Stock Repurchase Activity (Details) - USD ($)	3 Months Ended	9 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Nov. 30, 2021	Mar. 31, 2021
Equity [Abstract]
Stock repurchase program, authorized amount			$ 4,000,000,000
Repurchased shares under authorization (in shares)	2,000,000	2,000,000
Repurchased shares under authorization, value	$ 166,000,000	$ 166,000,000
Stock repurchase program, remaining authorized repurchase amount	$ 3,830,000,000	$ 3,830,000,000
Treasury stock (in shares)	20,768,248	20,768,248		21,900,970