Stock Repurchase Activity (Details) - USD ($)	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Nov. 30, 2021
Equity [Abstract]
Stock repurchase program, authorized amount				$ 4,000,000,000
Repurchased shares under authorization (in shares)	11,900,000	12,900,000	5,600,000
Repurchased shares under authorization, value	$ 988,900,000	$ 945,800,000	$ 425,600,000
Stock repurchase program, remaining authorized repurchase amount	$ 1,650,000,000
Common stock held in treasury (in shares)	41,142,968	32,345,809