Other Comprehensive Earnings/Losses (Reclassifications) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net loss	$ 296	$ 187	$ 340
Prior service cost/credit	(32)	(33)	(35)
Earnings (loss) before income taxes	8,078	7,774	6,942
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings (loss) before income taxes	293	213	317
Reclassification out of Accumulated Other Comprehensive Income [Member] | SABMiller Plc [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings (loss) before income taxes	21	59	6
Accumulated Defined Benefit Plans Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net loss	304	187	346
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Prior service cost/credit	(32)	(33)	(35)
Benefit Plans, net	$ 272	$ 154	$ 311