Employee Stock-Based Compensation (Fair Value Assumptions) (Details) - $ / shares	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Stock options
Employee Benefit Plan
Expected dividend rate			1.18%
Risk-free interest rate			1.99%
Expected volatility			34.00%
Expected term (years)			6 years 2 months 12 days
Weighted average grant date fair value per share (in dollars per share)			$ 25.88
Employee Stock Purchase Plans
Employee Benefit Plan
Expected dividend rate	1.61%	1.78%	1.03%
Risk-free interest rate	5.36%	3.86%	0.27%
Expected volatility	33.00%	46.00%	35.00%
Expected term (years)	6 months	6 months	6 months
Granted (in dollars per share)	$ 19.02	$ 16.32	$ 23.55
Weighted average grant date fair value per share (in dollars per share)	$ 19.02	$ 16.32	$ 23.55
PSUs
Employee Benefit Plan
Expected dividend rate	1.90%	1.46%	0.78%
Risk-free interest rate	3.83%	2.78%	0.31%
Expected volatility	41.00%	39.00%	37.00%
Expected term (years)	3 years	3 years	3 years
Granted (in dollars per share)	$ 67	$ 69	$ 124
Weighted average grant date fair value per share (in dollars per share)	$ 67	$ 69	$ 124