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Share capital (Tables)

12 Months Ended

Dec. 31, 2017

Rio Tinto plc [member]

Disclosure Of Classes Of Share Capital [Line Items]

Summary of share capital

	2017 US$m	2016 US$m
Issued and fully paid up share capital of 10p each (a)
At 1 January	224	224
Ordinary shares purchased and cancelled (b)	(4)	-
At 31 December	220	224

(a) 26,241 new shares (2016: 33,210 new shares) were issued during the year and 147,126 shares (2016: 743,380 shares) were reissued from treasury pursuant to share plans.

(b) During the year 32,937,109 shares (2016: nil shares) were purchased and immediately cancelled.

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- Definition

The disclosure of classes of share capital. [Refer: Share capital [member]]

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