Derivatives Forward Contracts (Details) In Millions, unless otherwise specified									3 Months Ended	6 Months Ended
	Jun. 30, 2014 USD ($)	Jun. 30, 2014 JPY (¥)	Dec. 31, 2013 USD ($)	Dec. 31, 2013 JPY (¥)	Mar. 01, 2007 USD ($)	Mar. 01, 2007 JPY (¥)	Sep. 01, 2006 USD ($)	Sep. 01, 2006 JPY (¥)	Jun. 30, 2013 Forward Contracts USD ($)	Jun. 30, 2014 Forward Contracts USD ($)	Jun. 30, 2013 Forward Contracts USD ($)	Jun. 30, 2014 Forward Contracts SEK	Dec. 31, 2013 Forward Contracts USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	$ 1,700.0	¥ 176,200.0	$ 1,900.0	¥ 203,600.0	$ 500.0	¥ 56,000.0	$ 1,700.0	¥ 200,000.0		$ 7.0		47.0	$ 20.4
Derivative, fair value, net										0.1			(0.1)
Realized and unrealized gains (losses)									(0.2)	(0.1)	0.2
Carrying Value										$ 0.1			$ (0.1)