Asset Impairment, Exit and Implementation Costs (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended			25 Months Ended
	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Asset impairment, exit costs and implementation costs		$ 407,000,000	$ 216,000,000	$ 453,000,000
Payments for restructuring		47,000,000	147,000,000
Wine Business Strategic Reset [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment, exit costs and implementation costs		$ 411,000,000
Wine Business Strategic Reset [Member] | Inventory Write-Off [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment, exit costs and implementation costs	$ 292,000,000
Wine Business Strategic Reset [Member] | Purchase Commitment [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment, exit costs and implementation costs	$ 100,000,000
Long-term purchase commitment, period		4 years
Wine Business Strategic Reset [Member] | Inventory Disposal Costs and Other [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment, exit costs and implementation costs		$ 19,000,000
Refocus of Innovative Product Efforts [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment, exit costs and implementation costs			9,000,000	272,000,000
Refocus of Innovative Product Efforts [Member] | Asset Impairment and Exit Costs [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment, exit costs and implementation costs				209,000,000
Refocus of Innovative Product Efforts [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment, exit costs and implementation costs				63,000,000
Cost Reduction Program [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment, exit costs and implementation costs			133,000,000	$ 121,000,000
Restructuring and related cost, cost incurred to date		250,000,000			$ 250,000,000
Restructuring reserve, accrual adjustment		(4,000,000)
Payments for restructuring		44,000,000	$ 136,000,000		180,000,000
Cost Reduction Program [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date		52,000,000			52,000,000
Cost Reduction Program [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date		$ 198,000,000			$ 198,000,000