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Cash and cash equivalents (Tables)
 12 Months Ended
Dec. 31, 2019
Cash and cash equivalents [abstract]  
Summary of cash and cash equivalents

Note

2019
US$m

2018
US$m

Cash at bank and in hand
 
978

740

Money market funds and other cash equivalents
 
7,049

10,033

Balance per Group balance sheet
 
8,027

10,773

Bank overdrafts repayable on demand (unsecured)
22

—

(1
)
Cash and cash equivalents included in Assets held for sale
19

—

117

Balance per Group cash flow statement
 
8,027

10,889