Schedule of Reimbursements payable (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Property, plant and equipment [abstract]
Opening balance	$ 364	$ 370
Additions/(Write-offs) on PP&E	(37)	(67)
Other income and expenses	12	54
Cumulative translation adjustments	22	15
Closing balance	$ 361	$ 372

The amount of the entity's rights to the reimbursement by another party of some or all of the expenditure required to settle a defined benefit obligation recognised as a separate asset and measured at fair value. [Refer: At fair value [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2021-01-01
-Paragraph 140
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_140_b&doctype=Standard
-URIDate 2021-03-24

Name:	ifrs-full_ReimbursementRightsAtFairValue
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant