Other Income, Net (Schedule of Other Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Component of Other Income, Nonoperating [Line Items]
Net exchange gains (losses)	$ 11		$ (81)
Total	92		14
Other Income [Member]
Component of Other Income, Nonoperating [Line Items]
Cozaar/Hyzaar income	2		25
Royalty income	37		40
Interest income	27		23
Equity in earnings affiliates, Excluding Exchange Gains / Losses	(7)		10
Net gains on sales of other assets	5		5
Net exchange gains (losses)	11	[1]	(81)	[1]
Miscellaneous income and expenses, net	17	[2]	(8)	[2]
Total	92		14
ForeignCurrencyLossDuetoDevaluation [Member]
Component of Other Income, Nonoperating [Line Items]
Net exchange gains (losses)	$ 36

[1] The company routinely uses foreign currency exchange contracts to offset its net exposures, by currency, related to the foreign currency-denominated monetary assets and liabilities. The objective of this program is to maintain an approximately balanced position in foreign currencies in order to minimize, on an after-tax basis, the effects of exchange rate changes on net monetary asset positions. The net pre-tax exchange gains and losses are recorded in other income, net and the related tax impact is recorded in provision for income taxes on continuing operations on the interim Consolidated Income Statements. The $11 net exchange gain for the three months ended March 31, 2013 includes a $36 exchange loss associated with the devaluation of the Venezuelan bolivar.

[2] Miscellaneous income and expenses, net, generally includes interest items, insurance recoveries, litigation settlements and other items.