Basis of Presentation and Summary of Significant Accounting Policies Narrative (Details)	3 Months Ended
Mar. 30, 2013 weeks
Minimum [Member]
Number of Weeks in Reporting Period	13
Number of Weeks in Fiscal Year, Range (in weeks)	52
Maximum [Member]
Number of Weeks in Reporting Period	13
Number of Weeks in Fiscal Year, Range (in weeks)	53

Disclosure of the low end of the range of the number of weeks that may be included in the entity's fiscal year.

No definition available.

Name:	tap_NumberOfWeeksInFiscalYearLowEndOfRange
Namespace Prefix:	tap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration