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Capitalised finance leases (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure Of Capitalised Finance Leases [Abstract] |
Summary of capitalised finance leases |
|  |  |  |  | 2018 |  |  | 2017 |
| Note |  | US$m |  | US$m |
Present value of minimum lease payments |  |  |  |  |  |  |  |  |
Total minimum lease payments |  |  |  |  | 45 |  |  | 57 |
Effect of discounting |  |  |  |  | (1 | ) |  | (4 | )
Total |  | 22 |  |  | 44 |  |  | 53 |
Payments under capitalised finance leases |  |  |  |  |  |  |  |  |
Due within 1 year |  |  |  |  | 5 |  |  | 4 |
Between 1 and 3 years |  |  |  |  | 10 |  |  | 14 |
Between 3 and 5 years |  |  |  |  | 18 |  |  | 28 |
More than 5 years |  |  |  |  | 12 |  |  | 11 |
Total |  |  |  |  | 45 |  |  | 57 |

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- Definition Disclosure of capitalised finance leases. + References No definition available. + Details
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- Definition Disclosure of maturity analysis of finance lease payments payable. + References No definition available. + Details
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