v3.25.2
Loans and borrowings - Summary of Terms and Conditions of Outstanding Loans and Borrowings (Details)
$ in Millions
Jun. 30, 2025
USD ($)
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Carrying amount $ 1,913
Convertible notes (including embedded derivative)  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Carrying amount $ 1,479
Convertible notes (including embedded derivative) | Nominal interest rate  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Nominal interest rate 0.00%
SGD bank loan due 2025-2030  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Carrying amount $ 167
SGD bank loan due 2025-2030 | Bottom of range | Nominal interest rate  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Nominal interest rate 1.50%
SGD bank loan due 2025-2030 | Top of range | Nominal interest rate  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Nominal interest rate 2.10%
MYR bank loan due 2025-2028 | Bottom of range | Nominal interest rate  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Nominal interest rate 2.10%
MYR bank loan due 2025-2028 | Top of range | Nominal interest rate  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Nominal interest rate 3.60%
MYR COF bank loan due 2025-2028  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Carrying amount $ 14
MYR COF bank loan due 2025-2028 | Bottom of range | Nominal interest rate  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Nominal interest rate (2.00%)
MYR COF bank loan due 2025-2028 | Top of range | Nominal interest rate  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Nominal interest rate 1.30%
IDR bank loan due 2025-2028  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Carrying amount $ 27
IDR bank loan due 2025-2028 | Bottom of range | Nominal interest rate  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Nominal interest rate 3.00%
IDR bank loan due 2025-2028 | Top of range | Nominal interest rate  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Nominal interest rate 9.50%
THB COF bank loan due 2025-2025  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Carrying amount $ 45
THB COF bank loan due 2025-2025 | Nominal interest rate  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Nominal interest rate 7.00%
Lease liabilities  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Carrying amount $ 181
Lease liabilities | Bottom of range | Nominal interest rate  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Nominal interest rate 4.10%
Lease liabilities | Top of range | Nominal interest rate  
Disclosure Of Detailed Information Of Loans And Borrowings [Line Items]  
Nominal interest rate 12.50%