Supplemental Guarantor Information Income statement (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 26, 2011
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Sales	$ 1,008.1	$ 997.3
Excise taxes	(316.7)	(306.9)
Net sales	691.4	690.4
Cost of goods sold	(438.8)	(427.2)
Gross profit	252.6	263.2
Marketing, general and administrative expenses	(248.2)	(238.4)
Special items, net	(1.5)	0
Equity income in MillerCoors	118.9	101.2
Operating income (loss)	121.8	126.0
Interest income (expense), net	(23.8)	(26.8)
Other income (expense), net	(1.4)	(0.7)
Income (loss) from continuing operations before income taxes	96.6	98.5
Income tax benefit (expense)	(17.3)	(16.1)
Net Income (loss) from continuing operations	79.3	82.4
Income (loss) from discontinued operations, net of tax	0.1	0.3
Net income (loss) including noncontrolling interests	79.4	82.7
Less: Net (income) loss attributable to noncontrolling interests	0.1	0.2
Net income (loss) attributable to MCBC	79.5	82.9
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	190.6	253.4
Parent Company [Member]
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Sales	5.5	5.8
Net sales	5.5	5.8
Gross profit	5.5	5.8
Marketing, general and administrative expenses	(34.5)	(32.7)
Special items, net	(1.1)
Equity income (loss) in subsidiaries	85.0	185.9
Operating income (loss)	54.9	159.0
Interest income (expense), net		(8.4)
Other income (expense), net	12.0	1.4
Income (loss) from continuing operations before income taxes	66.9	152.0
Income tax benefit (expense)	12.6	(69.1)
Net Income (loss) from continuing operations	79.5	82.9
Net income (loss) including noncontrolling interests	79.5	82.9
Net income (loss) attributable to MCBC	79.5	82.9
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	56.1	113.1
Issuer 2002 [Member]
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Sales	43.3	43.2
Net sales	43.3	43.2
Cost of goods sold	(7.5)	(10.9)
Gross profit	35.8	32.3
Marketing, general and administrative expenses	(9.1)	(7.6)
Equity income (loss) in subsidiaries	23.9	1.6
Operating income (loss)	50.6	26.3
Interest income (expense), net	(9.2)	11.9
Other income (expense), net	(12.2)	(1.2)
Income (loss) from continuing operations before income taxes	29.2	37.0
Income tax benefit (expense)	(31.9)	47.8
Net Income (loss) from continuing operations	(2.7)	84.8
Net income (loss) including noncontrolling interests	(2.7)	84.8
Net income (loss) attributable to MCBC	(2.7)	84.8
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(16.2)	81.6
Subsidiary Guarantors
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Sales	519.2	511.8
Excise taxes	(123.2)	(123.6)
Net sales	396.0	388.2
Cost of goods sold	(240.9)	(224.5)
Gross profit	155.1	163.7
Marketing, general and administrative expenses	(112.2)	(110.6)
Special items, net	(2.1)	(2.1)
Equity income (loss) in subsidiaries	(139.1)	(148.8)
Equity income in MillerCoors	118.9	101.2
Operating income (loss)	20.6	3.4
Interest income (expense), net	97.5	80.3
Other income (expense), net	0	(0.1)
Income (loss) from continuing operations before income taxes	118.1	83.6
Income tax benefit (expense)	(1.5)	7.6
Net Income (loss) from continuing operations	116.6	91.2
Net income (loss) including noncontrolling interests	116.6	91.2
Net income (loss) attributable to MCBC	116.6	91.2
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	316.8	286.5
Subsidiary Non-Guarantors
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Sales	489.2	484.3
Excise taxes	(193.5)	(183.3)
Net sales	295.7	301.0
Cost of goods sold	(231.8)	(233.6)
Gross profit	63.9	67.4
Marketing, general and administrative expenses	(100.1)	(93.5)
Special items, net	1.7	2.1
Equity income (loss) in subsidiaries	52.6	54.5
Operating income (loss)	18.1	30.5
Interest income (expense), net	(112.1)	(110.6)
Other income (expense), net	(1.2)	(0.8)
Income (loss) from continuing operations before income taxes	(95.2)	(80.9)
Income tax benefit (expense)	3.5	(2.4)
Net Income (loss) from continuing operations	(91.7)	(83.3)
Income (loss) from discontinued operations, net of tax	0.1	0.3
Net income (loss) including noncontrolling interests	(91.6)	(83.0)
Less: Net (income) loss attributable to noncontrolling interests	0.1	0.2
Net income (loss) attributable to MCBC	(91.5)	(82.8)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(143.7)	(134.6)
Eliminations
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Sales	(49.1)	(47.8)
Net sales	(49.1)	(47.8)
Cost of goods sold	41.4	41.8
Gross profit	(7.7)	(6.0)
Marketing, general and administrative expenses	7.7	6.0
Equity income (loss) in subsidiaries	(22.4)	(93.2)
Operating income (loss)	(22.4)	(93.2)
Income (loss) from continuing operations before income taxes	(22.4)	(93.2)
Net Income (loss) from continuing operations	(22.4)	(93.2)
Net income (loss) including noncontrolling interests	(22.4)	(93.2)
Net income (loss) attributable to MCBC	(22.4)	(93.2)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(22.4)	(93.2)
Consolidated [Member]
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Sales	1,008.1	997.3
Excise taxes	(316.7)	(306.9)
Net sales	691.4	690.4
Cost of goods sold	(438.8)	(427.2)
Gross profit	252.6	263.2
Marketing, general and administrative expenses	(248.2)	(238.4)
Special items, net	(1.5)	0
Equity income in MillerCoors	118.9	101.2
Operating income (loss)	121.8	126.0
Interest income (expense), net	(23.8)	(26.8)
Other income (expense), net	(1.4)	(0.7)
Income (loss) from continuing operations before income taxes	96.6	98.5
Income tax benefit (expense)	(17.3)	(16.1)
Net Income (loss) from continuing operations	79.3	82.4
Income (loss) from discontinued operations, net of tax	0.1	0.3
Net income (loss) including noncontrolling interests	79.4	82.7
Less: Net (income) loss attributable to noncontrolling interests	0.1	0.2
Net income (loss) attributable to MCBC	79.5	82.9
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 190.6	$ 253.4