Acquisition and Investments Financials (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2017	Dec. 31, 2016	Oct. 10, 2016	Dec. 31, 2015
Equity Method Investment, Summarized Financial Information, Liabilities and Equity [Abstract]
Total equity	$ 9,919.3	$ 11,810.3	$ 11,621.7		$ 7,063.1
MillerCoors
Equity Method Investment, Summarized Financial Information, Liabilities and Equity [Abstract]
MCBC economic interest	42.00%			42.00%
Results of operations
Net sales	$ 1,816.1
Cost of goods sold	(1,033.0)
Gross profit	783.1
Operating income	336.5
Net income attributable to MillerCoors	335.3
Accelerated depreciation expense	35.9
Other Restructuring Costs	$ 1.0
MillerCoors
Results of operations
Business Acquisition, Percentage of Voting Interests Acquired				50.00%