CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY AND NONCONTROLLING INTERESTS (USD $) In Millions, unless otherwise specified	Total	Common stock issued, Class A	Common stock issued, Class B	Exchangeable shares issued, Class A	Exchangeable shares issued, Class B	Total	Retained earnings	Accumulated other comprehensive income (loss)	Common stock held in treasury, Class B	Paid-in capital	Noncontrolling interest
Balance at Dec. 31, 2011		$ 0	$ 1.6	$ 110.5	$ 724.8	$ 7,656.5	$ 3,656.0	$ (129.7)	$ (321.1)	$ 3,572.1	$ 42.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchange of shares				(0.3)	(0.4)	0				0.7
Shares issued under equity compensation plan						36.9				36.9
Amortization of stock based compensation						12.5				12.5
Acquisition of a business						40.6					40.6
Purchase of noncontrolling interest						(27.9)				1.4	(29.3)
Deconsolidation of MC Si'hai						(20.0)					(20.0)
Net income (loss) including noncontrolling interests	439.1					439.1	443.0				(3.9)
Other comprehensive income (loss), net of tax	155.3					155.3		155.3
Reclassification and tax adjustments related to investment in MillerCoors						(97.9)		(97.9)
Dividends declared and paid						(237.2)	(232.2)				(5.0)
Balance at Dec. 29, 2012		0	1.6	110.2	724.4	7,957.9	3,866.8	(72.3)	(321.1)	3,623.6	24.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchange of shares				(1.7)	(10.3)	0				12.0
Shares issued under equity compensation plan			0.1			94.6				94.5
Amortization of stock based compensation						17.3				17.3
Purchase of noncontrolling interest						(0.7)				0.2	(0.9)
Proceeds from call options related to settlement of convertible notes						2.6				2.6
Premium payment on settlement of convertible notes						(2.6)				(2.6)
Net income (loss) including noncontrolling interests	572.5					572.5	567.3				5.2
Other comprehensive income (loss), net of tax	192.9					192.9		192.9
Reclassification and tax adjustments related to investment in MillerCoors						34.3		34.3
Dividends declared and paid						(238.7)	(234.6)				(4.1)
Balance at Dec. 31, 2013	8,630.1	0	1.7	108.5	714.1	8,630.1	4,199.5	154.9	(321.1)	3,747.6	24.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchange of shares				0	(52.6)	0				52.6
Shares issued under equity compensation plan			0			47.9				47.9
Amortization of stock based compensation						21.7				21.7
Purchase of noncontrolling interest						(0.4)				1.4	(1.8)
Net income (loss) including noncontrolling interests	517.8					517.8	514.0				3.8
Other comprehensive income (loss), net of tax	(1,053.3)					(1,053.3)		(1,053.3)
Dividends declared and paid						(277.7)	(273.6)				(4.1)
Balance at Dec. 31, 2014	$ 7,886.1	$ 0	$ 1.7	$ 108.5	$ 661.5	$ 7,886.1	$ 4,439.9	$ (898.4)	$ (321.1)	$ 3,871.2	$ 22.8