Investment in SABMiller (Summary of Income Statement of SABMiller) (Details) - SABMiller Plc [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]
Net revenues	$ 20,188	$ 22,380	$ 22,684
Operating profit	3,690	4,478	4,201
Net earnings	$ 2,838	$ 3,532	$ 3,375