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Summary of Significant Accounting Policies - Property Plant and Equipment (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 Year | Dec. 31, 2013
Property, Plant and Equipment [Line Items] |  |
Unamortized software development costs | 411,056 arw_UnamortizedSoftwareDevelopmentCosts | $ 420,180 arw_UnamortizedSoftwareDevelopmentCosts
Building [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, Plant and Equipment, Minimum Useful Life | 20 arw_PropertyPlantandEquipmentMinimumUsefulLife / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember |
Property, Plant and Equipment, Maximum Useful Life | 30 arw_PropertyPlantandEquipmentMaximumUsefulLife / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember |
Machinery and Equipment [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, Plant and Equipment, Minimum Useful Life | 3 arw_PropertyPlantandEquipmentMinimumUsefulLife / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_MachineryAndEquipmentMember |
Property, Plant and Equipment, Maximum Useful Life | 10 arw_PropertyPlantandEquipmentMaximumUsefulLife / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_MachineryAndEquipmentMember |
Computer Software, Intangible Asset [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, Plant and Equipment, Minimum Useful Life | 3 arw_PropertyPlantandEquipmentMinimumUsefulLife / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ComputerSoftwareIntangibleAssetMember |
Property, Plant and Equipment, Maximum Useful Life | 7 arw_PropertyPlantandEquipmentMaximumUsefulLife / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ComputerSoftwareIntangibleAssetMember |

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- Definition Property, Plant and Equipment, Maximum Useful Life + References No definition available. + Details
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- Definition Property, Plant and Equipment, Minimum Useful Life + References No definition available. + Details
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Namespace Prefix: | arw_
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- Definition Unamortized software development costs + References No definition available. + Details
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Namespace Prefix: | arw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ComputerSoftwareIntangibleAssetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |