UNAUDITED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - 6 months ended Jun. 30, 2016 - USD ($) shares in Thousands, $ in Thousands	Total		Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income
Balance at Dec. 31, 2015	$ 8,795,469		$ 482	$ (5,826,640)	$ 5,184,910	$ 9,191,865	$ 244,852
Balance (in shares) at Dec. 31, 2015			62,040	(12,428)
Increase (Decrease) in Stockholders' Equity
Net income	955,062					955,062
Foreign currency translation adjustments, net of tax benefit of $34,156	27,087	[1]					27,087
Unrealized loss on marketable securities, net of tax charge of $34,924	(136,497)	[2]					(136,497)
Exercise of stock options and vesting of restricted stock units and performance share units	9,766		$ 2		9,764
Exercise of stock options and vesting of restricted stock units and/or performance share units (in shares)			304
Repurchase of common stock	(558,668)			$ (558,668)
Repurchase of common stock (in shares)				(438)
Stock-based compensation and other stock-based payments	121,016				121,016
Excess tax benefits on stock-based awards and other equity deductions	61,470				61,470
Balance (in shares) at Jun. 30, 2016			62,344	(12,866)
Balance at Jun. 30, 2016	$ 9,274,705		$ 484	$ (6,385,308)	$ 5,377,160	$ 10,146,927	$ 135,442

[1] (1) Foreign currency translation adjustments include a tax charge of $26,940 and a tax benefit of $34,156 for the three and six months ended June 30, 2016, respectively, and a tax benefit of $34,586 and a tax charge of $42,019 for the three and six months ended June 30, 2015, respectively, associated with net investment hedges (See Note 10). The remaining balance in foreign currency translation adjustments excludes income taxes due to the Company's practice and intention to indefinitely reinvest the earnings of its international subsidiaries outside of the United States (See Note 9).

[2] Net of tax charges of $5,796 and $34,924 for the three and six months ended June 30, 2016, respectively, and net of tax benefits of $11,596 and $1,620 for the three and six months ended June 30, 2015, respectively.