XML 36 R46.htm IDEA: XBRL DOCUMENT
v3.19.3

Contingencies - Litigation (Details) | Sep. 14, 2018 number_patents Petition | Feb. 28, 2018 number_patents | Sep. 15, 2017 number_patents | Mar. 28, 2016 number_patents | Sep. 30, 2019 USD ($)
--- | --- | --- | --- | --- | ---
Loss Contingencies [Line Items] |  |  |  |  |
Loss contingencies, patents allegedly infringed, number of inter partes review requested | Petition | 2 |  |  |  |
Loss contingency accrual | $ |  |  |  |  | $ 0
AgaMatrix |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss contingency, patents allegedly infringed, number |  |  |  | 3 |
Loss contingencies, patents allegedly infringed, number of inter partes review requested | 2 |  |  |  |
WaveForm Technologies, Inc. |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss contingency, patents allegedly infringed, number transferred to new plaintiff |  |  |  | 3 |
Loss contingencies, patents allegedly infringed, number of inter partes review requested |  | 2 |  |  |
AgaMatrix |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Gain contingency, patents allegedly infringed upon, number |  |  | 2 |  |

X
- Definition Loss Contingencies, Patents Allegedly Infringed, Number Of Inter Partes Reviews Requested + References No definition available. + Details
Name: | dxcm_LossContingenciesPatentsAllegedlyInfringedNumberOfInterPartesReviewRequested
Namespace Prefix: | dxcm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loss Contingency, Patents Allegedly Infringed, Number Transferred To New Plaintiff + References No definition available. + Details
Name: | dxcm_LossContingencyPatentsAllegedlyInfringedNumberTransferredToNewPlaintiff
Namespace Prefix: | dxcm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of entity's patents that another entity has allegedly infringed. + References No definition available. + Details
Name: | us-gaap_GainContingencyPatentsAllegedlyInfringedUponNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of loss contingency liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349 + Details
Name: | us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of another entity's patents that the entity has allegedly infringed. + References No definition available. + Details
Name: | us-gaap_LossContingencyPatentsAllegedlyInfringedNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dxcm_NameOfPlaintiffAxis=dxcm_AgaMatrixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dxcm_NameOfPlaintiffAxis=dxcm_WaveFormTechnologiesInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dxcm_NameOfDefendantAxis=dxcm_AgaMatrixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |