Retirement Plans (Details)	1 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($) plan	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Defined Benefit Plan [Line Items]
Pension liability	$ 3,000,000	$ 3,000,000		$ 3,300,000
Settlement of defined benefit plan	2,000,000
Pension expense		1,000,000
Long term pension withdrawal liability payment	$ 2,000,000	$ 2,000,000		$ 145,400
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate				4.50%
United States Pension Plan of US Entity
Defined Contribution Plan Disclosure [Line Items]
Cost of defined contribution plans			$ 9,500,000	$ 8,000,000	$ 8,200,000
Switzerland | Foreign Pension Plan
Defined Benefit Plan [Line Items]
Contributions to pension funds			$ 2,500,000	$ 2,300,000	$ 2,200,000
United States Defined Contribution Plan
Defined Contribution Plan Disclosure [Line Items]
Number of defined contribution retirement plans | plan			5
Foreign Defined Contribution Plan
Defined Contribution Plan Disclosure [Line Items]
Number of defined contribution retirement plans | plan			4
Foreign Defined Contribution Plan | Minimum
Defined Contribution Plan Disclosure [Line Items]
Entity's contribution to retirement plans as percentage of employees' compensation			3.00%
Foreign Defined Contribution Plan | Maximum
Defined Contribution Plan Disclosure [Line Items]
Entity's contribution to retirement plans as percentage of employees' compensation			15.00%