Fair Value Measurements and Derivative Instruments - Non-Derivative Net Investment (Details) (Foreign currency debt, USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Net investment hedge
Amount of Gain (Loss) Recognized in OCI (Effective Portion)	$ 4,374	$ 12,732
Amount of Ineffectiveness on Net Investment Hedges	0	0
Other income (expense)
Net investment hedge
Amount of Gain (Loss) Recognized in OCI (Effective Portion)	4,374	12,732
Amount of Ineffectiveness on Net Investment Hedges	$ 0	$ 0

Current period adjustment in other comprehensive income reflecting gains or losses on foreign currency transactions that are designated as, and are effective as, hedges of a net investment in a foreign entity, net of tax effect.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 30

-Section 45

-Paragraph 20

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32211-110900

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration