Earnings Per Share (Tables)

12 Months Ended

Mar. 31, 2021

Earnings Per Share Reconciliation [Abstract]

Computation Of Basic Earnings And Diluted Earnings Per Share

	Year Ended March 31,
(In millions, except per share amounts)	2021		2020		2019
Net income	$	837	$	3,039	$	1,019
Shares used to compute earnings per share:
Weighted-average common stock outstanding — basic	289		293		303
Dilutive potential common shares related to stock award plans and from assumed exercise of stock options	3		2		3
Weighted-average common stock outstanding — diluted	292		295		306
Earnings per share:
Basic	$	2.90	$	10.37	$	3.36
Diluted	$	2.87	$	10.30	$	3.33