Investments and Fair Value Measurements - Schedule of Recurring Fair Value Measurements (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Mar. 31, 2026 |
|---|---|---|
| Assets: | ||
| Money market funds | $ 262 | $ 307 |
| Long-term deferred compensation plan asset | 44 | 40 |
| Total Assets | 306 | 347 |
| Liabilities: | ||
| Current derivative instruments | 0 | 1 |
| Long-term deferred compensation plan liability | 44 | 40 |
| Total Liabilities | 44 | 41 |
| Level 1 | ||
| Assets: | ||
| Money market funds | 262 | 307 |
| Long-term deferred compensation plan asset | 44 | 40 |
| Total Assets | 306 | 347 |
| Liabilities: | ||
| Current derivative instruments | 0 | 0 |
| Long-term deferred compensation plan liability | 44 | 40 |
| Total Liabilities | 44 | 40 |
| Level 2 | ||
| Assets: | ||
| Money market funds | 0 | 0 |
| Long-term deferred compensation plan asset | 0 | 0 |
| Total Assets | 0 | 0 |
| Liabilities: | ||
| Current derivative instruments | 0 | 1 |
| Long-term deferred compensation plan liability | 0 | 0 |
| Total Liabilities | $ 0 | $ 1 |
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- Definition Fair value portion of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer). No definition available.
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- Definition Carrying amount as of the balance sheet date of assets held under deferred compensation agreements. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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