Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2011

Fair Value Measurements [Abstract]

Financial Assets And (Liabilities) Measured At Fair Value On A Recurring Basis

The following table summarizes our financial assets and (liabilities) measured at fair value on a recurring basis as of September 30, 2011:

	Level 1		Level 2			Level 3		Total
Cash equivalents:
Money market funds	$	319,761	$	—		$	—	$	319,761
Time deposits		—		4,523			—		4,523
Commercial paper		—		22,094			—		22,094
Total cash equivalents		319,761		26,617			—		346,378
Investments:
Time deposits		—		294,265			—		294,265
Available-for-sale securities:
U.S. Treasury and agency debt securities		313,564		148,385			—		461,949
Corporate and other debt securities		—		199,014			—		199,014
Asset-backed debt securities		—		97,661			—		97,661
Municipal debt securities		—		44,579			—		44,579
Foreign government debt securities		—		12,589			—		12,589
Total available-for-sale securities		313,564		502,228			—		815,792
Total investments		313,564		796,493			—		1,110,057
Derivative financial instruments – foreign exchange forward contracts:
Other current assets		—		14,384			—		14,384
Accrued expenses and other current liabilities		—		(35,272	)		—		(35,272	)
Other noncurrent assets		—		1,046			—		1,046
Other noncurrent liabilities		—		(36,177	)		—		(36,177	)
Total	$	633,325	$	767,091		$	—	$	1,400,416

The following table summarizes our financial assets and (liabilities) measured at fair value on a recurring basis as of December 31, 2010:

	Level 1		Level 2			Level 3		Total
Cash equivalents:
Money market funds	$	421,424	$	—		$	—	$	421,424
Time deposits		—		67,703			—		67,703
Total cash equivalents		421,424		67,703			—		489,127
Investments:
Time deposits		—		139,391			—		139,391
Available-for-sale securities:
U.S. Treasury and agency debt securities		268,114		72,270			—		340,384
Corporate and other debt securities		—		122,909			—		122,909
Asset-backed debt securities		—		33,154			—		33,154
Municipal debt securities		—		41,655			—		41,655
Foreign government debt securities		—		7,926			—		7,926
Total available-for-sale securities		268,114		277,914			—		546,028
Total investments		268,114		417,305			—		685,419
Derivative financial instruments – foreign exchange forward contracts:
Other current assets		—		30,983			—		30,983
Accrued expenses and other current liabilities		—		(7,504	)		—		(7,504	)
Other noncurrent assets		—		8,144			—		8,144
Other noncurrent liabilities		—		(6,601	)		—		(6,601	)
Total	$	689,538	$	510,030		$	—	$	1,199,568