Employee benefits (Details 2) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
IfrsStatementLineItems [Line Items]
Total	$ (1,182)	$ (1,023)	$ (2,364)	$ (1,947)
Salaries Accrued Vacations And Related Charges [Member]
IfrsStatementLineItems [Line Items]
Total	(943)	(857)	(1,867)	(1,604)
Variable Compensation Programs [Member]
IfrsStatementLineItems [Line Items]
Total	(100)	(131)	(179)	(271)
Profit Sharing [Member]
IfrsStatementLineItems [Line Items]
Total	(135)	(32)	(311)	(67)
Management Fees And Charges [Member]
IfrsStatementLineItems [Line Items]
Total	$ (4)	$ (3)	$ (7)	$ (5)

The expense of all forms of consideration given by an entity in exchange for a service rendered by employees or for the termination of employment.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 102
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_102&doctype=Standard
-URIDate 2023-03-23

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 99
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_99&doctype=Standard
-URIDate 2023-03-23

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 104
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_104&doctype=Standard
-URIDate 2023-03-23

Name:	ifrs-full_EmployeeBenefitsExpense
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration