SUMMARY OF ACCOUNTING POLICIES - Concentration of Credit Risk (Details) - USD ($) $ in Millions	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Continuing Operations
Allowance for doubtful accounts
Balance at Beginning of Year	$ 7	$ 12	$ 6
Charges (Recoveries) to Costs and Expenses	3	(1)	9
Deductions/Write-Offs	(2)	(4)	(3)
Balance at End of Year	$ 8	$ 7	$ 12
Ten largest customers \| Net sales \| Customer Concentration Risk
Allowance for doubtful accounts
Concentration risk percentage	45.00%	44.00%	37.00%
One Customer \| Accounts Receivable \| Customer Concentration Risk
Allowance for doubtful accounts
Concentration risk percentage	16.00%

Amount of allowance for credit loss on accounts receivable, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
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-Name Accounting Standards Codification
-Section S99
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of direct write-downs of accounts receivable charged against the allowance.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of expense (reversal of expense) for expected credit loss on accounts receivable.

+ References

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