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Share-based Compensation Arrangement By Share-based Payment Award, Extension of Expiration Period

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Amount of cost to be recognized for option under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The highest quantity of shares an employee can purchase under the plan per period.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Share-Based Compensation (Narrative) (Details) $ in Millions		1 Months Ended	12 Months Ended
	May 31, 2014 shares	Jun. 30, 2014 shares	Mar. 31, 2026 USD ($) shares	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023	Jun. 23, 2020 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares awarded, per employee, annual (in shares)	1,000,000.0	2,500,000
Extension of plan term		10 years
Share-based compensation expense, options, not yet recognized \| $			$ 2.4
Number of shares available for issuance under plan (in shares)			1,400,000
Options exercised, intrinsic value \| $			$ 2.1	$ 9.3	$ 10.0
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, not yet recognized, period for recognition			1 year 7 months 6 days
Award vesting period			3 years
Award exercisability period, from date of grant (not greater than)			10 years
Restricted Stock Units (RSUs) & Performance Stock Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, not yet recognized, period for recognition			1 year 9 months 18 days
Share-based payment arrangement, nonvested award, excluding option, cost not yet recognized, amount \| $			$ 11.7
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Restricted Stock Units (RSUs) \| Share-Based Payment Arrangement, Nonemployee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year	1 year	1 year	1 year
Restricted Stock Units (RSUs) \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units, conversion ratio for securities into which each RSU may be converted			1
2005 Long-term Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for grant (in shares)	5,000,000.0
Number of additional shares authorized under plan (in shares)		1,800,000
2020 Long-term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance (in shares)							2,827,210
Number of new shares for future issuance under 2020 Long-Term Incentive Plans (in shares)							2,000,000
Number of unissued shares reserved for 2020 Long-Term Incentive Plans (in shares)							827,210