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Segment Information - Summary of Revenue Disaggregated by Reportable Operating Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Disaggregation of revenue	$ 2,266,286	$ 2,534,354	$ 6,939,829	$ 7,928,581
Gross revenue recognition (Principal)
Segment Reporting Information [Line Items]
Disaggregation of revenue	2,112,118	2,395,737	6,463,170	7,495,542
Net revenue recognition (Agent)
Segment Reporting Information [Line Items]
Disaggregation of revenue	154,168	138,617	476,659	433,039
North America
Segment Reporting Information [Line Items]
Disaggregation of revenue	1,860,872	2,099,837	5,592,002	6,411,786
North America | Gross revenue recognition (Principal)
Segment Reporting Information [Line Items]
Disaggregation of revenue	1,738,705	1,990,277	5,231,815	6,087,854
North America | Net revenue recognition (Agent)
Segment Reporting Information [Line Items]
Disaggregation of revenue	122,167	109,560	360,187	323,932
EMEA
Segment Reporting Information [Line Items]
Disaggregation of revenue	354,396	379,574	1,173,126	1,337,338
EMEA | Gross revenue recognition (Principal)
Segment Reporting Information [Line Items]
Disaggregation of revenue	330,505	358,697	1,083,933	1,254,980
EMEA | Net revenue recognition (Agent)
Segment Reporting Information [Line Items]
Disaggregation of revenue	23,891	20,877	89,193	82,358
APAC
Segment Reporting Information [Line Items]
Disaggregation of revenue	51,018	54,943	174,701	179,457
APAC | Gross revenue recognition (Principal)
Segment Reporting Information [Line Items]
Disaggregation of revenue	42,908	46,763	147,422	152,708
APAC | Net revenue recognition (Agent)
Segment Reporting Information [Line Items]
Disaggregation of revenue	8,110	8,180	27,279	26,749
Large Enterprise / Corporate
Segment Reporting Information [Line Items]
Disaggregation of revenue	1,603,592	1,793,654	4,865,834	5,543,523
Large Enterprise / Corporate | North America
Segment Reporting Information [Line Items]
Disaggregation of revenue	1,311,849	1,473,014	3,927,258	4,509,731
Large Enterprise / Corporate | EMEA
Segment Reporting Information [Line Items]
Disaggregation of revenue	270,355	295,565	868,937	955,858
Large Enterprise / Corporate | APAC
Segment Reporting Information [Line Items]
Disaggregation of revenue	21,388	25,075	69,639	77,934
Commercial
Segment Reporting Information [Line Items]
Disaggregation of revenue	365,792	454,546	1,141,129	1,414,523
Commercial | North America
Segment Reporting Information [Line Items]
Disaggregation of revenue	342,585	424,600	1,074,360	1,314,733
Commercial | EMEA
Segment Reporting Information [Line Items]
Disaggregation of revenue	4,340	11,898	12,739	49,631
Commercial | APAC
Segment Reporting Information [Line Items]
Disaggregation of revenue	18,867	18,048	54,030	50,159
Public Sector
Segment Reporting Information [Line Items]
Disaggregation of revenue	296,902	286,154	932,866	970,535
Public Sector | North America
Segment Reporting Information [Line Items]
Disaggregation of revenue	206,438	202,223	590,384	587,322
Public Sector | EMEA
Segment Reporting Information [Line Items]
Disaggregation of revenue	79,701	72,111	291,450	331,849
Public Sector | APAC
Segment Reporting Information [Line Items]
Disaggregation of revenue	10,763	11,820	51,032	51,364
Hardware
Segment Reporting Information [Line Items]
Disaggregation of revenue	1,301,155	1,572,275	3,940,273	4,976,979
Hardware | North America
Segment Reporting Information [Line Items]
Disaggregation of revenue	1,153,722	1,404,207	3,474,488	4,415,000
Hardware | EMEA
Segment Reporting Information [Line Items]
Disaggregation of revenue	136,567	151,505	431,677	517,512
Hardware | APAC
Segment Reporting Information [Line Items]
Disaggregation of revenue	10,866	16,563	34,108	44,467
Software
Segment Reporting Information [Line Items]
Disaggregation of revenue	588,999	596,922	1,863,135	1,851,747
Software | North America
Segment Reporting Information [Line Items]
Disaggregation of revenue	409,139	396,921	1,221,263	1,115,475
Software | EMEA
Segment Reporting Information [Line Items]
Disaggregation of revenue	163,918	184,361	574,539	669,760
Software | APAC
Segment Reporting Information [Line Items]
Disaggregation of revenue	15,942	15,640	67,333	66,512
Services
Segment Reporting Information [Line Items]
Disaggregation of revenue	376,132	365,157	1,136,421	1,099,855
Services | North America
Segment Reporting Information [Line Items]
Disaggregation of revenue	298,011	298,709	896,251	881,311
Services | EMEA
Segment Reporting Information [Line Items]
Disaggregation of revenue	53,911	43,708	166,910	150,066
Services | APAC
Segment Reporting Information [Line Items]
Disaggregation of revenue	$ 24,210	$ 22,740	$ 73,260	$ 68,478

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