Stock Repurchase Activity (Details) - shares	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Equity [Abstract]
Stock repurchase program, number of shares authorized remaining to be repurchased (in shares)	15,000,000.0
Repurchased shares under authorization (in shares)	0	0	0
Treasury stock (in shares)	10,950,485	13,065,588