Net Debt - Summary of Maturity Profile of Financial Liabilities Based on the Contractual Amounts (Parenthetical) (Detail) - USD ($) $ in Millions |
Jun. 30, 2025 |
Jun. 30, 2024 |
|---|---|---|
| Disclosure of financial liabilities [line items] | ||
| Input taxes | $ 90 | $ 101 |
| Lease liabilities due for payment | 3,993 | 4,200 |
| Later than ten years [member] | ||
| Disclosure of financial liabilities [line items] | ||
| Lease liabilities due for payment | $ 820 | $ 738 |