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v3.25.1

Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Mar. 31, 2025
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income | The following table presents the changes in Accumulated OCI:
| Post-retirement plans | Derivatives designated as cash flow hedges | Total
Balance at March 31, 2022 | $ | 9 |  | $ | — |  | $ | 9 |
OCI, before reclassifications to earnings and income taxes | 15 |  | 15 |  | 30 |
Income taxes | (4) |  | (4) |  | (8) |
OCI before reclassifications to earnings, net of income taxes | 11 |  | 11 |  | 22 |
Amounts reclassified from AOCI to earnings, before income taxes | — |  | (1) |  | (1) |
Income taxes | — |  | — |  | — |
Amounts reclassified from AOCI to earnings, net of income taxes(1) | — |  | (1) |  | (1) |
Current-period OCI, net of income taxes | 11 |  | 10 |  | 21 |
Balance at March 31, 2023 | $ | 20 |  | $ | 10 |  | $ | 30 |
OCI, before reclassifications to earnings and income taxes | (21) |  | 12 |  | (9) |
Income taxes | 4 |  | (3) |  | 1 |
OCI before reclassifications to earnings, net of income taxes | (17) |  | 9 |  | (8) |
Amounts reclassified from AOCI to earnings, before income taxes | (2) |  | (15) |  | (17) |
Income taxes | 1 |  | 4 |  | 5 |
Amounts reclassified from AOCI to earnings, net of income taxes(1) | (1) |  | (11) |  | (12) |
Current-period OCI, net of income taxes | (18) |  | (2) |  | (20) |
Balance at March 31, 2024 | $ | 2 |  | $ | 8 |  | $ | 10 |
OCI, before reclassifications to earnings and income taxes | (42) |  | (2) |  | (44) |
Income taxes | 11 |  | 1 |  | 12 |
OCI before reclassifications to earnings, net of income taxes | (31) |  | (1) |  | (32) |
Amounts reclassified from AOCI to earnings, before income taxes (1) | 1 |  | (10) |  | (9) |
Income taxes | — |  | 2 |  | 2 |
Amounts reclassified from AOCI to earnings, net of income taxes | 1 |  | (8) |  | (7) |
Current-period OCI, net of income taxes | (30) |  | (9) |  | (39) |
Balance at March 31, 2025 | $ | (28) |  | $ | (1) |  | $ | (29) |
(1)The reclassifications from accumulated OCI to net income are included in interest expense, net in the Consolidated Statements of Operations.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481674/830-30-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481694/830-30-45-20 + Details
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