CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net sales	$ 6,720,000	$ 6,461,000	$ 17,858,000	$ 18,725,000
Cost of sales	6,212,000	6,017,000	16,618,000	17,578,000
Restructuring charges	29,000	14,000	63,000	175,000
Gross profit	479,000	430,000	1,177,000	972,000
Selling, general and administrative expenses	222,000	218,000	606,000	633,000
Intangible amortization	16,000	16,000	47,000	49,000
Restructuring charges	1,000	1,000	12,000	24,000
Interest and other, net	7,000	50,000	58,000	153,000
Income before income taxes	233,000	145,000	454,000	113,000
Provision for income taxes	25,000	34,000	81,000	74,000
Net income	$ 208,000	$ 111,000	$ 373,000	$ 39,000
Earnings per share:
Basic (in dollars per share)	$ 0.42	$ 0.22	$ 0.75	$ 0.08
Diluted (in dollars per share)	$ 0.41	$ 0.22	$ 0.74	$ 0.08
Weighted-average shares used in computing per share amounts:
Basic (in shares)	500,000	507,000	500,000	511,000
Diluted (in shares)	508,000	510,000	505,000	515,000