Finance costs (Tables)

12 Months Ended

Dec. 31, 2018

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Summary of Financial Income and Expenses

	2018 $m			2017 Restated $m			2016 Restated $m
Financial income
Interest income on deposits		2			1			3
Interest income on loans and receivables		3			3			3
		5			4			6
Financial expenses
Interest expense on borrowings		66			62			71
Finance charge payable under finance leases		20			20			20
Capitalised interest		(5	)		(6	)		(5	)
Change in fair value of deferred and contingent purchase consideration		5			—			—
		86			76			86