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Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Sep. 30, 2025
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income | The following table presents the changes in Accumulated OCI (“AOCI”) during the periods presented below:
| Three Months Ended September 30, 2025 |  | Six Months Ended September 30, 2025
| Post-retirement plans | Derivatives designated as cash flow hedges | Total |  | Post-retirement plans | Derivatives designated as cash flow hedges | Total
Beginning of period | $ | (28) |  | $ | (2) |  | $ | (30) |  |  | $ | (28) |  | $ | (1) |  | $ | (29) |
Amounts reclassified from AOCI to earnings, before income taxes | 1 |  | (1) |  | — |  |  | 1 |  | (2) |  | (1) |
Income taxes | — |  | — |  | — |  |  | — |  | — |  | — |
Amounts reclassified from AOCI to earnings, net of income taxes(1) | 1 |  | (1) |  | — |  |  | 1 |  | (2) |  | (1) |
Current-period OCI, net of income taxes | 1 |  | (1) |  | — |  |  | 1 |  | (2) |  | (1) |
End of period | $ | (27) |  | $ | (3) |  | $ | (30) |  |  | $ | (27) |  | $ | (3) |  | $ | (30) |
(1) The reclassifications from accumulated OCI to net income are included in interest expense, net in the Condensed Consolidated Statements of Operations.
| Three Months Ended September 30, 2024 |  | Six Months Ended September 30, 2024
| Post-retirement plans | Derivatives designated as cash flow hedges | Total |  | Post-retirement plans | Derivatives designated as cash flow hedges | Total
Beginning of period | $ | 2 |  | $ | 6 |  | $ | 8 |  |  | $ | 2 |  | $ | 8 |  | $ | 10 |
OCI, before reclassifications and income taxes | — |  | (8) |  | (8) |  |  | — |  | (7) |  | (7) |
Income taxes | — |  | 2 |  | 2 |  |  | — |  | 2 |  | 2 |
OCI before reclassifications, net of income taxes | — |  | (6) |  | (6) |  |  | — |  | (5) |  | (5) |
Amounts reclassified from AOCI to earnings, before income taxes | — |  | (3) |  | (3) |  |  | — |  | (7) |  | (7) |
Income taxes | — |  | 1 |  | 1 |  |  | — |  | 2 |  | 2 |
Amounts reclassified from AOCI to earnings, net of income taxes(2) | — |  | (2) |  | (2) |  |  | — |  | (5) |  | (5) |
Current-period OCI, net of income taxes | — |  | (8) |  | (8) |  |  | — |  | (10) |  | (10) |
End of period | $ | 2 |  | $ | (2) |  | $ | — |  |  | $ | 2 |  | $ | (2) |  | $ | — |
(2) The reclassifications from accumulated OCI to net income are included in interest expense, net in the Condensed 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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