Significant Accounting Policies (Details 5) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015
Significant Accounting Policies
Beginning balance	$ (61,041)
Other comprehensive income (loss) before reclassifications	(93,036)
Amounts reclassified from accumulated other comprehensive income (loss)	2,246
Net current-period other comprehensive income (loss)	(90,790)
Ending balance	(151,831)
Currency translation adjustments
Significant Accounting Policies
Beginning balance	(110,722)
Other comprehensive income (loss) before reclassifications	(106,514)
Net current-period other comprehensive income (loss)	(106,514)
Ending balance	(217,236)
Accumulated derivative losses, net
Significant Accounting Policies
Beginning balance	(39,161)
Other comprehensive income (loss) before reclassifications	8,618
Amounts reclassified from accumulated other comprehensive income (loss)	2,246
Net current-period other comprehensive income (loss)	10,864
Ending balance	(28,297)
Net unrealized gains (losses) on marketable securities
Significant Accounting Policies
Beginning balance	88,842
Other comprehensive income (loss) before reclassifications	4,860
Net current-period other comprehensive income (loss)	4,860
Ending balance	$ 93,702

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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