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Cash and cash equivalents
6 Months Ended
Jun. 30, 2022
Subclassifications of assets, liabilities and equities [abstract]  
Cash and cash equivalents
7. Cash and cash equivalents
Closing cash and cash equivalents less overdrafts for the purposes of the cash flow statement differs from cash and cash equivalents on the Group balance sheet as per the following reconciliation:
Closing cash and cash equivalents less overdrafts30 June
2022
31 December
2021
30 June
2021
US$mUS$mUS$m
Balance per Group balance sheet11,41212,80714,027
Bank overdrafts repayable on demand (unsecured)(3)(2)(4)
Balance per Group cash flow statement11,40912,80514,023