Fair Value Measurements (Details 3) (Foreign Currency Contracts, USD $)	6 Months Ended	12 Months Ended	3 Months Ended		6 Months Ended			3 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Not Designated as Hedges	Jun. 30, 2013 Not Designated as Hedges	Jun. 30, 2014 Not Designated as Hedges	Jun. 30, 2013 Not Designated as Hedges	Dec. 31, 2013 Not Designated as Hedges	Jun. 30, 2014 Designated As Hedges
Derivatives Fair Value [Line Items]
Fair Value, Assets, Not Designated As Hedges							$ 0
Fair Value, Liabilities, Not Designated As Hedges							0
Pre-tax net gain (loss) on foreign currency contracts			0	0	0	0
Fair Value, Assets, Designated As Hedges								0
Fair Value, Liabilities, Designated As Hedges								0
Notional amount of foreign currency derivatives			0		0		34,000,000	119,000,000
Ineffective Portion Relating to these Hedges								$ 0
Maximum length of time over which our foreign currency forward contracts mature	1 year	1 year