UNAUDITED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Stockholders' Equity [Abstract]
Tax (benefit) associated with Net Investment Hedges	$ 18,046	$ (42,253)	$ 33,391	$ (27,969)
Tax (benefit) associated with gain (loss) on marketable securities	$ (8,747)	$ 452	$ (8,693)	$ 201