Segment and Geographic Information - Net Sales by Offering for North America, EMEA and APAC (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue from External Customer [Line Items]
Total net sales	$ 10,431,191	$ 9,436,113	$ 8,340,579
Gross revenue recognition (Principal)
Revenue from External Customer [Line Items]
Total net sales	9,838,606	8,914,426	7,883,833
Net revenue recognition (Agent)
Revenue from External Customer [Line Items]
Total net sales	592,585	521,687	456,746
Large Enterprise / Corporate
Revenue from External Customer [Line Items]
Total net sales	7,341,965	6,670,312	5,671,332
Commercial
Revenue from External Customer [Line Items]
Total net sales	1,840,704	1,622,666	1,517,573
Public Sector
Revenue from External Customer [Line Items]
Total net sales	1,248,522	1,143,135	1,151,674
North America
Revenue from External Customer [Line Items]
Total net sales	8,484,392	7,520,323	6,615,032
North America | Gross revenue recognition (Principal)
Revenue from External Customer [Line Items]
Total net sales	8,035,218	7,138,852	6,284,948
North America | Net revenue recognition (Agent)
Revenue from External Customer [Line Items]
Total net sales	449,174	381,471	330,084
North America | Large Enterprise / Corporate
Revenue from External Customer [Line Items]
Total net sales	5,990,203	5,356,915	4,507,041
North America | Commercial
Revenue from External Customer [Line Items]
Total net sales	1,710,340	1,495,311	1,395,298
North America | Public Sector
Revenue from External Customer [Line Items]
Total net sales	783,849	668,097	712,693
EMEA
Revenue from External Customer [Line Items]
Total net sales	1,712,521	1,704,051	1,555,225
EMEA | Gross revenue recognition (Principal)
Revenue from External Customer [Line Items]
Total net sales	1,603,600	1,591,156	1,452,115
EMEA | Net revenue recognition (Agent)
Revenue from External Customer [Line Items]
Total net sales	108,921	112,895	103,110
EMEA | Large Enterprise / Corporate
Revenue from External Customer [Line Items]
Total net sales	1,249,286	1,219,601	1,101,557
EMEA | Commercial
Revenue from External Customer [Line Items]
Total net sales	61,873	65,728	61,535
EMEA | Public Sector
Revenue from External Customer [Line Items]
Total net sales	401,362	418,722	392,133
APAC
Revenue from External Customer [Line Items]
Total net sales	234,278	211,739	170,322
APAC | Gross revenue recognition (Principal)
Revenue from External Customer [Line Items]
Total net sales	199,788	184,418	146,770
APAC | Net revenue recognition (Agent)
Revenue from External Customer [Line Items]
Total net sales	34,490	27,321	23,552
APAC | Large Enterprise / Corporate
Revenue from External Customer [Line Items]
Total net sales	102,476	93,796	62,734
APAC | Commercial
Revenue from External Customer [Line Items]
Total net sales	68,491	61,627	60,740
APAC | Public Sector
Revenue from External Customer [Line Items]
Total net sales	63,311	56,316	46,848
Hardware
Revenue from External Customer [Line Items]
Total net sales	6,450,895	5,889,510	5,068,073
Hardware | North America
Revenue from External Customer [Line Items]
Total net sales	5,738,586	5,163,225	4,418,295
Hardware | EMEA
Revenue from External Customer [Line Items]
Total net sales	654,381	676,815	617,825
Hardware | APAC
Revenue from External Customer [Line Items]
Total net sales	57,928	49,470	31,953
Software
Revenue from External Customer [Line Items]
Total net sales	2,496,892	2,230,617	2,104,082
Software | North America
Revenue from External Customer [Line Items]
Total net sales	1,552,715	1,315,412	1,260,757
Software | EMEA
Revenue from External Customer [Line Items]
Total net sales	857,516	825,361	760,562
Software | APAC
Revenue from External Customer [Line Items]
Total net sales	86,661	89,844	82,763
Services
Revenue from External Customer [Line Items]
Total net sales	1,483,404	1,315,986	1,168,424
Services | North America
Revenue from External Customer [Line Items]
Total net sales	1,193,091	1,041,686	935,980
Services | EMEA
Revenue from External Customer [Line Items]
Total net sales	200,624	201,875	176,838
Services | APAC
Revenue from External Customer [Line Items]
Total net sales	$ 89,689	$ 72,425	$ 55,606