CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Net sales	$ 6,619	$ 6,720	$ 19,190	$ 17,858
Cost of sales	6,128	6,241	17,762	16,681
Gross profit	491	479	1,428	1,177
Selling, general and administrative expenses	225	223	638	618
Intangible amortization	15	16	45	47
Operating income	251	240	745	512
Interest and other, net	8	7	(103)	58
Income before income taxes	243	233	848	454
Provision for income taxes	16	25	79	81
Net income	$ 227	$ 208	$ 769	$ 373
Earnings per share:
Basic (in dollars per share)	$ 0.48	$ 0.42	$ 1.60	$ 0.75
Diluted (in dollars per share)	$ 0.48	$ 0.41	$ 1.58	$ 0.74
Weighted-average shares used in computing per share amounts:
Basic (in shares)	469	500	481	500
Diluted (in shares)	474	508	487	505