Goodwill (Details) - USD ($) $ in Millions		9 Months Ended
	Oct. 11, 2016	Sep. 30, 2016	Nov. 11, 2015
Goodwill activity:
Balance at beginning of year		$ 1,983.3
Goodwill, Purchase Accounting Adjustments		(0.6)
Goodwill, Impairment Loss		(15.7)
Foreign currency translation		(41.8)
Balance at end of year		1,925.2
MillerCoors
Goodwill activity:
Business Acquisition, Percentage of Economic Interests Acquired			58.00%
Canada [Member]
Goodwill activity:
Balance at beginning of year		551.4
Business acquisition and disposition		0.0
Goodwill, Impairment Loss		0.0
Foreign currency translation		29.8
Balance at end of year		581.2
Europe [Member]
Goodwill activity:
Balance at beginning of year		1,408.7
Goodwill, Written off Related to Sale of Business Unit		0.0
Goodwill, Impairment Loss		0.0
Foreign currency translation		(71.3)
Balance at end of year		1,337.4
MCI [Member]
Goodwill activity:
Balance at beginning of year		23.2
Goodwill, Purchase Accounting Adjustments		(0.6)
Goodwill, Impairment Loss		(15.7)
Foreign currency translation		(0.3)
Balance at end of year		$ 6.6
Subsequent Event [Member] | MillerCoors
Goodwill activity:
Business acquisition and disposition	$ 5,900.0
Balance at end of year	$ 5,931.3
Business Acquisition, Percentage of Economic Interests Acquired	58.00%
Subsequent Event [Member] | Miller Brand Portfolio [Member]
Goodwill activity:
Business acquisition and disposition	$ 700.0