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Fair Value Measurements - Schedule of Recurring Fair Value Measurements (Details) - Recurring Fair Value Measurements - USD ($) $ in Millions | Jun. 30, 2025 | Mar. 31, 2025
--- | --- | ---
Assets: |  |
Current derivative instruments |  | $ 1
Long-term deferred compensation plan asset | $ 43 | 35
Total Assets | 43 | 36
Liabilities: |  |
Current derivative instruments | 1 | 1
Long-term derivative instruments | 2 | 2
Long-term deferred compensation plan liability | 43 | 35
Total Liabilities | 46 | 38
Level 1 |  |
Assets: |  |
Current derivative instruments |  | 0
Long-term deferred compensation plan asset | 43 | 35
Total Assets | 43 | 35
Liabilities: |  |
Current derivative instruments | 0 | 0
Long-term derivative instruments | 0 | 0
Long-term deferred compensation plan liability | 43 | 35
Total Liabilities | 43 | 35
Level 2 |  |
Assets: |  |
Current derivative instruments |  | 1
Long-term deferred compensation plan asset | 0 | 0
Total Assets | 0 | 1
Liabilities: |  |
Current derivative instruments | 1 | 1
Long-term derivative instruments | 2 | 2
Long-term deferred compensation plan liability | 0 | 0
Total Liabilities | $ 3 | $ 3

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