Segment Information - Financial Information about Reportable Operating Segments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Total net sales	$ 2,193,068	$ 2,144,051
Total costs of goods sold	1,861,594	1,818,715
Gross profit	331,474	325,336
Operating expenses:
Selling and administrative expenses	271,190	268,863
Severance and restructuring expenses	(6,740)	2,144
Acquisition and integration related expenses		1,466
Earnings from operations	67,024	52,863
Products [Member]
Segment Reporting Information [Line Items]
Total net sales	1,893,020	1,848,316
Total costs of goods sold	1,721,258	1,670,238
Services [Member]
Segment Reporting Information [Line Items]
Total net sales	300,048	295,735
Total costs of goods sold	140,336	148,477
North America Segment [Member]
Segment Reporting Information [Line Items]
Total net sales	1,654,781	1,674,381
Total costs of goods sold	1,401,292	1,417,453
Gross profit	253,489	256,928
Operating expenses:
Selling and administrative expenses	206,806	211,203
Severance and restructuring expenses	(7,238)	2,122
Acquisition and integration related expenses		1,262
Earnings from operations	53,921	42,341
North America Segment [Member] | Products [Member]
Segment Reporting Information [Line Items]
Total net sales	1,418,227	1,433,649
Total costs of goods sold	1,283,876	1,288,197
North America Segment [Member] | Services [Member]
Segment Reporting Information [Line Items]
Total net sales	236,554	240,732
Total costs of goods sold	117,416	129,256
EMEA Segment [Member]
Segment Reporting Information [Line Items]
Total net sales	478,836	418,886
Total costs of goods sold	412,801	360,112
Gross profit	66,035	58,774
Operating expenses:
Selling and administrative expenses	55,447	50,244
Severance and restructuring expenses	498	6
Acquisition and integration related expenses		204
Earnings from operations	10,090	8,320
EMEA Segment [Member] | Products [Member]
Segment Reporting Information [Line Items]
Total net sales	430,394	376,051
Total costs of goods sold	396,184	345,749
EMEA Segment [Member] | Services [Member]
Segment Reporting Information [Line Items]
Total net sales	48,442	42,835
Total costs of goods sold	16,617	14,363
APAC Segment [Member]
Segment Reporting Information [Line Items]
Total net sales	59,451	50,784
Total costs of goods sold	47,501	41,150
Gross profit	11,950	9,634
Operating expenses:
Selling and administrative expenses	8,937	7,416
Severance and restructuring expenses		16
Earnings from operations	3,013	2,202
APAC Segment [Member] | Products [Member]
Segment Reporting Information [Line Items]
Total net sales	44,399	38,616
Total costs of goods sold	41,198	36,292
APAC Segment [Member] | Services [Member]
Segment Reporting Information [Line Items]
Total net sales	15,052	12,168
Total costs of goods sold	$ 6,303	$ 4,858