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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

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The cash outflow associated with security instruments that either represent a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes repayments of (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c).

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Supplemental Guarantor Information Supplemental Narrative (Details) CAD in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Dec. 25, 2010 USD ($)	Dec. 31, 2014 USD ($)	May. 03, 2012 USD ($)	Oct. 06, 2010 USD ($)	Sep. 22, 2005 CAD	Sep. 22, 2005 USD ($)
Comprehensive income (loss) attributable to Molson Coors Brewing Company	$ 463,600,000	$ 453,400,000	$ (92,700,000)	$ 455,300,000
Stockholders' Equity Attributable to Parent	7,607,100,000		7,607,100,000			$ 7,863,300,000
Parent Guarantor and 2012 Issuer [Member]
Comprehensive income (loss) attributable to Molson Coors Brewing Company	463,600,000	$ 453,400,000	(92,700,000)	$ 455,300,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	12,673,400,000		12,673,400,000			12,582,800,000
Stockholders' Equity Attributable to Parent	$ 7,607,100,000		$ 7,607,100,000			$ 7,863,300,000
Senior Notes [Member]
Debt instrument, face amount							$ 1,900,000,000
Senior Notes [Member] \| Series A notes due 2017 CAD 500 million 3.95% [Member]
Debt instrument, face amount								$ 500,000,000
Debt instrument, interest rate percentage								3.95%
Senior Notes [Member] \| Parent Company [Member] \| Senior Notes Due 2017 $300M 2.0% [Member]
Debt instrument, face amount							$ 300,000,000
Debt instrument, interest rate percentage							2.00%
Senior Notes [Member] \| Parent Company [Member] \| Senior Notes Due 2022 $500M 3.5% [Member]
Debt instrument, face amount							$ 500,000,000
Debt instrument, interest rate percentage							3.50%
Senior Notes [Member] \| Parent Company [Member] \| Senior Notes Due 2042 $1.1B 5.0% [Member]
Debt instrument, face amount							$ 1,100,000,000
Debt instrument, interest rate percentage							5.00%
Senior Notes [Member] \| Issuer 2005 And Issuer 2010 [Member]
Debt instrument, face amount										$ 1,100,000,000
Senior Notes [Member] \| Issuer 2005 And Issuer 2010 [Member] \| Senior Notes 4.85 Percent and 5 Percent due 2010 and 2015 [Member]
Debt instrument, face amount										$ 300,000,000
Debt instrument, interest rate percentage									4.85%	4.85%
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities					$ 300,000,000
Senior Notes [Member] \| Issuer 2005 And Issuer 2010 [Member] \| Series A notes due 2017 CAD 500 million 3.95% [Member]
Debt instrument, face amount \| CAD									CAD 900
Debt instrument, interest rate percentage									5.00%	5.00%