Earnings Per Share - Computation Of Basic Earnings And Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share Reconciliation [Abstract]
Net income	$ 280	$ 402
Weighted average number of shares outstanding, basic (in shares)	266	272
Dilutive potential common shares related to stock award plans (in shares)	2	2
Weighted-average common stock outstanding - diluted (in shares)	268	274
Basic (in dollars per share)	$ 1.05	$ 1.48
Diluted (in dollars per share)	$ 1.04	$ 1.47