Supplemental Guarantor Information Balance Sheet (Details) (USD $) In Millions, unless otherwise specified	Mar. 30, 2013	Dec. 29, 2012	Mar. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 511.5	$ 624.0	$ 836.3	$ 1,078.9
Accounts receivable, net	572.2	660.5
Other receivables, net	138.0	92.9
Total inventories, net	257.6	213.9
Other assets, net	141.5	117.5
Deferred tax assets	68.9	39.2
Total current assets	1,689.7	1,748.0
Properties, net	1,925.5	1,995.9
Goodwill	2,365.7	2,453.1
Other intangibles, net	7,028.3	7,234.8
Investment in MillerCoors	2,530.4	2,431.8
Deferred tax assets	189.8	125.4
Total assets	15,942.7	16,212.2
Current liabilities :
Accounts payable	455.5	427.0
Derivative hedging instruments	13.5	6.0
Deferred tax liabilities	168.9	152.3
Short-term borrowings and current portion of long-term debt	1,260.4	1,245.6
Discontinued operations	8.0	7.9
Total current liabilities	2,614.8	2,598.7
Long-term debt	3,390.8	3,422.5
Pension and post-retirement benefits	776.6	833.0
Derivative hedging instruments	206.5	222.2
Deferred tax liabilities	966.4	948.5
Discontinued operations	20.3	20.0
Total liabilities	8,145.8	8,220.6
MCBC stockholders' equity	7,771.1	7,966.9
Noncontrolling interests	25.8	24.7
Total equity	7,796.9	7,991.6
Total liabilities and equity	15,942.7	16,212.2
Parent Guarantor, 2007 and 2012 Issuer [Member]
Current assets:
Cash and cash equivalents	107.8	189.8	680.6	601.1
Accounts receivable, net	1.4	1.7
Other receivables, net	69.2	22.7
Total inventories, net	0	0
Other assets, net	8.9	10.7
Deferred tax assets	0	0
Intercompany accounts receivable	0	0
Total current assets	187.3	224.9
Properties, net	24.3	25.1
Goodwill	0	0
Other intangibles, net	0	0
Investment in MillerCoors	0	0
Net investment in and advances to subsidiaries	10,346.2	10,465.2
Deferred tax assets	68.7	47.4
Other assets, net	38.0	38.6
Total assets	10,664.5	10,801.2
Current liabilities :
Accounts payable	7.1	6.9
Accrued expenses and other liabilities	59.1	57.1
Derivative hedging instruments	10.6	0
Deferred tax liabilities	12.4	11.3
Short-term borrowings and current portion of long-term debt	568.8	564.2
Discontinued operations	0	0
Intercompany accounts payable	1,170.9	1,166.3
Total current liabilities	1,828.9	1,805.8
Long-term debt	1,895.7	1,895.6
Pension and post-retirement benefits	3.4	3.3
Derivative hedging instruments	0	0
Deferred tax liabilities	0	0
Other liabilities, net	9.8	6.6
Discontinued operations	0	0
Intercompany notes payables	0	0
Total liabilities	3,737.8	3,711.3
MCBC stockholders' equity	7,771.1	7,966.9
Intercompany notes receivable	(844.4)	(877.0)
Total stockholders' equity	6,926.7	7,089.9
Noncontrolling interests	0	0
Total equity	6,926.7	7,089.9
Total liabilities and equity	10,664.5	10,801.2
Subsidiary Guarantors
Current assets:
Cash and cash equivalents	259.3	249.3	118.9	422.5
Accounts receivable, net	433.2	524.7
Other receivables, net	50.6	54.6
Total inventories, net	207.6	172.5
Other assets, net	83.7	67.1
Deferred tax assets	0	0
Intercompany accounts receivable	1,910.0	2,077.8
Total current assets	2,944.4	3,146.0
Properties, net	1,282.2	1,338.9
Goodwill	1,018.2	1,068.5
Other intangibles, net	4,476.7	4,606.8
Investment in MillerCoors	2,530.4	2,431.8
Net investment in and advances to subsidiaries	2,802.9	2,291.6
Deferred tax assets	151.9	104.8
Other assets, net	122.5	125.0
Total assets	15,329.2	15,113.4
Current liabilities :
Accounts payable	268.5	250.4
Accrued expenses and other liabilities	501.0	537.3
Derivative hedging instruments	2.8	6.0
Deferred tax liabilities	156.9	142.5
Short-term borrowings and current portion of long-term debt	678.3	668.3
Discontinued operations	0	0
Intercompany accounts payable	812.8	1,133.3
Total current liabilities	2,420.3	2,737.8
Long-term debt	1,374.5	1,402.5
Pension and post-retirement benefits	766.7	823.1
Derivative hedging instruments	206.5	222.2
Deferred tax liabilities	0	0
Other liabilities, net	57.3	64.4
Discontinued operations	0	0
Intercompany notes payables	1,067.9	1,135.8
Total liabilities	5,893.2	6,385.8
MCBC stockholders' equity	15,603.8	15,036.7
Intercompany notes receivable	(6,167.8)	(6,309.1)
Total stockholders' equity	9,436.0	8,727.6
Noncontrolling interests	0	0
Total equity	9,436.0	8,727.6
Total liabilities and equity	15,329.2	15,113.4
Subsidiary Non-Guarantors
Current assets:
Cash and cash equivalents	144.4	184.9	36.8	55.3
Accounts receivable, net	137.6	134.1
Other receivables, net	18.2	15.6
Total inventories, net	50.0	41.4
Other assets, net	48.9	39.7
Deferred tax assets	70.4	40.7
Intercompany accounts receivable	804.4	1,137.5
Total current assets	1,273.9	1,593.9
Properties, net	619.0	631.9
Goodwill	1,347.5	1,384.6
Other intangibles, net	2,551.6	2,628.0
Investment in MillerCoors	0	0
Net investment in and advances to subsidiaries	5,929.1	5,291.7
Deferred tax assets	0.8	4.9
Other assets, net	52.8	59.6
Total assets	11,774.7	11,594.6
Current liabilities :
Accounts payable	179.9	169.7
Accrued expenses and other liabilities	148.4	165.5
Derivative hedging instruments	0.1	0
Deferred tax liabilities	1.1	0
Short-term borrowings and current portion of long-term debt	13.3	13.1
Discontinued operations	8.0	7.9
Intercompany accounts payable	730.7	915.7
Total current liabilities	1,081.5	1,271.9
Long-term debt	120.6	124.4
Pension and post-retirement benefits	6.5	6.6
Derivative hedging instruments	0	0
Deferred tax liabilities	998.0	980.2
Other liabilities, net	103.3	104.7
Discontinued operations	20.3	20.0
Intercompany notes payables	6,810.7	6,971.9
Total liabilities	9,140.9	9,479.7
MCBC stockholders' equity	3,474.4	3,011.8
Intercompany notes receivable	(866.4)	(921.6)
Total stockholders' equity	2,608.0	2,090.2
Noncontrolling interests	25.8	24.7
Total equity	2,633.8	2,114.9
Total liabilities and equity	11,774.7	11,594.6
Eliminations
Current assets:
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	0	0
Other receivables, net	0	0
Total inventories, net	0	0
Other assets, net	0	0
Deferred tax assets	(1.5)	(1.5)
Intercompany accounts receivable	(2,714.4)	(3,215.3)
Total current assets	(2,715.9)	(3,216.8)
Properties, net	0	0
Goodwill	0	0
Other intangibles, net	0	0
Investment in MillerCoors	0	0
Net investment in and advances to subsidiaries	(19,078.2)	(18,048.5)
Deferred tax assets	(31.6)	(31.7)
Other assets, net	0	0
Total assets	(21,825.7)	(21,297.0)
Current liabilities :
Accounts payable	0	0
Accrued expenses and other liabilities	0	0
Derivative hedging instruments	0	0
Deferred tax liabilities	(1.5)	(1.5)
Short-term borrowings and current portion of long-term debt	0	0
Discontinued operations	0	0
Intercompany accounts payable	(2,714.4)	(3,215.3)
Total current liabilities	(2,715.9)	(3,216.8)
Long-term debt	0	0
Pension and post-retirement benefits	0	0
Derivative hedging instruments	0	0
Deferred tax liabilities	(31.6)	(31.7)
Other liabilities, net	0	0
Discontinued operations	0	0
Intercompany notes payables	(7,878.6)	(8,107.7)
Total liabilities	(10,626.1)	(11,356.2)
MCBC stockholders' equity	(19,078.2)	(18,048.5)
Intercompany notes receivable	7,878.6	8,107.7
Total stockholders' equity	(11,199.6)	(9,940.8)
Noncontrolling interests	0	0
Total equity	(11,199.6)	(9,940.8)
Total liabilities and equity	(21,825.7)	(21,297.0)
Consolidated [Member]
Current assets:
Cash and cash equivalents	511.5	624.0	836.3	1,078.9
Accounts receivable, net	572.2	660.5
Other receivables, net	138.0	92.9
Total inventories, net	257.6	213.9
Other assets, net	141.5	117.5
Deferred tax assets	68.9	39.2
Intercompany accounts receivable	0	0
Total current assets	1,689.7	1,748.0
Properties, net	1,925.5	1,995.9
Goodwill	2,365.7	2,453.1
Other intangibles, net	7,028.3	7,234.8
Investment in MillerCoors	2,530.4	2,431.8
Net investment in and advances to subsidiaries	0	0
Deferred tax assets	189.8	125.4
Other assets, net	213.3	223.2
Total assets	15,942.7	16,212.2
Current liabilities :
Accounts payable	455.5	427.0
Accrued expenses and other liabilities	708.5	759.9
Derivative hedging instruments	13.5	6.0
Deferred tax liabilities	168.9	152.3
Short-term borrowings and current portion of long-term debt	1,260.4	1,245.6
Discontinued operations	8.0	7.9
Intercompany accounts payable	0	0
Total current liabilities	2,614.8	2,598.7
Long-term debt	3,390.8	3,422.5
Pension and post-retirement benefits	776.6	833.0
Derivative hedging instruments	206.5	222.2
Deferred tax liabilities	966.4	948.5
Other liabilities, net	170.4	175.7
Discontinued operations	20.3	20.0
Intercompany notes payables	0	0
Total liabilities	8,145.8	8,220.6
MCBC stockholders' equity	7,771.1	7,966.9
Intercompany notes receivable	0	0
Total stockholders' equity	7,771.1	7,966.9
Noncontrolling interests	25.8	24.7
Total equity	7,796.9	7,991.6
Total liabilities and equity	$ 15,942.7	$ 16,212.2