Benefit Plans (Textuals) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
401 (k) plan contributions	$ 4.3	$ 4.0	$ 3.7
Accumulated benefit obligation	391.0	355.4
Expected contribution to the plan	23.3
Assumed healthcare cost trend rate, benefit obligation	7.00%
Ultimate healthcare cost trend rate, benefit obligation	5.00%
Effect of one percentage point increase on benefit obligation	0.3
Effect of one percentage point decrease on benefit obligation	0.3
Assumed healthcare cost trend rate, net periodic benefit cost	7.50%
Ultimate healthcare cost trend rate, net periodic benefit cost	5.00%
Effect of one percentage point increase on service and interest cost	0.1
Effect of one percentage point decrease on service and interest cost	0
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial net loss that will be amortized from accumulated other comprehensive loss	6.5
Transition obligation that will be amortized from accumulated other comprehensive loss	0.1
Prior service credit that will be amortized from accumulated other comprehensive loss	(1.3)
Discount rate	3.96%	4.82%
Rate of compensation increase	4.14%	4.37%
Long-term rate of return on assets	7.01%	7.12%	7.37%
U.S. Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to the plan	20.0
International Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	60.2	56.6
Expected contribution to the plan	2.1
Discount rate	2.99%	3.92%
Rate of compensation increase	2.74%	2.80%
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.15%	5.00%
Rate of compensation increase	4.25%	4.50%
Percentage of global plan assets	91.00%
Long-term rate of return on assets	7.25%	7.25%	7.50%
U.S. SERP Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to the plan	1.2
Other Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial net loss that will be amortized from accumulated other comprehensive loss	(1.4)
Expected contribution to the plan	$ 0.8
Discount rate	3.90%	4.55%