Financial assets and liabilities - Maturity profile of the Business' borrowings (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Financial liabilities | ||
| Total borrowings | $ 4,373 | $ 4,451 |
| Deferred debt issue costs | (29) | (32) |
| Net borrowings | 4,344 | 4,419 |
| Within one year or on demand | ||
| Financial liabilities | ||
| Total borrowings | 131 | 118 |
| Between one and three years | ||
| Financial liabilities | ||
| Total borrowings | 1,236 | 1,269 |
| Between three and five years | ||
| Financial liabilities | ||
| Total borrowings | 2,961 | 1,722 |
| Greater than five years | ||
| Financial liabilities | ||
| Total borrowings | $ 45 | $ 1,342 |