Long-Term Debt (Details) (USD $) In Millions, unless otherwise specified		1 Months Ended
	Jun. 30, 2014	Feb. 28, 2014 Industrial Development Debt Payable Through 2022, 0.30%	Jun. 30, 2014 Revolving Credit Facility	Jun. 30, 2014 Unspecified Arrangement	Jun. 30, 2014 Senior Notes	Jun. 02, 2014 Senior Notes Senior Note due June 2, 2017
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 300.0					$ 100.0
Increase in the senior credit facility	150.0
Line of credit facility, remaining borrowing capacity	162.4
Debt instrument, potential face amount					175.0
Letters of credit and bank guarantees outstanding, amount	7.1
Line of credit facility, amount outstanding			2.6
Restricted cash and cash equivalents				2.3
Voluntary retirement payments guaranteed	4.1
Extinguishment of debt, amount		$ 4.0