Equity (Textuals) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Stockholders' Equity (Textuals) [Abstract]
Par value preferred stock assumed in connection with the 1998 restructuring of Astra Merck Inc	$ 2,400,000,000		$ 2,400,000,000
Preferred stock assumed with Astra Merck Inc., dividend rate per annum			5% per annum
Comprehensive income (loss)	2,400,000,000	(335,000,000)	3,500,000,000	(841,000,000)
Cumulative translation gains (losses) relating to translation impact of intangible assets			340,000,000	(2,100,000,000)
Designated as, and are effective as, economic hedges of the net investment in a foreign operation [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Cumulative translation pretax gains (losses) from euro denominated notes	$ (178,000,000)	$ 462,000,000	$ (178,000,000)	$ 462,000,000