Long-Term Debt (Details) (USD $) In Millions, unless otherwise specified			1 Months Ended
	Sep. 30, 2014	Mar. 07, 2014	Feb. 28, 2014 Industrial Development Debt Payable Through 2022, 0.30%	Sep. 30, 2014 Revolving Credit Facility	Sep. 30, 2014 Unspecified Arrangement	Sep. 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	173.3
Debt instrument, potential face amount						175.0
Letters of credit and bank guarantees outstanding, amount	6.3			2.7
Restricted cash and cash equivalents					2.3
Voluntary retirement payments guaranteed	4.1
Extinguishment of debt, amount			$ 4.0