Investment In SABMiller (Summary Of Income Statement Of SABMiller) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Earnings (Losses) of Noncontrolling Interest and Equity Method Investments [Abstract]
Net revenues	$ 23,449	$ 20,780	$ 18,981
Operating profit	5,243	3,603	2,821
Net earnings	$ 4,362	$ 2,596	$ 2,133