Supplemental Guarantor Information Cash Flows (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	$ 198.1	$ 576.0
Cash flows from investing activities:
Additions to properties	(139.8)	(126.4)
Proceeds from sales of properties and other assets	7.5	4.1
Payments to Acquire Businesses, Net of Cash Acquired	51.1	0.0
Investment in MillerCoors	(758.1)	(764.4)
Loan repayments	19.0	4.0
Loan advances	(26.1)	(3.3)
Other	(2.4)	0.0
Net cash used in investing activities	(258.1)	(194.1)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	28.6	27.7
Excess tax benefits from share-based compensation	7.6	3.2
Dividends paid	(152.3)	(136.7)
Payments for the Repurchase of Treasury Stock	(50.1)	0.0
Payments on long-term debt and capital lease obligations	(0.7)	(62.2)
Payments on short-term borrowings	(14.6)	(23.3)
Payments on settlement of derivative instruments	0.0	(65.2)
Net proceeds from (payments on) revolving credit facilities and commercial paper	67.2	(214.3)
Net cash provided by (used in) financing activities	(124.7)	(323.1)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(184.7)	58.8
Effect of foreign exchange rate changes on cash and cash equivalents	(26.1)	4.9
Balance at beginning of year	624.6	442.3
Balance at end of period	413.8	506.0
Parent Guarantor and 2012 Issuer [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	192.2	178.0
Cash flows from investing activities:
Additions to properties	(6.4)	(5.5)
Proceeds from sales of properties and other assets	0.0	0.0
Payments to Acquire Businesses, Net of Cash Acquired	0.0
Investment in MillerCoors	0.0	0.0
Return of capital from MillerCoors	0.0	0.0
Loan repayments	0.0	0.0
Loan advances	0.0	0.0
Other	0.0
Net intercompany investing activity	(56.2)	(15.1)
Net cash used in investing activities	(62.6)	(20.6)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	28.6	27.7
Excess tax benefits from share-based compensation	7.6	3.2
Dividends paid	(136.0)	(120.6)
Payments for the Repurchase of Treasury Stock	(50.1)
Payments on long-term debt and capital lease obligations	(0.4)	(0.4)
Proceeds from short-term borrowings	0.0	0.0
Payments on short-term borrowings	0.0	0.0
Payments on settlement of derivative instruments		0.0
Net proceeds from (payments on) revolving credit facilities and commercial paper	64.9	(78.7)
Change in overdraft balances and other	0.0	(1.8)
Net intercompany financing activity	0.0	0.0
Net cash provided by (used in) financing activities	(85.4)	(170.6)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	44.2	(13.2)
Effect of foreign exchange rate changes on cash and cash equivalents	0.0	0.0
Balance at beginning of year	40.9	90.6
Balance at end of period	85.1	77.4
Subsidiary Guarantors [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	83.5	292.2
Cash flows from investing activities:
Additions to properties	(84.2)	(79.2)
Proceeds from sales of properties and other assets	2.3	2.8
Payments to Acquire Businesses, Net of Cash Acquired	6.3
Investment in MillerCoors	(758.1)	(764.4)
Return of capital from MillerCoors	692.9	691.9
Loan repayments	4.5	4.0
Loan advances	(6.2)	(3.3)
Other	(2.4)
Net intercompany investing activity	(173.8)	137.6
Net cash used in investing activities	(331.3)	(10.6)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	0.0	0.0
Excess tax benefits from share-based compensation	0.0	0.0
Dividends paid	(246.3)	0.0
Payments for the Repurchase of Treasury Stock	0.0
Payments on long-term debt and capital lease obligations	(0.3)	(61.7)
Proceeds from short-term borrowings	0.0	0.0
Payments on short-term borrowings	0.0	0.0
Payments on settlement of derivative instruments		(65.2)
Net proceeds from (payments on) revolving credit facilities and commercial paper	0.0	0.0
Change in overdraft balances and other	0.0	0.6
Net intercompany financing activity	240.7	(142.4)
Net cash provided by (used in) financing activities	(5.9)	(268.7)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(253.7)	12.9
Effect of foreign exchange rate changes on cash and cash equivalents	(17.9)	2.0
Balance at beginning of year	470.7	248.7
Balance at end of period	199.1	263.6
Subsidiary Non Guarantors [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	168.7	109.9
Cash flows from investing activities:
Additions to properties	(49.2)	(41.7)
Proceeds from sales of properties and other assets	5.2	1.3
Payments to Acquire Businesses, Net of Cash Acquired	44.8
Investment in MillerCoors	0.0	0.0
Return of capital from MillerCoors	0.0	0.0
Loan repayments	14.5	0.0
Loan advances	(19.9)	0.0
Other	0.0
Net intercompany investing activity	(184.5)	157.5
Net cash used in investing activities	(278.7)	117.1
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	0.0	0.0
Excess tax benefits from share-based compensation	0.0	0.0
Dividends paid	(16.3)	(20.2)
Payments for the Repurchase of Treasury Stock	0.0
Payments on long-term debt and capital lease obligations	0.0	(0.1)
Proceeds from short-term borrowings	27.9	20.9
Payments on short-term borrowings	(14.6)	(23.3)
Payments on settlement of derivative instruments		0.0
Net proceeds from (payments on) revolving credit facilities and commercial paper	2.3	(135.6)
Change in overdraft balances and other	(38.3)	128.0
Net intercompany financing activity	173.8	(137.6)
Net cash provided by (used in) financing activities	134.8	(167.9)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	24.8	59.1
Effect of foreign exchange rate changes on cash and cash equivalents	(8.2)	2.9
Balance at beginning of year	113.0	103.0
Balance at end of period	129.6	165.0
Eliminations [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	(246.3)	(4.1)
Cash flows from investing activities:
Additions to properties	0.0	0.0
Proceeds from sales of properties and other assets	0.0	0.0
Payments to Acquire Businesses, Net of Cash Acquired	0.0
Investment in MillerCoors	0.0	0.0
Return of capital from MillerCoors	0.0	0.0
Loan repayments	0.0	0.0
Loan advances	0.0	0.0
Other	0.0
Net intercompany investing activity	414.5	(280.0)
Net cash used in investing activities	414.5	(280.0)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	0.0	0.0
Excess tax benefits from share-based compensation	0.0	0.0
Dividends paid	246.3	4.1
Payments for the Repurchase of Treasury Stock	0.0
Payments on long-term debt and capital lease obligations	0.0	0.0
Proceeds from short-term borrowings	0.0	0.0
Payments on short-term borrowings	0.0	0.0
Payments on settlement of derivative instruments		0.0
Net proceeds from (payments on) revolving credit facilities and commercial paper	0.0	0.0
Change in overdraft balances and other	0.0	0.0
Net intercompany financing activity	(414.5)	280.0
Net cash provided by (used in) financing activities	(168.2)	284.1
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	0.0	0.0
Effect of foreign exchange rate changes on cash and cash equivalents	0.0	0.0
Balance at beginning of year	0.0	0.0
Balance at end of period	0.0	0.0
Consolidated [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by (used in) operating activities	198.1	576.0
Cash flows from investing activities:
Additions to properties	(139.8)	(126.4)
Proceeds from sales of properties and other assets	7.5	4.1
Payments to Acquire Businesses, Net of Cash Acquired	51.1
Investment in MillerCoors	(758.1)	(764.4)
Return of capital from MillerCoors	692.9	691.9
Loan repayments	19.0	4.0
Loan advances	(26.1)	(3.3)
Other	(2.4)
Net intercompany investing activity	0.0	0.0
Net cash used in investing activities	(258.1)	(194.1)
Cash flows from financing activities:
Exercise of stock options under equity compensation plans	28.6	27.7
Excess tax benefits from share-based compensation	7.6	3.2
Dividends paid	(152.3)	(136.7)
Payments for the Repurchase of Treasury Stock	(50.1)
Payments on long-term debt and capital lease obligations	(0.7)	(62.2)
Proceeds from short-term borrowings	27.9	20.9
Payments on short-term borrowings	(14.6)	(23.3)
Payments on settlement of derivative instruments		(65.2)
Net proceeds from (payments on) revolving credit facilities and commercial paper	67.2	(214.3)
Change in overdraft balances and other	(38.3)	126.8
Net intercompany financing activity	0.0	0.0
Net cash provided by (used in) financing activities	(124.7)	(323.1)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(184.7)	58.8
Effect of foreign exchange rate changes on cash and cash equivalents	(26.1)	4.9
Balance at beginning of year	624.6	442.3
Balance at end of period	$ 413.8	$ 506.0