Fair Value (Tables)

3 Months Ended

Mar. 31, 2012

Fair Value [Abstract]

Fair value of financial assets and liabilities

	Fair Value Measurements as of March 31, 2012:
	Total		Level 1		Level 2		Level 3
	(In thousands)
Assets
Cash equivalents – money market funds	$	529,194	$	529,194	$	—	$	—
Available-for-sale securities		3,287		3,287		—		—
Trading securities held in Non-Qualified Deferred Compensation Plan, or NQDC		21,986		21,986		—		—
2015 Notes Hedges		257,775		—		257,775		—
Foreign currency exchange contracts		170		—		170		—
Total Assets	$	812,412	$	554,467	$	257,945	$	—
	Total		Level 1		Level 2		Level 3
	(In thousands)
Liabilities
Acquisition-related contingent consideration	$	3,987	$	—	$	—	$	3,987
2015 Notes Embedded Conversion Derivative		257,775		—		257,775		—
Total Liabilities	$	261,762	$	—	$	257,775	$	3,987
	Fair Value Measurements as of December 31, 2011:
	Total		Level 1		Level 2		Level 3
	(In thousands)
Assets
Cash equivalents – money market funds	$	484,102	$	484,102	$	—	$	—
Available-for-sale securities		3,037		3,037		—		—
Trading securities held in NQDC		24,058		24,058		—		—
2015 Notes Hedges		215,113		—		215,113		—
Foreign currency exchange contracts		200		—		200		—
Total Assets	$	726,510	$	511,197	$	215,313	$	—
	Total		Level 1		Level 2		Level 3
	(In thousands)
Liabilities
Acquisition-related contingent consideration	$	3,911	$	—	$	—	$	3,911
2015 Notes Embedded Conversion Derivative		215,113		—		215,113		—
Total Liabilities	$	219,024	$	—	$	215,113	$	3,911

Liabilities included in level 3 representing fair value of contingent consideration associated with acquisitions

The following table summarizes the level 3 activity for the three months ended March 31, 2012:

	(In thousands)
Balance as of December 31, 2011	$	3,911
Payments		(39	)
Adjustments		115
Balance as of March 31, 2012	$	3,987