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Investments and Fair Value Measurements (Tables) | 12 Months Ended
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Mar. 31, 2026
Fair Value Disclosures [Abstract] |
Schedule of Investments in Other Long Term Assets | Our investments related to unconsolidated entities included in other long term assets of the Company’s consolidated balance sheets at March 31 were:
Investments | 2026 |  | 2025
Equity method investments | $ | 184 |  |  | $ | 5 |
Other investments | 160 |  |  | 85 |
Total Investments | $ | 344 |  |  | $ | 90 |
Schedule of Recurring Fair Value Measurements | The financial instruments measured at fair value on a recurring basis in the accompanying consolidated balance sheets consist of the following:
| March 31, 2026
| Level 1 |  | Level 2 |  |  |  | Total
Assets: |  |  |  |  |  |  |
Money market funds | $ | 307 |  |  | $ | — |  |  |  |  | $ | 307 |
Long term deferred compensation plan asset (2) | 40 |  |  | — |  |  |  |  | 40 |
Total Assets | $ | 347 |  |  | $ | — |  |  |  |  | $ | 347 |
Liabilities: |  |  |  |  |  |  |
Current derivative instruments (1) | — |  |  | 1 |  |  |  |  | 1 |
Long term deferred compensation plan liability (2) | 40 |  |  | — |  |  |  |  | 40 |
Total Liabilities | $ | 40 |  |  | $ | 1 |  |  |  |  | $ | 41 |
| March 31, 2025
| Level 1 |  | Level 2 |  |  |  | Total
Assets: |  |  |  |  |  |  |
Money market funds | $ | 802 |  |  | $ | — |  |  |  |  | $ | 802 |
Current derivative instruments (1) | — |  |  | 1 |  |  |  |  | 1 |
Long term deferred compensation plan asset (2) | $ | 35 |  |  | $ | — |  |  |  |  | $ | 35 |
Total Assets | $ | 837 |  |  | $ | 1 |  |  |  |  | $ | 838 |
Liabilities: |  |  |  |  |  |  |
Current derivative instruments (1) | $ | — |  |  | $ | 1 |  |  |  |  | $ | 1 |
Long-term derivative instruments (1) | — |  |  | 2 |  |  |  |  | 2 |
Long term deferred compensation plan liability (2) | 35 |  |  | — |  |  |  |  | 35 |
Total liabilities | $ | 35 |  |  | $ | 3 |  |  |  |  | $ | 38 |
(1) The Company’s interest rate swaps are considered over-the-counter derivatives which are recorded in the consolidated balance sheet on a gross basis at estimated fair value. Fair value is estimated based on the present value of future cash flows using a model-derived valuation that uses Level 2 observable inputs such as interest rate yield curves. See Note 11, “Derivatives,” to the consolidated financial statements for further information on the Company’s derivative instruments designated as cash flow hedges. (2) Investments in this category consist primarily of mutual funds whose fair values are determined by reference to the quoted market price per unit in active markets multiplied by the number of units held without consideration of transaction costs. These assets are recorded in other long-term assets and represent investments held in a consolidated trust to fund the Company's non-qualified deferred compensation plan, which is recorded in other long-term liabilities on our consolidated balance sheets.
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments | The carrying amount and estimated fair value of debt consists of the following:
| March 31, 2026 |  | March 31, 2025
| Carrying Amount |  | Estimated Fair Value |  | Carrying Amount |  | Estimated Fair Value
Term Loan A-1 | $ | 714 |  |  | $ | 712 |  |  | $ | 1,526 |  |  | $ | 1,521 |
Term Loan A-2 | 750 |  |  | 743 |  |  | — |  |  | — |
3.875% Senior Notes due 2028 | 700 |  |  | 680 |  |  | 700 |  |  | 666 |
4.000% Senior Notes due 2029 | 500 |  |  | 484 |  |  | 500 |  |  | 471 |
5.950% Senior Notes due 2033 | 650 |  |  | 663 |  |  | 650 |  |  | 651 |
5.950% Senior Notes due 2035 | 650 |  |  | 655 |  |  | 650 |  |  | 645 |
Total Debt | $ | 3,964 |  |  | $ | 3,937 |  |  | $ | 4,026 |  |  | $ | 3,954 |

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