Other Comprehensive Earnings/Losses (Reclassifications) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings (loss) before income taxes	$ (1,945)		$ (1,964)		$ (3,751)		$ (4,111)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings (loss) before income taxes	39		80		83		157
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Loss	47	[1]	86	[1]	96	[1]	173	[1]
Prior service cost/credit	(8)	[1]	(9)	[1]	(16)	[1]	(17)	[1]
Earnings (loss) before income taxes	39	[1]	77	[1]	80	[1]	156	[1]
SABMiller Plc [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings (loss) before income taxes	$ 0	[2]	$ 3	[2]	$ 3	[2]	$ 1	[2]

[1] Amounts are included in net defined benefit plan costs. For further details, see Note 3. Benefit Plans.

[2] Amounts are included in earnings from equity investment in SABMiller.