v2.4.0.8

Segment Information | 9 Months Ended
--- | ---
Sep. 30, 2014
Segment Reporting Information [Line Items] |
Schedule of Segment Reporting Information, by Segment [Table Text Block] | The following table presents information about the Company’s segments for the three and nine months ended September 30, 2014 and 2013:
(in millions) |  | Corporate |  | Public |  | Other |  | Headquarters |  | Total
Three Months Ended September 30, 2014: |  |  |  |  |  |  |  |  |  |
Net sales |  | $ | 1,622.7 |  |  | $ | 1,468.8 |  |  | $ | 174.6 |  |  | $ | — |  |  | $ | 3,266.1 |
Income (loss) from operations |  | 103.2 |  |  | 101.3 |  |  | 8.5 |  |  | (28.3 | ) |  | 184.7 |
Depreciation and amortization expense |  | (24.1 | ) |  | (10.9 | ) |  | (2.2 | ) |  | (14.6 | ) |  | (51.8 | )
Three Months Ended September 30, 2013: |  |  |  |  |  |  |  |  |  |
Net sales |  | $ | 1,465.8 |  |  | $ | 1,244.6 |  |  | $ | 153.9 |  |  | $ | — |  |  | $ | 2,864.3 |
Income (loss) from operations |  | 63.2 |  |  | 71.1 |  |  | 3.7 |  |  | (45.1 | ) |  | 92.9 |
Depreciation and amortization expense |  | (24.3 | ) |  | (11.0 | ) |  | (2.1 | ) |  | (14.6 | ) |  | (52.0 | )
(in millions) |  | Corporate |  | Public |  | Other |  | Headquarters |  | Total
Nine Months Ended September 30, 2014: |  |  |  |  |  |  |  |  |  |
Net Sales |  | $ | 4,784.5 |  |  | $ | 3,710.3 |  |  | $ | 529.6 |  |  | $ | — |  |  | $ | 9,024.4 |
Income (loss) from operations |  | 323.9 |  |  | 244.1 |  |  | 22.7 |  |  | (82.0 | ) |  | 508.7 |
Depreciation and amortization expense |  | (72.3 | ) |  | (32.8 | ) |  | (6.5 | ) |  | (44.3 | ) |  | (155.9 | )
Nine Months Ended September 30, 2013: |  |  |  |  |  |  |  |  |  |
Net sales |  | $ | 4,407.1 |  |  | $ | 3,174.0 |  |  | $ | 474.2 |  |  | $ | — |  |  | $ | 8,055.3 |
Income (loss) from operations |  | 260.5 |  |  | 185.8 |  |  | 18.6 |  |  | (98.3 | ) |  | 366.6 |
Depreciation and amortization expense |  | (73.1 | ) |  | (33.1 | ) |  | (6.6 | ) |  | (43.5 | ) |  | (156.3 | )
Segment Information | Segment Information Segment information is presented in accordance with a “management approach,” which designates the internal reporting used by the chief operating decision-maker for making decisions and assessing performance as the source of the Company's reportable segments. The Company's segments are organized in a manner consistent with which separate financial information is available and evaluated regularly by the chief operating decision-maker in deciding how to allocate resources and in assessing performance. The Company has two reportable segments: Corporate, which is comprised primarily of private sector business customers, and Public, which is comprised of government agencies and education and healthcare institutions. The Company also has two other operating segments, CDW Advanced Services and Canada, which do not meet the reportable segment quantitative thresholds and, accordingly, are combined together as “Other.” The Company has centralized logistics and headquarters functions that provide services to the segments. The logistics function includes purchasing, distribution and fulfillment services to support both the Corporate and Public segments. As a result, costs and intercompany charges associated with the logistics function are fully allocated to both of these segments based on a percent of sales. The centralized headquarters function provides services in areas such as accounting, information technology, marketing, legal and coworker services. Headquarters' function costs that are not allocated to the segments are included under the heading of “Headquarters” in the tables below. Depreciation expense is included in Headquarters as it is not allocated among segments or used in measuring segment performance. The Company allocates resources to and evaluates performance of its segments based on net sales, income (loss) from operations and Adjusted EBITDA, a non-GAAP measure as defined in the Company's credit agreements. However, the Company has concluded that income (loss) from operations is the more useful measure in terms of discussion of operating results, as it is a GAAP measure. Segment information for total assets and capital expenditures is not presented as such information is not used in measuring segment performance or allocating resources between segments. Selected Segment Financial Information The following table presents information about the Company’s segments for the three and nine months ended September 30, 2014 and 2013:
(in millions) |  | Corporate |  | Public |  | Other |  | Headquarters |  | Total
Three Months Ended September 30, 2014: |  |  |  |  |  |  |  |  |  |
Net sales |  | $ | 1,622.7 |  |  | $ | 1,468.8 |  |  | $ | 174.6 |  |  | $ | — |  |  | $ | 3,266.1 |
Income (loss) from operations |  | 103.2 |  |  | 101.3 |  |  | 8.5 |  |  | (28.3 | ) |  | 184.7 |
Depreciation and amortization expense |  | (24.1 | ) |  | (10.9 | ) |  | (2.2 | ) |  | (14.6 | ) |  | (51.8 | )
Three Months Ended September 30, 2013: |  |  |  |  |  |  |  |  |  |
Net sales |  | $ | 1,465.8 |  |  | $ | 1,244.6 |  |  | $ | 153.9 |  |  | $ | — |  |  | $ | 2,864.3 |
Income (loss) from operations |  | 63.2 |  |  | 71.1 |  |  | 3.7 |  |  | (45.1 | ) |  | 92.9 |
Depreciation and amortization expense |  | (24.3 | ) |  | (11.0 | ) |  | (2.1 | ) |  | (14.6 | ) |  | (52.0 | )
(in millions) |  | Corporate |  | Public |  | Other |  | Headquarters |  | Total
Nine Months Ended September 30, 2014: |  |  |  |  |  |  |  |  |  |
Net Sales |  | $ | 4,784.5 |  |  | $ | 3,710.3 |  |  | $ | 529.6 |  |  | $ | — |  |  | $ | 9,024.4 |
Income (loss) from operations |  | 323.9 |  |  | 244.1 |  |  | 22.7 |  |  | (82.0 | ) |  | 508.7 |
Depreciation and amortization expense |  | (72.3 | ) |  | (32.8 | ) |  | (6.5 | ) |  | (44.3 | ) |  | (155.9 | )
Nine Months Ended September 30, 2013: |  |  |  |  |  |  |  |  |  |
Net sales |  | $ | 4,407.1 |  |  | $ | 3,174.0 |  |  | $ | 474.2 |  |  | $ | — |  |  | $ | 8,055.3 |
Income (loss) from operations |  | 260.5 |  |  | 185.8 |  |  | 18.6 |  |  | (98.3 | ) |  | 366.6 |
Depreciation and amortization expense |  | (73.1 | ) |  | (33.1 | ) |  | (6.6 | ) |  | (43.5 | ) |  | (156.3 | )

X
- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8721-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8736-108599 + Details
Name: | us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8864-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8933-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8844-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8538-108599 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8380-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8984-108599 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8924-108599 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9031-108599 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8971-108599 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8595-108599 + Details
Name: | us-gaap_SegmentReportingDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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