3. Fair Value Measurements Foreign Exchange Forward Contracts (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Unrealized loss	$ 0
Unrealized loss	0.5
Notional amount of foreign currency derivative sale contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	83.8
Notional amount of foreign currency derivative purchase contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	$ 409.4