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Segment Information - Summary of Revenue Disaggregated by Reportable Operating Segments (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | $ 2,650,850 | $ 2,193,068
Hardware |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 1,673,588 | 1,315,025
Software |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 636,699 | 577,995
Services |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 340,563 | 300,048
Gross revenue recognition (Principal) |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 2,524,801 | 2,073,481
Net revenue recognition (Agent) |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 126,049 | 119,587
North America |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 2,064,505 | 1,654,781
North America | Hardware |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 1,451,319 | 1,109,489
North America | Software |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 341,547 | 308,738
North America | Services |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 271,639 | 236,554
North America | Gross revenue recognition (Principal) |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 1,970,921 | 1,569,641
North America | Net revenue recognition (Agent) |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 93,584 | 85,140
EMEA |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 531,433 | 478,836
EMEA | Hardware |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 210,623 | 195,971
EMEA | Software |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 272,402 | 234,423
EMEA | Services |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 48,408 | 48,442
EMEA | Gross revenue recognition (Principal) |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 506,862 | 450,977
EMEA | Net revenue recognition (Agent) |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 24,571 | 27,859
APAC |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 54,912 | 59,451
APAC | Hardware |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 11,646 | 9,565
APAC | Software |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 22,750 | 34,834
APAC | Services |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 20,516 | 15,052
APAC | Gross revenue recognition (Principal) |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 47,018 | 52,863
APAC | Net revenue recognition (Agent) |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 7,894 | 6,588
Large Enterprise / Corporate |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 1,814,062 | 1,499,579
Large Enterprise / Corporate | North America |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 1,438,729 | 1,171,428
Large Enterprise / Corporate | EMEA |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 353,904 | 309,075
Large Enterprise / Corporate | APAC |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 21,429 | 19,076
Commercial |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 474,239 | 377,245
Commercial | North America |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 441,159 | 344,045
Commercial | EMEA |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 18,421 | 20,533
Commercial | APAC |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 14,659 | 12,667
Public Sector |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 362,549 | 316,244
Public Sector | North America |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 184,617 | 139,308
Public Sector | EMEA |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | 159,108 | 149,228
Public Sector | APAC |  |
Segment Reporting Information [Line Items] |  |
Disaggregation of revenue | $ 18,824 | $ 27,708

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