Fair value measurement (Tables)

6 Months Ended

Jun. 30, 2011

Fair value measurement [Abstract]

Fair value of each major class of the company's financial assets and liabilities measured at fair value on a recurring basis

	Quoted prices in		Significant		Significant
	active markets for		other observable		unobservable
Fair value measurement	identical assets		inputs		inputs
as of June 30, 2011 using:	(Level 1)		(Level 2)		(Level 3)		Total
Assets:
Available-for-sale securities:
U.S. Treasury securities	$	2,907	$	—	$	—	$	2,907
Other government related debt securities:
Obligations of U.S. government agencies and FDIC guaranteed bank debt		—		1,559		—		1,559
Foreign and other		—		812		—		812
Corporate debt securities:
Financial		—		2,944		—		2,944
Industrial		—		3,036		—		3,036
Other		—		354		—		354
Mortgage and asset backed securities		—		1,544		—		1,544
Money market mutual funds		5,677		—		—		5,677
Other short-term interest bearing securities		—		157		—		157
Equity securities		47		—		—		47
Derivatives:
Foreign currency contracts		—		50		—		50
Interest rate swap contracts		—		232		—		232
Total assets	$	8,631	$	10,688	$	—	$	19,319
Liabilities:
Derivatives:
Foreign currency contracts	$	—	$	170	$	—	$	170
Contingent consideration obligations in connection with a business combination		—		—		192		192
Total liabilities	$	—	$	170	$	192	$	362
	Quoted prices in		Significant		Significant
	active markets for		other observable		unobservable
Fair value measurement	identical assets		inputs		inputs
as of December 31, 2010 using:	(Level 1)		(Level 2)		(Level 3)		Total
Assets:
Available-for-sale securities:
U.S. Treasury securities	$	5,080	$	—	$	—	$	5,080
Other government related debt securities:
Obligations of U.S. government agencies and FDIC guaranteed bank debt		—		2,208		—		2,208
Foreign and other		—		852		—		852
Corporate debt securities:
Financial		—		2,296		—		2,296
Industrial		—		2,507		—		2,507
Other		—		316		—		316
Mortgage and asset backed securities		—		841		—		841
Money market mutual funds		3,030		—		—		3,030
Other short-term interest bearing securities		—		147		—		147
Equity securities		48		—		—		48
Derivatives:
Foreign currency contracts		—		154		—		154
Interest rate swap contracts		—		195		—		195
Total assets	$	8,158	$	9,516	$	—	$	17,674
Liabilities:
Derivatives:
Foreign currency contracts	$	—	$	103	$	—	$	103
Total liabilities	$	—	$	103	$	—	$	103