Taxation (Tables)

6 Months Ended

Jun. 30, 2020

Disclosure of income tax [Abstract]

Disclosure of income tax expense

		Six months	Six months	Year
		ended	ended	ended
		Jun	Jun	Dec
		2020	2019	2019
US Dollar million		Unaudited	Unaudited	Audited
South African taxation
	Normal taxation	1	—	—
	Deferred taxation
	Other temporary differences	(13)	(15)	(18)
	Change in estimated deferred tax rate	—	—	(14)
		(12)	(15)	(32)
Foreign taxation
	Normal taxation	225	90	299
	Prior year under (over) provision	1	(4)	(1)
	Deferred taxation
	Temporary differences	(4)	(13)	(28)
	Prior year under (over) provision	—	4	1
	Change in estimate	(2)	—	9
	Change in statutory tax rate	—	—	2
		220	77	282
		208	62	250