Other Comprehensive Earnings/Losses (Changes In Each Component Of Accumulated Other Comprehensive Losses) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Other Comprehensive Earnings Losses By Component [Line Items]
Balances at beginning of period	$ (2,068)	$ (1,685)	$ (2,040)	$ (1,887)	$ (1,887)
Other Comprehensive Income Loss Before reclassifications Before tax	(477)	(36)	(590)	237
Deferred Income Taxes	166	13	203	(83)
Other Comprehensive Income (Loss) Before Reclassifications, Net of Tax	(311)	(23)	(387)	154
Amounts reclassified to earnings	80	57	157	98
Deferred income taxes	(31)	(23)	(60)	(39)
Amounts reclassified to net earnings, net of deferred income taxes	49	34	97	59
Other comprehensive earnings, net of deferred income taxes	(262)	11	(290)	213	(153)
Balances at end of Period	(2,330)	(1,674)	(2,330)	(1,674)	(2,040)
Accumulated Translation Adjustment [Member]
Other Comprehensive Earnings Losses By Component [Line Items]
Balances at beginning of period	2	2	2	2	2
Other Comprehensive Income Loss Before reclassifications Before tax	(1)	0	(1)	0
Deferred Income Taxes	0	0	0	0
Other Comprehensive Income (Loss) Before Reclassifications, Net of Tax	(1)	0	(1)	0
Amounts reclassified to earnings	0	0	0	0
Deferred income taxes	0	0	0	0
Amounts reclassified to net earnings, net of deferred income taxes	0	0	0	0
Other comprehensive earnings, net of deferred income taxes	(1)	0	(1)	0
Balances at end of Period	1	2	1	2
Accumulated Defined Benefit Plans Adjustment [Member]
Other Comprehensive Earnings Losses By Component [Line Items]
Balances at beginning of period	(2,348)	(2,040)	(2,414)	(2,062)	(2,062)
Other Comprehensive Income Loss Before reclassifications Before tax	0	0	30	0
Deferred Income Taxes	0	0	(13)	0
Other Comprehensive Income (Loss) Before Reclassifications, Net of Tax	0	0	17	0
Amounts reclassified to earnings	77	65	156	102
Deferred income taxes	(30)	(26)	(60)	(41)
Amounts reclassified to net earnings, net of deferred income taxes	47	39	96	61
Other comprehensive earnings, net of deferred income taxes	47	39	113	61
Balances at end of Period	(2,301)	(2,001)	(2,301)	(2,001)
SABMiller [Member]
Other Comprehensive Earnings Losses By Component [Line Items]
Balances at beginning of period	278	353	372	173	173
Other Comprehensive Income Loss Before reclassifications Before tax	(476)	(36)	(619)	237
Deferred Income Taxes	166	13	216	(83)
Other Comprehensive Income (Loss) Before Reclassifications, Net of Tax	(310)	(23)	(403)	154
Amounts reclassified to earnings	3	(8)	1	(4)
Deferred income taxes	(1)	3	0	2
Amounts reclassified to net earnings, net of deferred income taxes	2	(5)	1	(2)
Other comprehensive earnings, net of deferred income taxes	(308)	(28)	(402)	152
Balances at end of Period	$ (30)	$ 325	$ (30)	$ 325