Share-based Payments - Monte Carlo Valuation Model Assumptions Used in Determining Fair Value of TSR Awards (Details) - Performance Stock Units [Member] - $ / shares	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Share-based Payments [Abstract]
Risk free interest rate	3.86%
Expected life in years		3 years
Expected volatility of MPA common stock	66.80%
Average correlation coefficient of peer companies	15.70%		0.00%
Expected dividend yield	0.00%	0.00%	0.00%
Minimum [Member]
Share-based Payments [Abstract]
Risk free interest rate		4.21%	4.32%
Expected life in years	8 months 12 days		2 months 12 days
Expected volatility of MPA common stock		59.80%	54.20%
Average correlation coefficient of peer companies		16.50%
Grant date fair value (in Dollars per share)	$ 7.33	$ 8.65	$ 3.57
Maximum [Member]
Share-based Payments [Abstract]
Risk free interest rate		4.45%	4.35%
Expected life in years	3 years		1 year 9 months 18 days
Expected volatility of MPA common stock		62.80%	55.10%
Average correlation coefficient of peer companies		17.40%
Grant date fair value (in Dollars per share)	$ 12.68	$ 8.88	$ 8.37

Rate of Average correlation coefficient of peer companies for awards under share-based payment arrangement.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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