Fair Value Measurements and Derivative Instruments - Non-Derivative Net Investment (Details) (Foreign currency debt, USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net investment hedge
Amount of Gain (Loss) Recognized in OCI (Effective Portion)	$ 13,408	$ (26,347)	$ 18,038	$ (21,593)
Amount of Ineffectiveness on Net Investment Hedges	0	0	0	0
Other income (expense)
Net investment hedge
Amount of Gain (Loss) Recognized in OCI (Effective Portion)	13,408	(26,347)	18,038	(21,593)
Amount of Ineffectiveness on Net Investment Hedges	$ 0	$ 0	$ 0	$ 0