Pension and Other Postretirement Benefits - Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions |
Jun. 30, 2025 |
Jun. 30, 2024 |
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| Pension benefits | ||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Actuarial losses (gains) | $ 197 | $ 169 |
| Postretirement benefits | ||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Actuarial losses (gains) | $ (27) | $ (30) |
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- Definition Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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