Asset Impairment, Exit and Implementation Costs (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2		$ 45	$ 394	$ 106
Wine Business Strategic Reset [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2			$ 394
Inventory Write-Off [Member] | Wine Business Strategic Reset [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 292
Purchase Commitment [Member] | Wine Business Strategic Reset [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 100
Fulfillment term				5 years
Inventory Disposal Costs and Other [Member] | Wine Business Strategic Reset [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2
Forecast [Member] | Wine Business Strategic Reset [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						$ 25