Benefit Plans - Additional Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	0 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Estimated cash contributions by employer in 2015	$ 1.8
Pension Costs
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	0.6
Foreign Pension Plan, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, number of plan participants	270
Defined benefit plan, plan participants, number of active employees	90
Foreign Pension Plan, Defined Benefit | Minimum
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, cash requirement for final accrued benefits		1.0
Defined benefit plan, estimated one-time termination benefits in current fiscal year		8.0
Defined benefit plan, estimated one-time termination benefits in current fiscal year, net of tax		6.0
Foreign Pension Plan, Defined Benefit | Maximum
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, cash requirement for final accrued benefits		3.0
Defined benefit plan, estimated one-time termination benefits in current fiscal year		11.0
Defined benefit plan, estimated one-time termination benefits in current fiscal year, net of tax		$ 8.0