Other Comprehensive Earnings/Losses (Reclassifications) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings (loss) before income taxes		$ 2,254	$ 1,945	$ 3,816	$ 3,751
Accumulated Defined Benefit Plans Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Loss	[1]	74	47	150	96
Prior service cost/credit	[1]	(8)	(8)	(16)	(16)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax	[1]	66	39	134	80
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings (loss) before income taxes		71	39	143	83
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	[2]	$ 5	$ 0	$ 9	$ 3

[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.