Other income, net - Schedule of Components of Other Income, Net (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Other Income and Expenses [Abstract] | ||||
| Foreign currency transaction (gain) loss | $ (3) | $ (32) | $ (10) | $ 5 |
| Income related to equity method investments | (51) | (39) | (109) | (77) |
| Non-service components of retirement benefit cost (income) | (16) | (13) | (33) | (25) |
| Gain on disposal of assets and divestitures | (9) | (248) | (8) | (257) |
| Interest income | (2) | (2) | (7) | (5) |
| Gain on insurance recoveries | 0 | 0 | (20) | 0 |
| Other items, net | 5 | 6 | 4 | 0 |
| Total other income, net | $ (76) | $ (328) | $ (183) | $ (359) |
| X | ||||||||||
- Definition Gain (Loss) On Disposition Of Assets And Divestitures No definition available.
|
| X | ||||||||||
- Definition Other Nonoperating Income (Expense), Additional Items No definition available.
|
| X | ||||||||||
- Definition Amount, after tax, of realized and unrealized gain (loss) from foreign currency transaction. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of income (loss) for proportionate share of equity method investee's income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of excess (deficiency) of insurance recovery over the loss incurred from an insured event. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of interest income (expense) classified as nonoperating. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of expense (reversal of expense) for net periodic benefit cost components, excluding service cost component, of defined benefit plan. Amount includes, but is not limited to, interest cost, expected (return) loss on plan asset, amortization of prior service cost (credit), amortization of (gain) loss, amortization of transition (asset) obligation, settlement (gain) loss, curtailment (gain) loss and certain termination benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|