Other Comprehensive Earnings/Losses (Reclassifications) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings (loss) before income taxes	$ 1,883	$ 1,562
Benefit Plans [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Loss	55	76
Prior service cost/credit	(19)	(8)
Benefits plans, net	36	68
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings (loss) before income taxes	48	72
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	$ 12	$ 4