Derivative instruments (Tables)

12 Months Ended

Dec. 31, 2011

Derivative instruments [Abstract]

Effective portion of the unrealized gain (loss) recognized in Other Comprehensive Income for our derivative instruments designated as cash flow hedges

	Years ended December 31,
Derivatives in cash flow hedging relationships	2011			2010			2009
Foreign currency contracts	$	(25	)	$	191		$	(202	)
Cross currency swap contracts		(26	)		—			—
Forward interest rate contracts		—			(5	)		(11	)
Total	$	(51	)	$	186		$	(213	)

Location in the Consolidated Statements of Income and the effective portion of gain/(loss) reclassified from Accumulated Other Comprehensive Income into earnings for our derivative instruments designated as cash flow hedges

		Years ended December 31,
Derivatives in cash flow hedging relationships	Statements of Income location	2011			2010			2009
Foreign currency contracts	Product sales	$	(108	)	$	47		$	(7	)
Cross currency swap contracts	Interest and other income, net		(3	)		—			—
Forward interest rate contracts	Interest expense, net		(1	)		(1	)		(1	)
Total		$	(112	)	$	46		$	(8	)

Location in the Consolidated Statements of Income and the amount of gain/(loss) recognized in earnings for the derivative instruments not designated as hedging instruments

		Years ended December 31,
Derivatives not designated as hedging instruments	Statements of Income location	2011			2010		2009
Foreign currency contracts	Interest and other income, net	$	(1	)	$	32	$	(24	)

Fair values of both derivatives designated as hedging instruments and derivatives not designated as hedging instruments included in the Consolidated Balance Sheets

	Derivative assets			Derivative liabilities
December 31, 2011	Balance Sheet location	Fair value		Balance Sheet location	Fair value
Derivatives designated as hedging instruments:
Interest rate swap contracts	Other current assets/ Other noncurrent assets	$	377	Accrued liabilities/ Other noncurrent liabilities	$	—
Cross currency swap contracts	Other current assets/ Other noncurrent assets		—	Accrued liabilities/ Other noncurrent liabilities		26
Foreign currency contracts	Other current assets/ Other noncurrent assets		172	Accrued liabilities/ Other noncurrent liabilities		48
Total derivatives designated as hedging instruments			549			74
Derivatives not designated as hedging instruments:
Foreign currency contracts	Other current assets		—	Accrued liabilities		—
Total derivatives not designated as hedging instruments			—			—
Total derivatives		$	549		$	74
	Derivative assets			Derivative liabilities
December 31, 2010	Balance Sheet location	Fair value		Balance Sheet location	Fair value
Derivatives designated as hedging instruments:
Interest rate swap contracts	Other current assets/ Other noncurrent assets	$	195	Accrued liabilities/ Other noncurrent liabilities	$	—
Foreign currency contracts	Other current assets/ Other noncurrent assets		154	Accrued liabilities/ Other noncurrent liabilities		103
Total derivatives designated as hedging instruments			349			103
Derivatives not designated as hedging instruments:
Foreign currency contracts	Other current assets		—	Accrued liabilities		—
Total derivatives not designated as hedging instruments			—			—
Total derivatives		$	349		$	103