Derivative Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			1 Months Ended					12 Months Ended					12 Months Ended										12 Months Ended
	Dec. 31, 2013 item	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2013 Interest Rate Swap Agreements item	Jun. 30, 2013 Interest Rate Swap Agreements	Dec. 31, 2013 Interest Rate Swap Agreements	Jun. 30, 2012 Interest Rate Swap Agreements	Dec. 31, 2010 Interest Rate Swap Agreements	Dec. 31, 2013 Interest Rate Swap Agreements U.S. dollars	Dec. 31, 2013 Foreign Currency Forward Exchange Contracts	Dec. 31, 2012 Foreign Currency Forward Exchange Contracts	Dec. 31, 2011 Foreign Currency Forward Exchange Contracts	Dec. 31, 2013 Cash flow hedges Interest Rate Swap Agreements	Dec. 31, 2013 Cash flow hedges Foreign Currency Forward Exchange Contracts	Dec. 31, 2012 Cash flow hedges Foreign Currency Forward Exchange Contracts	Dec. 31, 2011 Cash flow hedges Foreign Currency Forward Exchange Contracts	Dec. 31, 2013 Designated as Hedging Instrument Interest Rate Swap Agreements	Jun. 30, 2013 Designated as Hedging Instrument Interest Rate Swap Agreements	Dec. 31, 2012 Designated as Hedging Instrument Interest Rate Swap Agreements	Jun. 30, 2012 Designated as Hedging Instrument Interest Rate Swap Agreements	Dec. 31, 2010 Designated as Hedging Instrument Interest Rate Swap Agreements	Dec. 31, 2013 Designated as Hedging Instrument Foreign Currency Forward Exchange Contracts	Dec. 31, 2012 Designated as Hedging Instrument Foreign Currency Forward Exchange Contracts	Dec. 31, 2013 Designated as Hedging Instrument Cash flow hedges Foreign Currency Forward Exchange Contracts	Dec. 31, 2012 Designated as Hedging Instrument Cash flow hedges Foreign Currency Forward Exchange Contracts	Dec. 31, 2011 Designated as Hedging Instrument Cash flow hedges Foreign Currency Forward Exchange Contracts	Dec. 31, 2013 Not Designated as Hedging Instrument Foreign Currency Forward Exchange Contracts	Dec. 31, 2012 Not Designated as Hedging Instrument Foreign Currency Forward Exchange Contracts	Dec. 31, 2011 Not Designated as Hedging Instrument Foreign Currency Forward Exchange Contracts
Derivative Financial Instruments
Floating rate obligation																				$ 75	$ 98
Fixed interest rate (as a percent)						81.567%	0.6725%	1.03%					0.81567%
Variable rate basis									LIBOR
Notional amount													150.0				150.0	98.0				187.1	201.2
Swap charges related to derivatives					0.4
Amount paid on termination and settlement of swaps				0.5
Number of derivative contracts entered				3
Carrying value / fair value of derivative assets included in other assets																						11.5	3.6				2.6	3.1
Carrying value / fair value of derivative liabilities included in other liabilities																	0.6		1.0			0.6	1.6				0.1	0.5
Gains (losses) in other comprehensive income, effective portion														7.9	6.4	2.9
Recorded in gross margin																								0.4	(3.1)	3.1
Number of credit contingency features	0
Net gains (losses) on derivative contracts not designated as hedges																											7.6	5.3	(4.8)
Accumulated other comprehensive income, change in fair value of foreign currency forward exchange contracts under hedge designations
Unrealized gains (losses) at beginning of period	2.2									2.4	(4.5)	(0.2)
(Losses) gains reclassified to net sales										(0.3)	2.4	(2.2)
Increase (decrease) in fair value, net of tax of $2.8 million, $1.9 million and ($0.8) million in 2013, 2012 and 2011 respectively										5.1	4.5	(2.1)
Unrealized gains (losses) at end of period, net of tax	8.2	2.2								7.2	2.4	(4.5)
Increase (decrease) in fair value, tax amount	2.8	1.9	(0.8)
Foreign currency unrealized gains expected to be reclassified into earnings over next twelve months	4.8
Foreign currency unrealized gains expected to be reclassified into earnings over next twelve months, tax	$ 2.3