Segment and Geographic Information - Net Sales by Offering for North America, EMEA and APAC (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue from External Customer [Line Items]
Total net sales	$ 9,175,840	$ 10,431,191	$ 9,436,113
Gross revenue recognition (Principal)
Revenue from External Customer [Line Items]
Total net sales	8,510,876	9,838,606	8,914,426
Net revenue recognition (Agent)
Revenue from External Customer [Line Items]
Total net sales	664,964	592,585	521,687
Large Enterprise / Corporate
Revenue from External Customer [Line Items]
Total net sales	6,481,762	7,341,965	6,670,312
Commercial
Revenue from External Customer [Line Items]
Total net sales	1,511,662	1,840,704	1,622,666
Public Sector
Revenue from External Customer [Line Items]
Total net sales	1,182,416	1,248,522	1,143,135
North America
Revenue from External Customer [Line Items]
Total net sales	7,382,354	8,484,392	7,520,323
North America | Gross revenue recognition (Principal)
Revenue from External Customer [Line Items]
Total net sales	6,869,025	8,035,218	7,138,852
North America | Net revenue recognition (Agent)
Revenue from External Customer [Line Items]
Total net sales	513,329	449,174	381,471
North America | Large Enterprise / Corporate
Revenue from External Customer [Line Items]
Total net sales	5,210,365	5,990,203	5,356,915
North America | Commercial
Revenue from External Customer [Line Items]
Total net sales	1,418,680	1,710,340	1,495,311
North America | Public Sector
Revenue from External Customer [Line Items]
Total net sales	753,309	783,849	668,097
EMEA
Revenue from External Customer [Line Items]
Total net sales	1,563,654	1,712,521	1,704,051
EMEA | Gross revenue recognition (Principal)
Revenue from External Customer [Line Items]
Total net sales	1,447,082	1,603,600	1,591,156
EMEA | Net revenue recognition (Agent)
Revenue from External Customer [Line Items]
Total net sales	116,572	108,921	112,895
EMEA | Large Enterprise / Corporate
Revenue from External Customer [Line Items]
Total net sales	1,176,415	1,249,286	1,219,601
EMEA | Commercial
Revenue from External Customer [Line Items]
Total net sales	22,103	61,873	65,728
EMEA | Public Sector
Revenue from External Customer [Line Items]
Total net sales	365,136	401,362	418,722
APAC
Revenue from External Customer [Line Items]
Total net sales	229,832	234,278	211,739
APAC | Gross revenue recognition (Principal)
Revenue from External Customer [Line Items]
Total net sales	194,769	199,788	184,418
APAC | Net revenue recognition (Agent)
Revenue from External Customer [Line Items]
Total net sales	35,063	34,490	27,321
APAC | Large Enterprise / Corporate
Revenue from External Customer [Line Items]
Total net sales	94,982	102,476	93,796
APAC | Commercial
Revenue from External Customer [Line Items]
Total net sales	70,879	68,491	61,627
APAC | Public Sector
Revenue from External Customer [Line Items]
Total net sales	63,971	63,311	56,316
Hardware
Revenue from External Customer [Line Items]
Total net sales	5,088,937	6,450,895	5,889,510
Hardware | North America
Revenue from External Customer [Line Items]
Total net sales	4,498,466	5,738,586	5,163,225
Hardware | EMEA
Revenue from External Customer [Line Items]
Total net sales	546,621	654,381	676,815
Hardware | APAC
Revenue from External Customer [Line Items]
Total net sales	43,850	57,928	49,470
Software
Revenue from External Customer [Line Items]
Total net sales	2,542,451	2,496,892	2,230,617
Software | North America
Revenue from External Customer [Line Items]
Total net sales	1,669,046	1,552,715	1,315,412
Software | EMEA
Revenue from External Customer [Line Items]
Total net sales	784,717	857,516	825,361
Software | APAC
Revenue from External Customer [Line Items]
Total net sales	88,688	86,661	89,844
Services
Revenue from External Customer [Line Items]
Total net sales	1,544,452	1,483,404	1,315,986
Services | North America
Revenue from External Customer [Line Items]
Total net sales	1,214,842	1,193,091	1,041,686
Services | EMEA
Revenue from External Customer [Line Items]
Total net sales	232,316	200,624	201,875
Services | APAC
Revenue from External Customer [Line Items]
Total net sales	$ 97,294	$ 89,689	$ 72,425