Operating leases (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Summary of Future Minimum Lease Payments Under Non-cancellable Operating Leases

Future minimum lease payments under non-cancellable operating leases are as follows:

	2018 $m		2017 $m
Due within one year		56		56
One to two years		54		46
Two to three years		67		45
Three to four years		35		60
Four to five years		31		30
More than five years		266		297
		509		534