Debt Acquisition and Other (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended
	Oct. 11, 2016	Mar. 31, 2017	Mar. 31, 2016	Apr. 18, 2017
Line of Credit Facility [Line Items]
Revolving credit facility, maximum borrowing capacity		$ 750.0
EUR 2017 Notes USD Equivalent [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.35%
Debt Instrument, Description of Variable Rate Basis	EURIBOR
Interest Expense [Member] | MillerCoors Acquisition Term Loan [Member]
Line of Credit Facility [Line Items]
Other Financing Costs and Amortization of Financing Costs			$ 1.8
Three Year Tranche [Member] | MillerCoors Acquisition Term Loan [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Annual Principal Payment		800.0
Five Year Tranche [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Annual Principal Payment				$ 50.0
Five Year Tranche [Member] | MillerCoors Acquisition Term Loan [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Annual Principal Payment		$ 700.0
MillerCoors | Revolving Multicurrency Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Leverage Ratio Following Acquisition		5.75x
Leverage Ratio In Fourth Year Following Acquisition		3.75x
Lenders Party Thereto and Citibank | MillerCoors | Interest Expense [Member] | MillerCoors Acquisition Term Loan [Member]
Line of Credit Facility [Line Items]
Other Financing Costs and Amortization of Financing Costs		$ 4.0
Lenders Party Thereto and Citibank | MillerCoors | Three Year Tranche [Member] | Three Year Tranche [Member] | MillerCoors Acquisition Term Loan [Member]
Line of Credit Facility [Line Items]
Debt instrument, term		3 years
Lenders Party Thereto and Citibank | MillerCoors | Five Year Tranche [Member] | Five Year Tranche [Member] | MillerCoors Acquisition Term Loan [Member]
Line of Credit Facility [Line Items]
Debt instrument, term		5 years