Debt Schedule (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016	May 03, 2012
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 11,372.0	$ 9,842.2
Less: unamortized debt discounts	(78.7)	(85.0)
Current portion of long-term debt	(721.1)	(671.7)
Total long-term debt	10,574.2	11,387.7
Commercial Paper	1,004.7	0.0
Overdraft facility	19.2	13.1
Short-term facilities	3.1	7.0
Current portion of long-term debt and short-term borrowings	1,745.0	684.8
MillerCoors Acquisition Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt, carrying amount	0.0	2,300.0
Other Long-Term Debt [Member]
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 2.0	$ 2.2
Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 1,900.0