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Segment Information | 3 Months Ended
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Mar. 31, 2026
Segment Reporting [Abstract] |
Segment Information | Segment Information Effective January 1, 2026, the Company realigned its customer‑facing sales organization to better align with the evolving needs of its customer end markets. As a result of this realignment, the Company revised its internal reporting structure, which changed the manner in which the chief operating decision maker (“CODM”), who is the Chief Executive Officer, evaluates performance, allocates resources, and manages operations. Following the realignment, the Company has three reportable segments: Commercial, Government, and Education. In addition, there are two other operating segments: CDW UK and CDW Canada, both of which do not meet the reportable segment quantitative thresholds and, accordingly, are included in an all other category (“Other”). The Commercial reportable segment primarily serves corporate, financial services, and healthcare customers in the US, each of which represents a unique customer channel. The Government reportable segment primarily serves federal, state, and local agencies in the US, along with certain private sector business customers that primarily support or interact with government agencies. The Education reportable segment primarily serves primary, secondary, and higher education institutions in the US. Historically reported segment financial information has been recast to reflect the new segment structure. The accounting policies used to determine profit and loss measures are consistent across all reportable segments and on a consolidated basis. Additionally, the CODM reviews key profit and loss measures for each reportable segment consistently based on both segment Gross profit and Operating income. Specifically, the CODM reviews Gross profit by segment to establish forecasting and evaluate profitability and Operating income by segment to make investment strategy and performance-based compensation decisions. Segment information for Total assets and capital expenditures is not presented given that such information is not used in measuring segment performance or allocating resources between segments. 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 the Commercial, Government, and Education segments. As a result, costs and intercompany charges associated with the logistics function are fully allocated to all of these segments based on a percentage of certain sales metrics. 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. The Company updated its methodology for allocating headquarters function costs to better distinguish between costs that directly support the operating segments and costs that are enterprise‑wide in nature, consistent with how those costs are managed and reviewed by the CODM. These costs were allocated to the segments based on activity-based drivers. The updated methodology was applied to historical periods presented, resulting in an adjusted amount of operating expense retained by Headquarters. Information about the Company’s segments for the three months ended March 31, 2026 and 2025 are as follows:
| Commercial |  | Government |  | Education |  | Other |  | Headquarters |  | Total
Three Months Ended March 31, 2026 |  |  |  |  |  |  |  |  |  |  |
Net sales | $ | 3,569.4 |  |  | $ | 632.9 |  |  | $ | 675.0 |  |  | $ | 802.5 |  |  | $ | — |  |  | $ | 5,679.8 |
Cost of sales | 2,771.3 |  |  | 508.2 |  |  | 562.5 |  |  | 647.8 |  |  | — |  |  | 4,489.8 |
Gross profit | 798.1 |  |  | 124.7 |  |  | 112.5 |  |  | 154.7 |  |  | — |  |  | 1,190.0 |
Other segment expense items(1) | 443.4 |  |  | 99.5 |  |  | 73.1 |  |  | 108.2 |  |  | 89.8 |  |  | 814.0 |
Operating income (loss) | $ | 354.7 |  |  | $ | 25.2 |  |  | $ | 39.4 |  |  | $ | 46.5 |  |  | $ | (89.8) |  |  | $ | 376.0 |
Other Segment Information(2) |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization expense | $ | 26.8 |  |  | $ | 10.5 |  |  | $ | 3.7 |  |  | $ | 7.8 |  |  | $ | 26.1 |  |  | $ | 74.9 |
Three Months Ended March 31, 2025 |  |  |  |  |  |  |  |  |  |  |
Net sales | $ | 3,255.3 |  |  | $ | 604.9 |  |  | $ | 658.5 |  |  | $ | 680.4 |  |  | $ | — |  |  | $ | 5,199.1 |
Cost of sales | 2,505.5 |  |  | 470.0 |  |  | 553.1 |  |  | 548.2 |  |  | — |  |  | 4,076.8 |
Gross profit | 749.8 |  |  | 134.9 |  |  | 105.4 |  |  | 132.2 |  |  | — |  |  | 1,122.3 |
Other segment expense items(1) | 389.1 |  |  | 109.4 |  |  | 80.1 |  |  | 93.1 |  |  | 89.2 |  |  | 760.9 |
Operating income (loss) | $ | 360.7 |  |  | $ | 25.5 |  |  | $ | 25.3 |  |  | $ | 39.1 |  |  | $ | (89.2) |  |  | $ | 361.4 |
Other Segment Information(2) |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization expense | $ | 26.6 |  |  | $ | 12.3 |  |  | $ | 4.2 |  |  | $ | 6.8 |  |  | $ | 25.0 |  |  | $ | 74.9 |
(1)Primarily includes payroll and other coworker costs, advertising expense and other selling and administrative costs.
(2)Depreciation and amortization expense is primarily included within Other segment expense items.
Geographic Areas and Revenue Mix
| Three Months Ended March 31, 2026
| Commercial |  | Government |  | Education |  | Other |  | Total
Geography(1) |  |  |  |  |  |  |  |  |
United States | $ | 3,545.7 |  |  | $ | 632.8 |  |  | $ | 674.9 |  |  | $ | 7.5 |  |  | $ | 4,860.9 |
Rest of World | 23.7 |  |  | 0.1 |  |  | 0.1 |  |  | 795.0 |  |  | 818.9 |
Total Net sales | $ | 3,569.4 |  |  | $ | 632.9 |  |  | $ | 675.0 |  |  | $ | 802.5 |  |  | $ | 5,679.8 |
Major Product and Services |  |  |  |  |  |  |  |  |
Hardware | $ | 2,497.6 |  |  | $ | 430.6 |  |  | $ | 575.1 |  |  | $ | 611.6 |  |  | $ | 4,114.9 |
Software | 739.9 |  |  | 148.3 |  |  | 60.2 |  |  | 106.5 |  |  | 1,054.9 |
Services | 307.2 |  |  | 53.1 |  |  | 39.3 |  |  | 80.9 |  |  | 480.5 |
Other(2) | 24.7 |  |  | 0.9 |  |  | 0.4 |  |  | 3.5 |  |  | 29.5 |
Total Net sales | $ | 3,569.4 |  |  | $ | 632.9 |  |  | $ | 675.0 |  |  | $ | 802.5 |  |  | $ | 5,679.8 |
Sales by Customer Channel |  |  |  |  |  |  |  |  |
Corporate | $ | 2,374.3 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,374.3 |
Financial Services | 428.4 |  |  | — |  |  | — |  |  | — |  |  | 428.4 |
Healthcare | 766.7 |  |  | — |  |  | — |  |  | — |  |  | 766.7 |
Government | — |  |  | 632.9 |  |  | — |  |  | — |  |  | 632.9 |
Education | — |  |  | — |  |  | 675.0 |  |  | — |  |  | 675.0 |
Other | — |  |  | — |  |  | — |  |  | 802.5 |  |  | 802.5 |
Total Net sales | $ | 3,569.4 |  |  | $ | 632.9 |  |  | $ | 675.0 |  |  | $ | 802.5 |  |  | $ | 5,679.8 |
Timing of Revenue Recognition |  |  |  |  |  |  |  |  |
Transferred at a point in time where CDW is principal | $ | 3,032.8 |  |  | $ | 541.4 |  |  | $ | 618.7 |  |  | $ | 693.5 |  |  | $ | 4,886.4 |
Transferred at a point in time where CDW is agent | 297.1 |  |  | 44.5 |  |  | 29.8 |  |  | 39.3 |  |  | 410.7 |
Transferred over time where CDW is principal | 239.5 |  |  | 47.0 |  |  | 26.5 |  |  | 69.7 |  |  | 382.7 |
Total Net sales | $ | 3,569.4 |  |  | $ | 632.9 |  |  | $ | 675.0 |  |  | $ | 802.5 |  |  | $ | 5,679.8 |
(1)Net sales by geography is generally based on the ship-to address with the exception of certain services that may be performed at, or on behalf of, multiple locations. Such service arrangements are categorized based on the bill-to address.
(2)Includes items such as delivery charges to customers.
| Three Months Ended March 31, 2025
| Commercial |  | Government |  | Education |  | Other |  | Total
Geography(1) |  |  |  |  |  |  |  |  |
United States | $ | 3,224.9 |  |  | $ | 602.7 |  |  | $ | 658.3 |  |  | $ | 5.7 |  |  | $ | 4,491.6 |
Rest of World | 30.4 |  |  | 2.2 |  |  | 0.2 |  |  | 674.7 |  |  | 707.5 |
Total Net sales | $ | 3,255.3 |  |  | $ | 604.9 |  |  | $ | 658.5 |  |  | $ | 680.4 |  |  | $ | 5,199.1 |
Major Product and Services |  |  |  |  |  |  |  |  |
Hardware | $ | 2,282.5 |  |  | $ | 392.9 |  |  | $ | 563.8 |  |  | $ | 505.1 |  |  | $ | 3,744.3 |
Software | 651.9 |  |  | 146.0 |  |  | 55.6 |  |  | 94.8 |  |  | 948.3 |
Services | 299.9 |  |  | 64.3 |  |  | 37.6 |  |  | 77.5 |  |  | 479.3 |
Other(2) | 21.0 |  |  | 1.7 |  |  | 1.5 |  |  | 3.0 |  |  | 27.2 |
Total Net sales | $ | 3,255.3 |  |  | $ | 604.9 |  |  | $ | 658.5 |  |  | $ | 680.4 |  |  | $ | 5,199.1 |
Sales by Customer Channel |  |  |  |  |  |  |  |  |
Corporate | $ | 2,190.0 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,190.0 |
Financial Services | 334.1 |  |  | — |  |  | — |  |  | — |  |  | 334.1 |
Healthcare | 731.2 |  |  | — |  |  | — |  |  | — |  |  | 731.2 |
Government | — |  |  | 604.9 |  |  | — |  |  | — |  |  | 604.9 |
Education | — |  |  | — |  |  | 658.5 |  |  | — |  |  | 658.5 |
Other | — |  |  | — |  |  | — |  |  | 680.4 |  |  | 680.4 |
Total Net sales | $ | 3,255.3 |  |  | $ | 604.9 |  |  | $ | 658.5 |  |  | $ | 680.4 |  |  | $ | 5,199.1 |
Timing of Revenue Recognition |  |  |  |  |  |  |  |  |
Transferred at a point in time where CDW is principal | $ | 2,731.7 |  |  | $ | 506.4 |  |  | $ | 603.7 |  |  | $ | 574.6 |  |  | $ | 4,416.4 |
Transferred at a point in time where CDW is agent | 297.9 |  |  | 43.0 |  |  | 28.2 |  |  | 41.1 |  |  | 410.2 |
Transferred over time where CDW is principal | 225.7 |  |  | 55.5 |  |  | 26.6 |  |  | 64.7 |  |  | 372.5 |
Total Net sales | $ | 3,255.3 |  |  | $ | 604.9 |  |  | $ | 658.5 |  |  | $ | 680.4 |  |  | $ | 5,199.1 |
(1)Net sales by geography is generally based on the ship-to address with the exception of certain services that may be performed at, or on behalf of, multiple locations. Such service arrangements are categorized based on the bill-to address.
(2)Includes items such as delivery charges to customers.
The following table presents Net sales by major category for the three months ended March 31, 2026 and 2025. Categories are based upon internal classifications.
| Three Months Ended March 31,
| 2026 |  | 2025
| Net Sales |  | Percentage of Total Net Sales |  | Net Sales |  | Percentage of Total Net Sales
Hardware: |  |  |  |  |  |  |
Notebooks/Mobile Devices | $ | 1,410.0 |  |  | 24.8 | % |  | $ | 1,347.7 |  |  | 25.9 | %
Netcomm Products | 675.3 |  |  | 11.9 |  |  | 547.5 |  |  | 10.5 |
Collaboration | 431.3 |  |  | 7.6 |  |  | 402.8 |  |  | 7.7 |
Data Storage and Servers | 687.2 |  |  | 12.1 |  |  | 520.6 |  |  | 10.0 |
Desktops | 332.3 |  |  | 5.9 |  |  | 347.1 |  |  | 6.7 |
Other Hardware | 578.8 |  |  | 10.2 |  |  | 578.6 |  |  | 11.2 |
Total Hardware | 4,114.9 |  |  | 72.5 |  |  | 3,744.3 |  |  | 72.0 |
Software(1) | 1,054.9 |  |  | 18.6 |  |  | 948.3 |  |  | 18.2 |
Services(1) | 480.5 |  |  | 8.5 |  |  | 479.3 |  |  | 9.2 |
Other(2) | 29.5 |  |  | 0.4 |  |  | 27.2 |  |  | 0.6 |
Total Net sales | $ | 5,679.8 |  |  | 100.0 | % |  | $ | 5,199.1 |  |  | 100.0 | %
(1)Certain software and services revenues are recorded on a net basis as the Company is acting as an agent in the transaction. As a result, the category percentage of net revenues is not representative of the category percentage of gross profits.
(2)Includes items such as delivery charges to customers.

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- 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/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-21 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name 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