Debt Schedule (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016	May 03, 2012
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 11,400.7	$ 9,842.2
Less: unamortized debt discounts	(84.5)	(85.0)
Current portion of long-term debt	(675.3)	(671.7)
Total long-term debt	11,443.1	11,387.7
Commercial Paper	130.0	0.0
Overdraft facility	26.5	2.6
Short-term facilities	8.6	7.0
Other short-term borrowings	2.6	3.5
Current portion of long-term debt and short-term borrowings	843.0	684.8
Credit facilities [Member] | Japanese Yen [Member]
Debt Instrument [Line Items]
Short-term facilities	8.6	7.0
MillerCoors Acquisition Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt, carrying amount	800.0	2,300.0
Other Long-Term Debt [Member]
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 2.2	$ 2.2
Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 1,900.0