Derivatives Forward Contracts (Details) (Forward Contracts) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2013 SEK
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	$ 41.0		$ 41.0		276.4
Changes in derivative instruments
Beginning balance	(0.2)	0	(0.1)	0
Purchases	0	0	0	0
Realized and unrealized gains (losses)	(0.2)	0	0.2	0
Sales/settlements	0.3	0	(0.2)	0
Ending balance	$ (0.1)	$ 0	$ (0.1)	$ 0