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v3.22.4

Segment Information - Disaggregation of Revenue (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disaggregation of Revenue [Line Items] |  |  |
Net sales | $ 23,748.7 | $ 20,820.8 | $ 18,467.5
Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 10,350.1 | 8,179.7 | 6,846.0
Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,938.9 | 1,870.1 | 1,397.1
Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 8,551.3 | 8,183.6 | 8,137.7
Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 2,908.4 | 2,587.4 | 2,086.7
Transferred at a point in time where CDW is principal |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 21,016.1 | 18,990.0 | 16,754.9
Transferred at a point in time where CDW is principal | Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 8,971.4 | 7,332.3 | 6,140.7
Transferred at a point in time where CDW is principal | Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,751.1 | 1,734.7 | 1,301.3
Transferred at a point in time where CDW is principal | Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 7,717.1 | 7,634.3 | 7,477.4
Transferred at a point in time where CDW is principal | Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 2,576.5 | 2,288.7 | 1,835.5
Transferred at a point in time where CDW is agent |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,414.0 | 1,049.6 | 896.0
Transferred at a point in time where CDW is agent | Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 749.3 | 517.5 | 457.4
Transferred at a point in time where CDW is agent | Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 140.1 | 112.3 | 84.5
Transferred at a point in time where CDW is agent | Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 426.9 | 336.6 | 292.5
Transferred at a point in time where CDW is agent | Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 97.7 | 83.2 | 61.6
Transferred over time where CDW is principal |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,318.6 | 781.2 | 816.6
Transferred over time where CDW is principal | Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 629.4 | 329.9 | 247.9
Transferred over time where CDW is principal | Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 47.7 | 23.1 | 11.3
Transferred over time where CDW is principal | Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 407.3 | 212.7 | 367.8
Transferred over time where CDW is principal | Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 234.2 | 215.5 | 189.6
Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 10,350.1 | 8,179.7 | 6,846.0
Corporate | Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 10,350.1 | 8,179.7 | 6,846.0
Corporate | Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Corporate | Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Corporate | Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,938.9 | 1,870.1 | 1,397.1
Small Business | Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Small Business | Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,938.9 | 1,870.1 | 1,397.1
Small Business | Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Small Business | Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Government |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 2,574.3 | 2,155.6 | 2,978.5
Government | Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Government | Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Government | Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 2,574.3 | 2,155.6 | 2,978.5
Government | Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Education |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 3,621.4 | 4,108.7 | 3,458.1
Education | Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Education | Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Education | Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 3,621.4 | 4,108.7 | 3,458.1
Education | Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Healthcare |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 2,355.6 | 1,919.3 | 1,701.1
Healthcare | Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Healthcare | Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Healthcare | Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 2,355.6 | 1,919.3 | 1,701.1
Healthcare | Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 2,908.4 | 2,587.4 | 2,086.7
Other | Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Other | Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Other | Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Other | Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 2,908.4 | 2,587.4 | 2,086.7
Hardware |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 18,091.0 | 16,769.6 | 14,833.4
Hardware | Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 7,561.0 | 6,427.9 | 5,289.2
Hardware | Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,610.7 | 1,587.9 | 1,156.1
Hardware | Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 6,763.9 | 6,827.1 | 6,844.0
Hardware | Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 2,155.4 | 1,926.7 | 1,544.1
Software |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 3,684.9 | 2,802.4 | 2,581.0
Software | Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,781.5 | 1,172.4 | 1,088.3
Software | Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 232.9 | 211.0 | 189.3
Software | Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,196.9 | 1,017.3 | 982.8
Software | Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 473.6 | 401.7 | 320.6
Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,842.0 | 1,126.1 | 913.9
Services | Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 929.3 | 510.1 | 400.8
Services | Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 73.8 | 49.1 | 31.5
Services | Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 570.7 | 321.5 | 269.8
Services | Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 268.2 | 245.4 | 211.8
Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 130.8 | 122.7 | 139.2
Other | Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 78.3 | 69.3 | 67.7
Other | Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 21.5 | 22.1 | 20.2
Other | Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 19.8 | 17.7 | 41.1
Other | Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 11.2 | 13.6 | 10.2
United States |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 20,828.6 | 18,238.8 | 16,379.2
United States | Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 10,321.2 | 8,165.4 | 6,823.6
United States | Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,934.8 | 1,870.1 | 1,397.1
United States | Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 8,550.8 | 8,183.6 | 8,137.7
United States | Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 21.8 | 19.7 | 20.8
Rest of World |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 2,920.1 | 2,582.0 | 2,088.3
Rest of World | Operating Segments | Corporate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 28.9 | 14.3 | 22.4
Rest of World | Operating Segments | Small Business |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 4.1 | 0.0 | 0.0
Rest of World | Operating Segments | Public |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 0.5 | 0.0 | 0.0
Rest of World | Operating Segments | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | $ 2,886.6 | $ 2,567.7 | $ 2,065.9

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