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Employee benefits (Details 11) - Underfunded Pension Plans [Member] - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
IfrsStatementLineItems [Line Items] |  |
Cash and cash equivalents, amount contributed to fair value of plan assets | $ 6 | $ 2
Equity securities | 112 | 55
Real estate, amount contributed to fair value of plan assets | 27 | 6
Loans to participants, amount contributed to fair value of plan assets | 1 | 1
Other | 131 | 125
Total | 817 | 339
Loans to corporate entities [member] |  |
IfrsStatementLineItems [Line Items] |  |
Debt instruments, amount contributed to fair value of plan assets | 215 | 24
Governmental Bonds [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Debt instruments, amount contributed to fair value of plan assets | 210 | 65
Fixed Income [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Investment funds, amount contributed to fair value of plan assets | 41 | 40
Equity investments [member] |  |
IfrsStatementLineItems [Line Items] |  |
Investment funds, amount contributed to fair value of plan assets | 19 | 13
Ifrs Private Equity Funds [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Structured debt, amount contributed to fair value of plan assets | 55 | 8
Level 2 of fair value hierarchy [member] |  |
IfrsStatementLineItems [Line Items] |  |
Cash and cash equivalents, amount contributed to fair value of plan assets | 6 | 2
Total | 382 | 51
Level 2 of fair value hierarchy [member] | Loans to corporate entities [member] |  |
IfrsStatementLineItems [Line Items] |  |
Debt instruments, amount contributed to fair value of plan assets | 215 | 24
Level 2 of fair value hierarchy [member] | Governmental Bonds [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Debt instruments, amount contributed to fair value of plan assets | 150 | 19
Level 2 of fair value hierarchy [member] | Equity investments [member] |  |
IfrsStatementLineItems [Line Items] |  |
Investment funds, amount contributed to fair value of plan assets | 11 | 6
Level 1 of fair value hierarchy [member] |  |
IfrsStatementLineItems [Line Items] |  |
Equity securities | 112 | 55
Total | 221 | 148
Level 1 of fair value hierarchy [member] | Governmental Bonds [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Debt instruments, amount contributed to fair value of plan assets | 60 | 46
Level 1 of fair value hierarchy [member] | Fixed Income [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Investment funds, amount contributed to fair value of plan assets | 41 | 40
Level 1 of fair value hierarchy [member] | Equity investments [member] |  |
IfrsStatementLineItems [Line Items] |  |
Investment funds, amount contributed to fair value of plan assets | 8 | 7
Level 3 Of Fair Values Hierarchy [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Real estate, amount contributed to fair value of plan assets | 27 | 6
Loans to participants, amount contributed to fair value of plan assets | 1 | 1
Other | 131 | 125
Total | 214 | 140
Level 3 Of Fair Values Hierarchy [Member] | Ifrs Private Equity Funds [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Structured debt, amount contributed to fair value of plan assets | $ 55 | $ 8

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- Definition The amount instruments representing debt (rather than equity) contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 142 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_142_c&doctype=Standard -URIDate 2023-03-23 + Details
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