The amount, per share, of dividends recognised as distributions to owners.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 107
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_107&doctype=Standard
-URIDate 2019-03-27

Name:	ifrs-full_DividendsRecognisedAsDistributionsToOwnersPerShare
Namespace Prefix:	ifrs-full_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

Capital structure and financing - C.2. Dividend distributions (Details) - USD ($) $ / shares in Units, $ in Millions	May 02, 2019	May 04, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share Capital, Reserves And Other Equity Interest And Financial Instruments [Abstract]
Dividends recognised as distributions	$ 2.64	$ 2.64
Statutory reserves unavailable for distribution			$ 310	$ 306	$ 324