Debt Pending Acquisition (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended	6 Months Ended
	Dec. 16, 2015	Jun. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Line of Credit Facility [Line Items]
Revolving credit facility, maximum borrowing capacity		$ 750.0	$ 750.0
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
Line of Credit Facility [Line Items]
Bridge Loan	$ 9,300.0
Debt Instrument, Face Amount				$ 3,000.0
Lenders Party Thereto and Citibank | MillerCoors | MillerCoors Acquisition Term Loan [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Face Amount				$ 3,000.0
Lenders Party Thereto and Citibank | MillerCoors | Bridge Loan
Line of Credit Facility [Line Items]
Debt instrument, term	364 days		364 days
Bridge Loan, Maximum Borrowing Capacity	$ 9,300.0
Bridge Loan		6,800.0	$ 6,800.0
Lenders Party Thereto and Citibank | MillerCoors | Three Year Tranche [Member] | MillerCoors Acquisition Term Loan [Member]
Line of Credit Facility [Line Items]
Debt instrument, term			3 years
Debt Instrument, Face Amount		1,500.0	$ 1,500.0
Lenders Party Thereto and Citibank | MillerCoors | Five Year Tranche [Member] | MillerCoors Acquisition Term Loan [Member]
Line of Credit Facility [Line Items]
Debt instrument, term			5 years
Debt Instrument, Face Amount		1,500.0	$ 1,500.0
Other income (expense), net [Member] | Lenders Party Thereto and Citibank | MillerCoors | Bridge Loan
Line of Credit Facility [Line Items]
Other Financing Costs and Amortization of Financing Costs		20.2	38.6
Interest Expense [Member] | Lenders Party Thereto and Citibank | MillerCoors | MillerCoors Acquisition Term Loan [Member]
Line of Credit Facility [Line Items]
Other Financing Costs and Amortization of Financing Costs		$ 1.9	$ 3.7