Segment Information - Financial Information about Reportable Operating Segments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Total net sales	$ 2,144,051	$ 1,685,466
Total costs of goods sold	1,818,715	1,436,994
Gross profit	325,336	248,472
Operating expenses:
Selling and administrative expenses	268,863	191,063
Severance and restructuring expenses	2,144	370
Acquisition and integration related expenses	1,466
Earnings from operations	52,863	57,039
Products [Member]
Segment Reporting Information [Line Items]
Total net sales	1,848,316	1,466,672
Total costs of goods sold	1,670,238	1,337,308
Services [Member]
Segment Reporting Information [Line Items]
Total net sales	295,735	218,794
Total costs of goods sold	148,477	99,686
North America Segment [Member]
Segment Reporting Information [Line Items]
Total net sales	1,674,381	1,242,441
Total costs of goods sold	1,417,453	1,059,834
Gross profit	256,928	182,607
Operating expenses:
Selling and administrative expenses	211,203	136,950
Severance and restructuring expenses	2,122	331
Acquisition and integration related expenses	1,262
Earnings from operations	42,341	45,326
North America Segment [Member] | Products [Member]
Segment Reporting Information [Line Items]
Total net sales	1,433,649	1,070,416
Total costs of goods sold	1,288,197	974,701
North America Segment [Member] | Services [Member]
Segment Reporting Information [Line Items]
Total net sales	240,732	172,025
Total costs of goods sold	129,256	85,133
EMEA Segment [Member]
Segment Reporting Information [Line Items]
Total net sales	418,886	390,175
Total costs of goods sold	360,112	333,192
Gross profit	58,774	56,983
Operating expenses:
Selling and administrative expenses	50,244	47,145
Severance and restructuring expenses	6	(85)
Acquisition and integration related expenses	204
Earnings from operations	8,320	9,923
EMEA Segment [Member] | Products [Member]
Segment Reporting Information [Line Items]
Total net sales	376,051	354,673
Total costs of goods sold	345,749	324,038
EMEA Segment [Member] | Services [Member]
Segment Reporting Information [Line Items]
Total net sales	42,835	35,502
Total costs of goods sold	14,363	9,154
APAC Segment [Member]
Segment Reporting Information [Line Items]
Total net sales	50,784	52,850
Total costs of goods sold	41,150	43,968
Gross profit	9,634	8,882
Operating expenses:
Selling and administrative expenses	7,416	6,968
Severance and restructuring expenses	16	124
Earnings from operations	2,202	1,790
APAC Segment [Member] | Products [Member]
Segment Reporting Information [Line Items]
Total net sales	38,616	41,583
Total costs of goods sold	36,292	38,569
APAC Segment [Member] | Services [Member]
Segment Reporting Information [Line Items]
Total net sales	12,168	11,267
Total costs of goods sold	$ 4,858	$ 5,399