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Dividends (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure Of Dividends [Abstract]

Summary of dividends paid

		2017			2016			2015
	US$m			US$m			US$m
Rio Tinto plc previous year final dividend paid		1,725			1,443			1,642
Rio Tinto plc interim dividend paid		1,530			604			1,476
Rio Tinto Limited previous year final dividend paid		523			473			520
Rio Tinto Limited interim dividend paid		472			205			438
Dividends paid during the year		4,250			2,725			4,076

Dividends per share: paid during the year		235.0	c		152.5	c		226.5	c
Dividends per share: proposed in the announcement of the results for the year		180.0	c		125.0	c		107.5	c

Summary of dividends per share

	Dividends			Dividends			Dividends
	per share			per share			per share
		2017			2016			2015
Rio Tinto plc previous year final (pence)		100.56	p		74.21	p		77.98	p
Rio Tinto plc interim (pence)		83.13	p		33.80	p		68.92	p
Rio Tinto Limited previous year final – fully franked at 30% (Australian cents)		163.62	c		151.89	c		152.98	c
Rio Tinto Limited interim – fully franked at 30% (Australian cents)		137.72	c		59.13	c		144.91	c

Summary of number of shares dividend distributed

	Number			Number			Number
	of shares			of shares			of shares
		2017			2016			2015
	(millions)			(millions)			(millions)
Rio Tinto plc previous year final		1,374.6			1,373.9			1,412.7
Rio Tinto plc interim		1,366.1			1,374.4			1,395.2
Rio Tinto Limited previous year final		424.0			423.5			435.0
Rio Tinto Limited interim		424.0			424.0			423.7