v2.4.0.8

Inventory Financing Agreements (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2014
Inventory Financing Agreements [Abstract] |
Inventory Financing Agreements | The following table presents the amounts included in accounts payable-inventory financing:
(in millions) |  | September 30, 2014 |  | December 31, 2013
Revolving Loan inventory financing agreement |  | $ | 298.8 |  |  | $ | 256.1 |
Other inventory financing agreements |  | 0.9 |  |  | 0.5 |
Accounts payable-inventory financing |  | $ | 299.7 |  |  | $ | 256.6 |

X
- Details
Name: | cdw_InventoryFinancingAgreementsAbstract
Namespace Prefix: | cdw_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Inventory Financing Agreements [Table Text Block] + References No definition available. + Details
Name: | cdw_InventoryFinancingAgreementsTableTextBlock
Namespace Prefix: | cdw_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration