XML 271 R68.htm IDEA: XBRL DOCUMENT

Goodwill (Tables)

12 Months Ended

Dec. 31, 2018

		2018			2017
	US$m			US$m
Net book value
At 1 January		1,037			951
Adjustment on currency translation		(125	)		86
At 31 December		912			1,037
– cost		15,861			17,942
– accumulated impairment		(14,949	)		(16,905	)

At 1 January
– cost		17,942			17,144
– accumulated impairment		(16,905	)		(16,193	)

At 31 December, goodwill has been allocated as follows:
		2018		2017
	US$m		US$m
Net book value
Richards Bay Minerals		474		552
Pilbara		351		389
Dampier Salt		87		96
		912		1,037

Key assumptions calculation of fair value less costs of disposal

The key assumptions to which the calculation of FVLCD for Richards Bay Minerals is most sensitive and the corresponding decrease in FVLCD are set out below:

	US$m
5% decrease in the titanium slag price	174
1% increase in the discount rate applied to post-tax cash flows	195
10% strengthening of the South African rand	328