CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net sales	$ 26,210,511	$ 25,441,131	$ 23,862,934
Cost of sales	24,593,731	23,778,404	22,303,231
Restructuring charges	99,005	66,845	38,758
Gross profit	1,517,775	1,595,882	1,520,945
Selling, general and administrative expenses	953,077	1,019,399	937,339
Intangible amortization	74,396	78,640	81,396
Restructuring charges	14,308	23,846	10,637
Interest and other, net	183,454	122,823	99,532
Other charges (income), net	110,414	(169,719)	21,193
Income before income taxes	182,126	520,893	370,848
Provision for income taxes	88,727	92,359	51,284
Net income	$ 93,399	$ 428,534	$ 319,564
Earnings per share:
Basic (in dollars per share)	$ 0.18	$ 0.81	$ 0.59
Diluted (in dollars per share)	$ 0.18	$ 0.80	$ 0.59
Weighted-average shares used in computing per share amounts:
Basic (in shares)	526,519	529,782	540,503
Diluted (in shares)	530,070	536,598	546,220