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Impairment charges and reversals (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure Of Impairment Loss Recognised Or Reversed [Abstract]

Summary of impairment charges and reversals

Strategic report

Governance report

Financial statements

Production, reserves
and operations

Additional information

								Non-
								controlling			Net			Pre-tax			Pre-tax
		Pre-tax			Taxation			interests			amount			amount			amount
			2017			2017			2017			2017			2016			2015
	Note	US$m			US$m			US$m			US$m			US$m			US$m
Energy & Minerals – Roughrider			(357	)		100			-			(257	)		-			(229	)
Energy & Minerals – Rössing			(267	)		7			83			(177	)		-			-
Energy & Minerals – Simandou			-			-			91			91			-			(2,039	)
Energy & Minerals – Energy Resources of Australia			-			-			-			-			-			(260	)
Copper & Diamonds – Argyle			(172	)		34			-			(138	)		(241	)		-
Copper & Diamonds – Molybdenum Autoclave Process			-			-			-			-			-			(17	)
Aluminium – Other			-			-			-			-			-			(179	)
Other			-			-			-			-			(8	)		(67	)
Total impairment charge net of reversals			(796	)		141			174			(481	)		(249	)		(2,791	)

Allocated as:
Goodwill	12		-												-			(116	)
Intangible assets	13		(357	)											(1	)		(1,833	)
Property, plant and equipment	14		(435	)											(248	)		(652	)
Other assets and liabilities			(4	)											-			(190	)
Total impairment charge net of reversals			(796	)											(249	)		(2,791	)
Comprising:
Total impairment charge net of reversals in the financial information by business unit (page 206)												(796	)		(249	)		(2,791	)
Taxation (including related to EAUs)												141			66			(57	)
Non-controlling interests												174			-			1,046
Total impairment in the income statement												(481	)		(183	)		(1,802	)

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