Supplemental Guarantor Information Cash Flows (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	$ 118.4	$ 50.4
Cash flows from investing activities:
Additions to properties	(68.3)	(33.8)
Proceeds from sales of properties and intangible assets	3.7	0.8
Investment in MillerCoors	(331.8)	(236.0)
Investment in and advances to an unconsolidated affiliate	0	(4.6)
Trade loan repayments from customers	2.6	3.8
Trade loans advanced to customers	(2.5)	(2.4)
Net cash provided by (used in) investing activities	(173.9)	(258.2)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	27.2	19.7
Excess tax benefits from share-based compensation	1.6	3.3
Dividends paid	(58.2)	(57.8)
Dividends paid to noncontrolling interests holders	0	(1.7)
Payments on long-term debt and capital lease obligations	0	(0.1)
Payments on short-term borrowings	(13.8)	(10.8)
Net (payments) proceeds from revolving credit facilities	(1.2)	1.5
Net cash provided by (used in) financing activities	(35.2)	(45.9)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(90.7)	(253.7)
Effect of foreign exchange rate changes on cash and cash equivalents	(21.8)	11.1
Balance at beginning of year	624.0	1,078.9
Balance at end of period	511.5	836.3
Parent Guarantor, 2007 and 2012 Issuer [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	(58.0)	155.3
Cash flows from investing activities:
Additions to properties	(1.6)	(1.1)
Proceeds from sales of properties and intangible assets	0	0
Investment in MillerCoors	0	0
Return of capital from MillerCoors	0	0
Proceeds from (payments on) settlement of derivatives		0
Investment in and advances to an unconsolidated affiliate		0
Trade loan repayments from customers	0	0
Trade loans advanced to customers	0	0
Net intercompany investing activity	0	(39.9)
Net cash provided by (used in) investing activities	(1.6)	(41.0)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	27.2	19.7
Excess tax benefits from share-based compensation	1.6	3.3
Dividends paid	(51.2)	57.8
Dividends paid to noncontrolling interests holders	0	0
Payments on long-term debt and capital lease obligations		0
Proceeds from short-term borrowings	0
Payments on short-term borrowings	0	0
Net (payments) proceeds from revolving credit facilities	0	0
Changes in overdraft balances and other	0
Net intercompany financing activity	0	0
Net cash provided by (used in) financing activities	(22.4)	(34.8)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(82.0)	79.5
Effect of foreign exchange rate changes on cash and cash equivalents	0	0
Balance at beginning of year	189.8	601.1
Balance at end of period	107.8	680.6
Subsidiary Guarantors
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	174.6	(214.6)
Cash flows from investing activities:
Additions to properties	(30.2)	(29.6)
Proceeds from sales of properties and intangible assets	1.2	0.8
Investment in MillerCoors	(331.8)	(236.0)
Return of capital from MillerCoors	222.4	(124.6)
Proceeds from (payments on) settlement of derivatives		(110.6)
Investment in and advances to an unconsolidated affiliate		(2.5)
Trade loan repayments from customers	2.6	3.8
Trade loans advanced to customers	(2.5)	(2.4)
Net intercompany investing activity	(9.4)	116.4
Net cash provided by (used in) investing activities	(147.7)	(135.5)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	0	0
Excess tax benefits from share-based compensation	0	0
Dividends paid	0	1.6
Dividends paid to noncontrolling interests holders	0	1.7
Payments on long-term debt and capital lease obligations		(0.1)
Proceeds from short-term borrowings	0
Payments on short-term borrowings	0	0
Net (payments) proceeds from revolving credit facilities	0	0
Changes in overdraft balances and other	(0.2)
Net intercompany financing activity	0	39.7
Net cash provided by (used in) financing activities	(0.2)	36.3
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	26.7	(313.8)
Effect of foreign exchange rate changes on cash and cash equivalents	(16.7)	10.2
Balance at beginning of year	249.3	422.5
Balance at end of period	259.3	118.9
Subsidiary Non-Guarantors
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	2.5	111.3
Cash flows from investing activities:
Additions to properties	(36.5)	(3.1)
Proceeds from sales of properties and intangible assets	2.5	0
Investment in MillerCoors	0	0
Return of capital from MillerCoors	0	0
Proceeds from (payments on) settlement of derivatives		0
Investment in and advances to an unconsolidated affiliate		(2.1)
Trade loan repayments from customers	0	0
Trade loans advanced to customers	0	0
Net intercompany investing activity	0	0
Net cash provided by (used in) investing activities	(34.0)	(5.2)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	0	0
Excess tax benefits from share-based compensation	0	0
Dividends paid	(7.7)	0
Dividends paid to noncontrolling interests holders	(0.2)	0
Payments on long-term debt and capital lease obligations		0
Proceeds from short-term borrowings	5.9
Payments on short-term borrowings	(13.8)	10.8
Net (payments) proceeds from revolving credit facilities	(1.2)	1.5
Changes in overdraft balances and other	3.7
Net intercompany financing activity	9.4	(116.2)
Net cash provided by (used in) financing activities	(3.9)	(125.5)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(35.4)	(19.4)
Effect of foreign exchange rate changes on cash and cash equivalents	(5.1)	0.9
Balance at beginning of year	184.9	55.3
Balance at end of period	144.4	36.8
Eliminations
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	(0.7)	(1.6)
Cash flows from investing activities:
Additions to properties	0	0
Proceeds from sales of properties and intangible assets	0	0
Investment in MillerCoors	0	0
Return of capital from MillerCoors	0	0
Proceeds from (payments on) settlement of derivatives		0
Investment in and advances to an unconsolidated affiliate		0
Trade loan repayments from customers	0	0
Trade loans advanced to customers	0	0
Net intercompany investing activity	9.4	(76.5)
Net cash provided by (used in) investing activities	9.4	(76.5)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	0	0
Excess tax benefits from share-based compensation	0	0
Dividends paid	0.7	(1.6)
Dividends paid to noncontrolling interests holders	0	0
Payments on long-term debt and capital lease obligations		0
Proceeds from short-term borrowings	0
Payments on short-term borrowings	0	0
Net (payments) proceeds from revolving credit facilities	0	0
Changes in overdraft balances and other	0
Net intercompany financing activity	(9.4)	76.5
Net cash provided by (used in) financing activities	(8.7)	78.1
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	0	0
Effect of foreign exchange rate changes on cash and cash equivalents	0	0
Balance at beginning of year	0	0
Balance at end of period	0	0
Consolidated [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	118.4	50.4
Cash flows from investing activities:
Additions to properties	(68.3)	(33.8)
Proceeds from sales of properties and intangible assets	3.7	0.8
Investment in MillerCoors	(331.8)	(236.0)
Return of capital from MillerCoors	222.4	(124.6)
Proceeds from (payments on) settlement of derivatives		(110.6)
Investment in and advances to an unconsolidated affiliate		(4.6)
Trade loan repayments from customers	2.6	3.8
Trade loans advanced to customers	(2.5)	(2.4)
Net intercompany investing activity	0	0
Net cash provided by (used in) investing activities	(173.9)	(258.2)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	27.2	19.7
Excess tax benefits from share-based compensation	1.6	3.3
Dividends paid	(58.2)	57.8
Dividends paid to noncontrolling interests holders	(0.2)	1.7
Payments on long-term debt and capital lease obligations		(0.1)
Proceeds from short-term borrowings	5.9
Payments on short-term borrowings	(13.8)	10.8
Net (payments) proceeds from revolving credit facilities	(1.2)	1.5
Changes in overdraft balances and other	3.5
Net intercompany financing activity	0	0
Net cash provided by (used in) financing activities	(35.2)	(45.9)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(90.7)	(253.7)
Effect of foreign exchange rate changes on cash and cash equivalents	(21.8)	11.1
Balance at beginning of year	624.0	1,078.9
Balance at end of period	$ 511.5	$ 836.3