Acquisition and Investments Financials (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2017	Dec. 31, 2016	Oct. 10, 2016	Dec. 31, 2015
Equity Method Investment, Summarized Financial Information, Liabilities and Equity [Abstract]
Total equity	$ 9,940.4	$ 9,940.4	$ 12,696.6	$ 11,621.7		$ 7,063.1
MillerCoors
Equity Method Investment, Summarized Financial Information, Liabilities and Equity [Abstract]
MCBC economic interest	42.00%	42.00%			42.00%
Results of operations
Net sales	$ 2,007.7	$ 5,950.5
Cost of goods sold	(1,150.8)	(3,358.3)
Gross profit	856.9	2,592.2
Operating income	373.4	1,145.6
Net income attributable to MillerCoors	369.2	1,134.0
Accelerated depreciation expense	$ 34.3	$ 103.2
MillerCoors
Results of operations
Business Acquisition, Percentage of Voting Interests Acquired					50.00%