Financial Instruments (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) Country	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Minimum
Guarantor Obligations [Line Items]
Number of countries in which entity has currency exposures | Country	30
Stand by letters of credit, bonds and bank guarantees
Guarantor Obligations [Line Items]
Contingent liability outstanding	$ 273.1	$ 232.5		$ 269.4
Stand by letters of credit, bonds and bank guarantees | Minimum
Guarantor Obligations [Line Items]
Fees paid to various banks and insurance companies on face amount of instruments (as a percent)	0.40%
Stand by letters of credit, bonds and bank guarantees | Maximum
Guarantor Obligations [Line Items]
Guarantee term	3 years
Fees paid to various banks and insurance companies on face amount of instruments (as a percent)	3.50%
Net Working Capital Settlement
Guarantor Obligations [Line Items]
Potential amount of future payments for guarantees, maximum	$ 3.0
Guarantee remaining term	4 years
Environmental indemnification for property from a lease terminated in 2006
Guarantor Obligations [Line Items]
Potential amount of future payments for guarantees, maximum	$ 3.0	$ 3.0	$ 3.0