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Employment costs

12 Months Ended

Dec. 31, 2018

Disclosure Of Employee Cost Explanatory [Abstract]

Employment costs

5 Employment costs

			2018			2017			2016
	Note	US$m			US$m			US$m
Total employment costs
– Wages and salaries			4,154			4,129			4,235
– Social security costs			336			337			429
– Net post-retirement charge	44		532			500			522
– Share-based payment charge	43		122			91			116
			5,144			5,057			5,302
Less: charged within provisions ^(a)	26		(416	)		(292	)		(421	)
Total employment costs	4		4,728			4,765			4,881

(a)	Amounts included above in respect of provisions for pensions, post-retirement healthcare, long service leave and other employee entitlements which are included in “Provisions (including exchange differences on provisions)” in note 4.