Legal Proceedings (Details) (Patent infringement suit against Rogers Family Company)	3 Months Ended
Dec. 28, 2013 item
Patent infringement suit against Rogers Family Company
Gain Contingencies [Line Items]
Number of Keurig patents allegedly violated by Rogers	3

Represents the number of patents alleged to have been violated in a patent infringement suit filed by the entity.

No definition available.

Name:	gmcr_NumberOfPatentsInInfringementSuitFiledByEntity
Namespace Prefix:	gmcr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration