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Share of profit after tax of equity accounted units
 12 Months Ended
Dec. 31, 2019
Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract]  
Share of profit after tax of equity accounted units
7 Share of profit after tax of equity accounted units

2019
US$m

2018
US$m

2017
US$m

Sales revenue: Rio Tinto share(a)
2,358

2,497

1,960

Operating costs
(1,812
)
(1,656
)
(1,400
)
Profit before finance items and taxation
546

841

560

Finance items
(65
)
(69
)
(47
)
Share of profit after tax of equity accounted units
10

14

17

Profit before taxation
491

786

530

Taxation
(190
)
(273
)
(191
)
Profit for the year (Rio Tinto share)
301

513

339



(a) Sales revenue of equity accounted units includes sales by equity accounted units to Group subsidiaries.

Further information relating to the Group’s interests in joint ventures and associates is given in notes 35 and 36.