounts recognized in accumulated other comprehensive income consist of:
Actuarial net loss	1.2	0.9
Prior service cost	(0.1)	(0.1)
Total amounts recognized in accumulated other comprehensive income	1.1	0.8
Weighted-average assumptions as of December 31:
Discount rate	3.74%	4.17%	3.75%
Components of net periodic cost:
Service cost	0	0	0
Interest cost	0.2	0.3	0.3
Expected return on plan assets	0	0	0
Recognition of prior service cost	0	0	0
Amortization of actuarial loss	0.1	0.1	0
Other	0	0	0
Net periodic cost	$ 0.3	$ 0.4	$ 0.3