Derivative instruments (Tables)

3 Months Ended

Mar. 31, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts and Interest Rates for Cross-Currency Swaps [Table Text Block]

The notional amounts and interest rates of our cross-currency swaps are as follows (notional amounts in millions):

	Foreign currency				U.S. dollars
Hedged notes	Notional Amount		Interest rate		Notional Amount		Interest rate
2.125% 2019 euro Notes	€	675	2.125	%	$	864	2.6	%
5.50% 2026 pound sterling Notes	£	475	5.50	%	$	748	5.8	%
4.00% 2029 pound sterling Notes	£	700	4.00	%	$	1,122	4.3	%

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

The effective portion of the unrealized gain/(loss) recognized in other comprehensive income for our derivative instruments designated as cash flow hedges was as follows (in millions):

	Three months ended
	March 31,
Derivatives in cash flow hedging relationships	2013			2012
Foreign currency contracts	$	100		$	(87	)
Cross-currency swap contracts	(125		)	8
Total	$	(25	)	$	(79	)

Location in the Condensed 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

The location in the Condensed Consolidated Statements of Income and the effective portion of the gain/(loss) reclassified out of AOCI into earnings for our derivative instruments designated as cash flow hedges were as follows (in millions):

		Three months ended
		March 31,
Derivatives in cash flow hedging relationships	Statements of Income location	2013			2012
Foreign currency contracts	Product sales	$	(4	)	$	11
Cross-currency swap contracts	Interest and other income, net	(140		)	13
Total		$	(144	)	$	24

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

The location in the Condensed Consolidated Statements of Income and the amount of gain/(loss) recognized in earnings for our derivative instruments not designated as hedging instruments were as follows (in millions):

		Three months ended
		March 31,
Derivatives not designated as hedging instruments	Statements of Income location	2013			2012
Foreign currency contracts	Interest and other income, net	$	(16	)	$	(10	)

Fair values of derivatives included in the Condensed Consolidated Balance Sheets

The fair values of derivatives included in the Condensed Consolidated Balance Sheets were as follows (in millions):

	Derivative assets			Derivative liabilities
March 31, 2013	Balance Sheet location	Fair value		Balance Sheet location	Fair value
Derivatives designated as hedging instruments:
Cross-currency swap contracts	Other current assets/ Other noncurrent assets	$	8	Accrued liabilities/ Other noncurrent liabilities	$	72
Foreign currency contracts	Other current assets/ Other noncurrent assets	107		Accrued liabilities/ Other noncurrent liabilities	21
Interest rate swap contracts	Other current assets/ Other noncurrent assets	22		Accrued liabilities/ Other noncurrent liabilities	—
Total derivatives designated as hedging instruments		137			93
Derivatives not designated as hedging instruments:
Foreign currency contracts	Other current assets	1		Accrued liabilities	—
Total derivatives not designated as hedging instruments		1			—
Total derivatives		$	138		$	93

	Derivative assets			Derivative liabilities
December 31, 2012	Balance Sheet location	Fair value		Balance Sheet location	Fair value
Derivatives designated as hedging instruments:
Cross-currency swap contracts	Other current assets/ Other noncurrent assets	$	65	Accrued liabilities/ Other noncurrent liabilities	$	6
Foreign currency contracts	Other current assets/ Other noncurrent assets	45		Accrued liabilities/ Other noncurrent liabilities	58
Total derivatives designated as hedging instruments		110			64
Derivatives not designated as hedging instruments:
Foreign currency contracts	Other current assets	1		Accrued liabilities	1
Total derivatives not designated as hedging instruments		1			1
Total derivatives		$	111		$	65