Supplemental Guarantor Information Cash Flows (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 30, 2013
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	$ 149.7	$ 118.4
Cash flows from investing activities:
Additions to properties	(65.3)	(68.3)
Proceeds from sales of properties and other assets	1.7	3.7
Investment in MillerCoors	(354.9)	(331.8)
Loan repayments	2.2	2.6
Loan advances	(16.7)	(2.5)
Net cash provided by (used in) investing activities	(173.5)	(173.9)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	20.2	27.2
Excess tax benefits from share-based compensation	2.0	1.6
Dividends paid	(68.2)	(58.2)
Payments for purchase of noncontrolling interest	(0.2)	(0.2)
Payments on long-term debt and capital lease obligations	(46.9)	0
Payments on short-term borrowings	(12.5)	(13.8)
Payments on settlement of derivative instruments	65.2	0
Net proceeds from (payments on) revolving credit facilities and commercial paper	(41.8)	(1.2)
Net cash used in financing activities	(80.2)	(35.2)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(104.0)	(90.7)
Effect of foreign exchange rate changes on cash and cash equivalents	(0.7)	(21.8)
Balance at beginning of year	442.3	624.0
Balance at end of period	337.6	511.5
Parent Guarantor, 2007 and 2012 Issuer [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	8.0	(58.0)
Cash flows from investing activities:
Additions to properties	(3.0)	(1.6)
Proceeds from sales of properties and other assets	0	0
Investment in MillerCoors	0	0
Return of capital from MillerCoors	0	0
Loan repayments	0	0
Loan advances	0	0
Net intercompany investing activity	0	0
Net cash provided by (used in) investing activities	(3.0)	(1.6)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	20.2	27.2
Excess tax benefits from share-based compensation	2.0	1.6
Dividends paid	(60.2)	(51.2)
Payments for purchase of noncontrolling interest	0	0
Payments on long-term debt and capital lease obligations	(0.4)
Proceeds from short-term borrowings	0	0
Payments on short-term borrowings	0	0
Payments on settlement of derivative instruments	0
Net proceeds from (payments on) revolving credit facilities and commercial paper	(28.6)	0
Change in overdraft balances and other	0	0
Net intercompany financing activity	0	0
Net cash used in financing activities	(67.0)	(22.4)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(62.0)	(82.0)
Effect of foreign exchange rate changes on cash and cash equivalents	0	0
Balance at beginning of year	90.6	189.8
Balance at end of period	28.6	107.8
Subsidiary Guarantors
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	98.1	174.6
Cash flows from investing activities:
Additions to properties	(42.5)	(30.2)
Proceeds from sales of properties and other assets	1.4	1.2
Investment in MillerCoors	(354.9)	(331.8)
Return of capital from MillerCoors	259.5	(222.4)
Loan repayments	2.2	2.6
Loan advances	(1.6)	(2.5)
Net intercompany investing activity	140.1	(9.4)
Net cash provided by (used in) investing activities	4.2	(147.7)
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	0
Payments for purchase of noncontrolling interest	0	0
Payments on long-term debt and capital lease obligations	(46.4)
Proceeds from short-term borrowings	0	0
Payments on short-term borrowings	0	0
Payments on settlement of derivative instruments	65.2
Net proceeds from (payments on) revolving credit facilities and commercial paper	0	0
Change in overdraft balances and other	0	(0.2)
Net intercompany financing activity	(127.5)	0
Net cash used in financing activities	(239.1)	(0.2)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(136.8)	26.7
Effect of foreign exchange rate changes on cash and cash equivalents	(3.6)	(16.7)
Balance at beginning of year	248.7	249.3
Balance at end of period	108.3	259.3
Subsidiary Non-Guarantors
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	43.6	2.5
Cash flows from investing activities:
Additions to properties	(19.8)	(36.5)
Proceeds from sales of properties and other assets	0.3	2.5
Investment in MillerCoors	0	0
Return of capital from MillerCoors	0	0
Loan repayments	0	0
Loan advances	(15.1)	0
Net intercompany investing activity	127.5	0
Net cash provided by (used in) investing activities	92.9	(34.0)
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	(8.0)	(7.7)
Payments for purchase of noncontrolling interest	(0.2)	(0.2)
Payments on long-term debt and capital lease obligations	(0.1)
Proceeds from short-term borrowings	20.9	5.9
Payments on short-term borrowings	(12.5)	(13.8)
Payments on settlement of derivative instruments	0
Net proceeds from (payments on) revolving credit facilities and commercial paper	(13.2)	(1.2)
Change in overdraft balances and other	111.5	3.7
Net intercompany financing activity	(140.1)	9.4
Net cash used in financing activities	(41.7)	(3.9)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	94.8	(35.4)
Effect of foreign exchange rate changes on cash and cash equivalents	2.9	(5.1)
Balance at beginning of year	103.0	184.9
Balance at end of period	200.7	144.4
Eliminations
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	0	(0.7)
Cash flows from investing activities:
Additions to properties	0	0
Proceeds from sales of properties and other assets	0	0
Investment in MillerCoors	0	0
Return of capital from MillerCoors	0	0
Loan repayments	0	0
Loan advances	0	0
Net intercompany investing activity	(267.6)	9.4
Net cash provided by (used in) investing activities	(267.6)	9.4
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	0.7
Payments for purchase of noncontrolling interest		0
Payments on long-term debt and capital lease obligations	0
Proceeds from short-term borrowings	0	0
Payments on short-term borrowings	0	0
Payments on settlement of derivative instruments	0
Net proceeds from (payments on) revolving credit facilities and commercial paper	0	0
Change in overdraft balances and other	0	0
Net intercompany financing activity	267.6	(9.4)
Net cash used in financing activities	267.6	(8.7)
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	149.7	118.4
Cash flows from investing activities:
Additions to properties	(65.3)	(68.3)
Proceeds from sales of properties and other assets	1.7	3.7
Investment in MillerCoors	(354.9)	(331.8)
Return of capital from MillerCoors	259.5	(222.4)
Loan repayments	2.2	2.6
Loan advances	(16.7)	(2.5)
Net intercompany investing activity	0	0
Net cash provided by (used in) investing activities	(173.5)	(173.9)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	20.2	27.2
Excess tax benefits from share-based compensation	2.0	1.6
Dividends paid	(68.2)	(58.2)
Payments for purchase of noncontrolling interest	(0.2)	(0.2)
Payments on long-term debt and capital lease obligations	(46.9)
Proceeds from short-term borrowings	20.9	5.9
Payments on short-term borrowings	(12.5)	(13.8)
Payments on settlement of derivative instruments	65.2
Net proceeds from (payments on) revolving credit facilities and commercial paper	(41.8)	(1.2)
Change in overdraft balances and other	111.5	3.5
Net intercompany financing activity	0	0
Net cash used in financing activities	(80.2)	(35.2)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(104.0)	(90.7)
Effect of foreign exchange rate changes on cash and cash equivalents	(0.7)	(21.8)
Balance at beginning of year	442.3	624.0
Balance at end of period	$ 337.6	$ 511.5