Supplemental Guarantor Information Balance Sheet (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 25, 2011	Dec. 25, 2010
Current assets:
Cash and cash equivalents	$ 516.0	$ 1,078.9	$ 1,184.2	$ 1,217.6
Accounts receivable, net	739.9	588.8
Other receivables, net	136.2	137.2
Total inventories, net	268.7	207.2
Other assets, net	140.4	94.0
Deferred tax assets	32.4	11.6
Discontinued operations	0	0.3
Total current assets	1,833.6	2,118.0
Properties, net	1,977.7	1,430.1
Goodwill	2,288.0	1,453.3
Other intangibles, net	7,125.3	4,586.0
Investment in MillerCoors	2,605.8	2,487.9
Deferred tax assets	154.4	149.9
Total assets	16,236.7	12,423.8
Current liabilities :
Accounts payable	492.0	301.2
Derivative hedging instruments	6.4	107.6
Deferred tax liabilities	171.5	161.3
Short-term borrowings and current portion of long-term debt	802.5	46.9
Discontinued operations	14.3	13.4
Total current liabilities	2,286.1	1,277.2
Long-term debt	4,097.9	1,914.9
Pension and post-retirement benefits	209.8	212.5
Derivative hedging instruments	687.2	697.5
Deferred tax liabilities	883.8	455.6
Discontinued operations	20.4	22.0
Total liabilities	8,354.8	4,733.6
MCBC stockholders' equity	7,810.8	7,647.9
Noncontrolling interests	71.1	42.3
Total equity	7,881.9	7,690.2
Total liabilities and equity	16,236.7	12,423.8
Parent Guarantor, 2007 and 2012 Issuer [Member]
Current assets:
Cash and cash equivalents	80.8	601.1	879.1	832.0
Accounts receivable, net	2.0	0.9
Other receivables, net	48.8	46.9
Total inventories, net	0	0
Other assets, net	12.5	9.7
Deferred tax assets	0	0
Discontinued operations		0
Intercompany accounts receivable	0	0
Total current assets	144.1	658.6
Properties, net	28.3	27.6
Goodwill	0	0
Other intangibles, net	0	0
Investment in MillerCoors	0	0
Net investment in and advances to subsidiaries	11,072.1	7,925.2
Deferred tax assets	32.6	33.1
Other assets, net	42.4	19.8
Total assets	11,319.5	8,664.3
Current liabilities :
Accounts payable	11.0	7.3
Accrued expenses and other liabilities	67.3	34.6
Derivative hedging instruments	0	0
Deferred tax liabilities	6.6	6.2
Short-term borrowings and current portion of long-term debt	15.0	0
Discontinued operations	0	0
Intercompany accounts payable	813.6	413.8
Total current liabilities	913.5	461.9
Long-term debt	2,585.5	546.2
Pension and post-retirement benefits	0	0
Derivative hedging instruments	0	0
Deferred tax liabilities	0	0
Other liabilities, net	9.7	8.3
Discontinued operations	0	0
Intercompany notes payables	0	0
Total liabilities	3,508.7	1,016.4
MCBC stockholders' equity	8,654.3	8,267.8
Intercompany notes receivable	843.5	619.9
Total stockholders' equity	7,810.8	7,647.9
Noncontrolling interests	0	0
Total equity	7,810.8	7,647.9
Total liabilities and equity	11,319.5	8,664.3
Subsidiary Guarantors
Current assets:
Cash and cash equivalents	186.3	422.5	266.1	349.5
Accounts receivable, net	526.3	550.8
Other receivables, net	73.3	84.0
Total inventories, net	207.2	193.0
Other assets, net	84.7	74.2
Deferred tax assets	0	0
Discontinued operations		0
Intercompany accounts receivable	1,488.8	1,522.0
Total current assets	2,566.6	2,846.5
Properties, net	1,298.9	1,314.0
Goodwill	1,041.9	1,033.0
Other intangibles, net	4,531.6	4,525.3
Investment in MillerCoors	2,605.8	2,487.9
Net investment in and advances to subsidiaries	2,307.7	1,056.3
Deferred tax assets	147.0	149.2
Other assets, net	153.0	155.6
Total assets	14,652.5	13,567.8
Current liabilities :
Accounts payable	240.2	256.1
Accrued expenses and other liabilities	554.5	579.9
Derivative hedging instruments	6.4	107.6
Deferred tax liabilities	165.4	155.6
Short-term borrowings and current portion of long-term debt	653.0	44.7
Discontinued operations	0	0
Intercompany accounts payable	846.3	1,646.6
Total current liabilities	2,465.8	2,790.5
Long-term debt	1,375.3	1,368.7
Pension and post-retirement benefits	209.8	693.6
Derivative hedging instruments	681.3	212.5
Deferred tax liabilities	0	0
Other liabilities, net	48.7	53.0
Discontinued operations	0	0
Intercompany notes payables	1,103.7	1,504.0
Total liabilities	5,884.6	6,622.3
MCBC stockholders' equity	14,845.4	11,917.0
Intercompany notes receivable	6,077.5	4,971.5
Total stockholders' equity	8,767.9	6,945.5
Noncontrolling interests	0	0
Total equity	8,767.9	6,945.5
Total liabilities and equity	14,652.5	13,567.8
Subsidiary Non-Guarantors
Current assets:
Cash and cash equivalents	248.9	55.3	39.0	36.1
Accounts receivable, net	211.6	37.1
Other receivables, net	14.3	6.3
Total inventories, net	61.5	14.2
Other assets, net	43.2	10.1
Deferred tax assets	32.9	12.1
Discontinued operations		0.3
Intercompany accounts receivable	848.0	1,612.9
Total current assets	1,460.4	1,748.3
Properties, net	650.5	88.5
Goodwill	1,246.1	420.3
Other intangibles, net	2,593.7	60.7
Investment in MillerCoors	0	0
Net investment in and advances to subsidiaries	5,576.6	5,363.3
Deferred tax assets	9.2	2.3
Other assets, net	56.5	23.2
Total assets	11,593.0	7,706.6
Current liabilities :
Accounts payable	240.8	37.8
Accrued expenses and other liabilities	177.8	32.3
Derivative hedging instruments	0	0
Deferred tax liabilities	0	0
Short-term borrowings and current portion of long-term debt	134.5	2.2
Discontinued operations	14.3	13.4
Intercompany accounts payable	676.9	1,074.5
Total current liabilities	1,244.3	1,160.2
Long-term debt	137.1	0
Pension and post-retirement benefits	0	3.9
Derivative hedging instruments	5.9	0
Deferred tax liabilities	918.2	490.3
Other liabilities, net	111.2	92.6
Discontinued operations	20.4	22.0
Intercompany notes payables	6,712.7	4,971.6
Total liabilities	9,149.8	6,740.6
MCBC stockholders' equity	3,267.5	1,807.9
Intercompany notes receivable	895.4	884.2
Total stockholders' equity	2,372.1	923.7
Noncontrolling interests	71.1	42.3
Total equity	2,443.2	966.0
Total liabilities and equity	11,593.0	7,706.6
Eliminations
Current assets:
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	0	0
Other receivables, net	(0.2)	0
Total inventories, net	0	0
Other assets, net	0	0
Deferred tax assets	(0.5)	(0.5)
Discontinued operations		0
Intercompany accounts receivable	(2,336.8)	(3,134.9)
Total current assets	(2,337.5)	(3,135.4)
Properties, net	0	0
Goodwill	0	0
Other intangibles, net	0	0
Investment in MillerCoors	0	0
Net investment in and advances to subsidiaries	(18,956.4)	(14,344.8)
Deferred tax assets	(34.4)	(34.7)
Other assets, net	0	0
Total assets	(21,328.3)	(17,514.9)
Current liabilities :
Accounts payable	0	0
Accrued expenses and other liabilities	(0.2)	0
Derivative hedging instruments	0	0
Deferred tax liabilities	(0.5)	(0.5)
Short-term borrowings and current portion of long-term debt	0	0
Discontinued operations	0	0
Intercompany accounts payable	(2,336.8)	(3,134.9)
Total current liabilities	(2,337.5)	(3,135.4)
Long-term debt	0	0
Pension and post-retirement benefits	0	0
Derivative hedging instruments	0	0
Deferred tax liabilities	(34.4)	(34.7)
Other liabilities, net	0	0
Discontinued operations	0	0
Intercompany notes payables	(7,816.4)	(6,475.6)
Total liabilities	(10,188.3)	(9,645.7)
MCBC stockholders' equity	(18,956.4)	(14,344.8)
Intercompany notes receivable	(7,816.4)	(6,475.6)
Total stockholders' equity	(11,140.0)	(7,869.2)
Noncontrolling interests	0	0
Total equity	(11,140.0)	(7,869.2)
Total liabilities and equity	(21,328.3)	(17,514.9)
Consolidated [Member]
Current assets:
Cash and cash equivalents	516.0	1,078.9	1,184.2	1,217.6
Accounts receivable, net	739.9	588.8
Other receivables, net	136.2	137.2
Total inventories, net	268.7	207.2
Other assets, net	140.4	94.0
Deferred tax assets	32.4	11.6
Discontinued operations		0.3
Intercompany accounts receivable	0	0
Total current assets	1,833.6	2,118.0
Properties, net	1,977.7	1,430.1
Goodwill	2,288.0	1,453.3
Other intangibles, net	7,125.3	4,586.0
Investment in MillerCoors	2,605.8	2,487.9
Net investment in and advances to subsidiaries	0	0
Deferred tax assets	154.4	149.9
Other assets, net	251.9	198.6
Total assets	16,236.7	12,423.8
Current liabilities :
Accounts payable	492.0	301.2
Accrued expenses and other liabilities	799.4	646.8
Derivative hedging instruments	6.4	107.6
Deferred tax liabilities	171.5	161.3
Short-term borrowings and current portion of long-term debt	802.5	46.9
Discontinued operations	14.3	13.4
Intercompany accounts payable	0	0
Total current liabilities	2,286.1	1,277.2
Long-term debt	4,097.9	1,914.9
Pension and post-retirement benefits	209.8	697.5
Derivative hedging instruments	687.2	212.5
Deferred tax liabilities	883.8	455.6
Other liabilities, net	169.6	153.9
Discontinued operations	20.4	22.0
Intercompany notes payables	0	0
Total liabilities	8,354.8	4,733.6
MCBC stockholders' equity	7,810.8	7,647.9
Intercompany notes receivable	0	0
Total stockholders' equity	7,810.8	7,647.9
Noncontrolling interests	71.1	42.3
Total equity	7,881.9	7,690.2
Total liabilities and equity	$ 16,236.7	$ 12,423.8