Supplemental Guarantor Information Cash Flows (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 26, 2011
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net Cash Provided by (Used in) Operating Activities	$ 50.4	$ 45.0
Cash flows from investing activities:
Additions to properties	(33.8)	(34.3)
Proceeds from sales of properties and intangible assets, net	0.8	1.2
Payments to Acquire Businesses, Net of Cash Acquired	0	(29.4)
Investment in MillerCoors	(236.0)	(277.2)
Proceeds from settlements of derivative instruments	0	15.4
Investment in and advances to an unconsolidated affiliate	(4.6)	0
Trade loan repayments from customers	3.8	3.7
Trade loans advanced to customers	(2.4)	(2.6)
Payments for (Proceeds from) Other Investing Activities	0	(1.1)
Net cash used in investing activities	(258.2)	(144.6)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	19.7	4.3
Excess tax benefits from share-based compensation	3.3	0.8
Dividends paid	(57.8)	(52.1)
Dividends paid to noncontrolling interests holders	(1.7)	0
Debt issuance costs	0.1	0
Net (payments) proceeds from revolving credit facilities	1.5	0.4
Net cash used in financing activities	(45.9)	(50.1)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(253.7)	(149.7)
Effect of foreign exchange rate changes on cash and cash equivalents	11.1	13.8
Balance at beginning of year	1,078.9	1,217.6
Balance at end of period	836.3	1,081.7
Parent Company [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net Cash Provided by (Used in) Operating Activities	155.3	(22.6)
Cash flows from investing activities:
Additions to properties	(1.1)	(0.9)
Investment in and advances to an unconsolidated affiliate		15.4
Net intercompany investing activity	(39.9)	0.2
Net cash used in investing activities	(41.0)	14.7
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	19.7	4.3
Excess tax benefits from share-based compensation	3.3	0.8
Dividends paid	(57.8)	(46.2)
Net intercompany financing activity		9.3
Net cash used in financing activities	(34.8)	(31.8)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	79.5	(39.7)
Effect of foreign exchange rate changes on cash and cash equivalents		0
Balance at beginning of year	601.1	832.0
Balance at end of period	680.6	792.3
Issuer 2002 [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net Cash Provided by (Used in) Operating Activities	180.9	(5.2)
Cash flows from investing activities:
Proceeds from settlements of derivative instruments	(110.6)
Net intercompany investing activity	(110.1)	(1.8)
Net cash used in investing activities	(220.7)	(1.8)
Cash flows from financing activities:
Net intercompany financing activity	39.8	0
Net cash used in financing activities	39.8	0
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	0	(7.0)
Effect of foreign exchange rate changes on cash and cash equivalents		0
Balance at beginning of year	0	7.0
Balance at end of period	0	0
Subsidiary Guarantors
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net Cash Provided by (Used in) Operating Activities	(253.9)	32.8
Cash flows from investing activities:
Additions to properties	(19.1)	(19.4)
Investment in MillerCoors	(236.0)	(277.2)
Return of capital from MillerCoors	124.6	177.5
Payments for (Proceeds from) Other Investing Activities		(0.2)
Net intercompany investing activity	126.4	0
Net cash used in investing activities	(4.1)	(118.9)
Cash flows from financing activities:
Dividends paid	(104.0)
Debt issuance costs	0.1
Net intercompany financing activity	100.0	58.5
Net cash used in financing activities	(4.1)	58.5
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(262.1)	(27.6)
Effect of foreign exchange rate changes on cash and cash equivalents	8.4	5.3
Balance at beginning of year	318.0	190.1
Balance at end of period	64.3	167.8
Subsidiary Non-Guarantors
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net Cash Provided by (Used in) Operating Activities	72.1	40.0
Cash flows from investing activities:
Additions to properties	(13.6)	(14.0)
Proceeds from sales of properties and intangible assets, net	0.8	1.2
Payments to Acquire Businesses, Net of Cash Acquired		(29.4)
Investment in and advances to an unconsolidated affiliate	(4.6)
Trade loan repayments from customers	3.8	3.7
Trade loans advanced to customers	(2.4)	(2.6)
Payments for (Proceeds from) Other Investing Activities		(0.9)
Net intercompany investing activity		44.3
Net cash used in investing activities	(16.0)	4.1
Cash flows from financing activities:
Dividends paid		(5.9)
Dividends paid to noncontrolling interests holders	(1.7)
Proceeds from (Repayments of) Short-term Debt	(10.8)	6.8
Net (payments) proceeds from revolving credit facilities	1.5	0.4
Changes in Short-term Borrowings and Overdraft Balances		(10.3)
Net intercompany financing activity	(116.2)	(110.5)
Net cash used in financing activities	(127.2)	(119.5)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(71.1)	(75.4)
Effect of foreign exchange rate changes on cash and cash equivalents	2.7	8.5
Balance at beginning of year	159.8	188.5
Balance at end of period	91.4	121.6
Eliminations
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net Cash Provided by (Used in) Operating Activities	(104.0)	0
Cash flows from investing activities:
Net intercompany investing activity	23.6	(42.7)
Net cash used in investing activities	23.6	(42.7)
Cash flows from financing activities:
Dividends paid	104.0
Net intercompany financing activity	(23.6)	42.7
Net cash used in financing activities	80.4	42.7
Cash and cash equivalents:
Balance at end of period	0	0
Consolidated [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net Cash Provided by (Used in) Operating Activities	50.4	45.0
Cash flows from investing activities:
Additions to properties	(33.8)	(34.3)
Proceeds from sales of properties and intangible assets, net	0.8	1.2
Payments to Acquire Businesses, Net of Cash Acquired		(29.4)
Investment in MillerCoors	(236.0)	(277.2)
Return of capital from MillerCoors	124.6	177.5
Proceeds from settlements of derivative instruments	(110.6)
Investment in and advances to an unconsolidated affiliate	(4.6)	15.4
Trade loan repayments from customers	3.8	3.7
Trade loans advanced to customers	(2.4)	(2.6)
Payments for (Proceeds from) Other Investing Activities		(1.1)
Net intercompany investing activity		0
Net cash used in investing activities	(258.2)	(144.6)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	19.7
Excess tax benefits from share-based compensation	3.3	4.3
Dividends paid	(57.8)	(0.8)
Dividends paid to noncontrolling interests holders	(1.7)	52.1
Debt issuance costs	0.1
Proceeds from (Repayments of) Short-term Debt	(10.8)	6.8
Net (payments) proceeds from revolving credit facilities	1.5	0.4
Changes in Short-term Borrowings and Overdraft Balances		(10.3)
Net intercompany financing activity		0
Net cash used in financing activities	(45.9)	(50.1)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(253.7)	(149.7)
Effect of foreign exchange rate changes on cash and cash equivalents	11.1	13.8
Balance at beginning of year	1,078.9	1,217.6
Balance at end of period	$ 836.3	$ 1,081.7