Other Income, Net (Schedule of Other Income) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Other Income and Expenses [Abstract]
Cozaar/Hyzaar income	$ 54		$ 282		$ 483
Royalty income	177		189		140
Interest income	109		110		92
Equity in earnings of affiliates, excluding exchange gains/losses	99	[1]	191	[1]	179	[1]
Gain on sale of equity method investment	122		0		0
Net gains on sales of assets	130		89		121
Net exchange losses	(215)	[1]	(146)	[1]	(11)	[1]
Miscellaneous income and expenses, net	22	[2]	27	[2]	195	[2]
Total	498		742		1,199
Exchange gains (losses) related to earnings of affiliates	$ 3		$ 1		$ (2)

[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 Consolidated Income Statements. Exchange gains (losses) related to earnings of affiliates was $3, $1 and $(2) for 2012, 2011 and 2010, respectively.

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