Finance costs and unwinding of obligations (Details) - USD ($) $ in Millions |
6 Months Ended | 12 Months Ended | |
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
|
| Disclosure of finance costs and unwinding of obligations [Abstract] | |||
| Finance costs - borrowings | $ 61 | $ 60 | |
| Finance costs - leases | 9 | 8 | $ 18 |
| Finance costs - joint venture loan restructure loss | 40 | 0 | |
| Unwinding of obligations | 18 | 17 | |
| Finance costs and unwinding of obligations | $ 128 | $ 85 | |
| X | ||||||||||
- Definition Disclosure of finance costs and unwinding of obligations [Abstract] No definition available.
|
| X | ||||||||||
- Definition Finance Costs, Unwinding Of Obligations, And Cash Repatriation Fee No definition available.
|
| X | ||||||||||
- Definition Finance, Fee Amortisation, Interest And Other Costs No definition available.
|
| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The loss recognised in the statement of comprehensive income arising from the derecognition of financial assets measured at amortised cost. [Refer: Financial assets at amortised cost] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|