Other Comprehensive Earnings/Losses (Reclassifications) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net periodic benefit (income) cost, excluding service cost									$ (34)	$ 37	$ (1)
Earnings from equity investment in AB InBev									(890)	(532)	(795)
Pre-tax amounts reclassified from accumulated other comprehensive losses to net earnings	$ (1,251)	$ (1,944)	$ (1,877)	$ (1,895)	$ (4,968)	$ (1,867)	$ (1,990)	$ (1,402)	(6,967)	(10,227)	(14,244)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings from equity investment in AB InBev									(64)	8	1,160
Pre-tax amounts reclassified from accumulated other comprehensive losses to net earnings									177	299	1,338
Reclassification out of Accumulated Other Comprehensive Income [Member] | Net loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net periodic benefit (income) cost, excluding service cost									276	325	223
Reclassification out of Accumulated Other Comprehensive Income [Member] | Prior service costs/credit [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net periodic benefit (income) cost, excluding service cost									(35)	(34)	(45)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Benefit Plans [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net periodic benefit (income) cost, excluding service cost									$ 241	$ 291	$ 178