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v3.24.1.u1

Employee benefits (Details 8) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Overfunded Pension Plans [Member] | Country of domicile [member] |  |
IfrsStatementLineItems [Line Items] |  |
Actuarial assumption of expected rates of inflation | 3.08% | 3.50%
Overfunded Pension Plans [Member] | Country of domicile [member] | Actuarial assumption of discount rates [member] |  |
IfrsStatementLineItems [Line Items] |  |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | $ 2,940 |
Actuarial Assumption Of Discount Rate, Increase In Assumption | 9.60% |
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | $ 3,399 |
Actuarial Assumption Of Discount Rate, Decrease In Assumption | 7.60% |
Overfunded Pension Plans [Member] | Country of domicile [member] | Bottom of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Actuarial assumption of discount rates | 8.57% | 9.77%
Actuarial assumption of nominal average rate of expense or income | 8.57% | 9.77%
Actuarial assumption of expected rates of salary increases | 3.08% | 3.50%
Actuarial assumption of expected rates of pension increases | 3.08% | 3.50%
Overfunded Pension Plans [Member] | Country of domicile [member] | Top of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Actuarial assumption of discount rates | 8.63% | 9.88%
Actuarial assumption of nominal average rate of expense or income | 8.63% | 9.88%
Actuarial assumption of expected rates of salary increases | 4.94% | 5.36%
Actuarial assumption of expected rates of pension increases | 3.60% | 4.02%
Overfunded Pension Plans [Member] | Foreign countries [member] |  |
IfrsStatementLineItems [Line Items] |  |
Actuarial assumption of discount rates | 4.63% | 5.10%
Actuarial assumption of nominal average rate of expense or income | 5.10% | 2.84%
Actuarial assumption of expected rates of salary increases | 3.31% | 3.23%
Actuarial assumption of expected rates of pension increases | 3.00% | 3.00%
Actuarial assumption of expected rates of inflation | 2.08% | 2.06%
Overfunded Pension Plans [Member] | Foreign countries [member] | Actuarial assumption of discount rates [member] |  |
IfrsStatementLineItems [Line Items] |  |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | $ 1,237 |
Actuarial Assumption Of Discount Rate, Increase In Assumption | 5.63% |
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | $ 1,506 |
Actuarial Assumption Of Discount Rate, Decrease In Assumption | 3.63% |
Underfunded Pension Plans [Member] | Country of domicile [member] |  |
IfrsStatementLineItems [Line Items] |  |
Actuarial assumption of discount rates | 10.15% | 10.66%
Actuarial assumption of nominal average rate of expense or income | 10.15% | 10.66%
Actuarial assumption of expected rates of salary increases | 4.50% | 6.86%
Actuarial assumption of expected rates of pension increases | 4.50% | 6.86%
Actuarial assumption of expected rates of inflation | 4.50% | 4.25%
Underfunded Pension Plans [Member] | Country of domicile [member] | Actuarial assumption of discount rates [member] |  |
IfrsStatementLineItems [Line Items] |  |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | $ 262 |
Actuarial Assumption Of Discount Rate, Increase In Assumption | 11.15% |
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | $ 283 |
Actuarial Assumption Of Discount Rate, Decrease In Assumption | 9.15% |
Underfunded Pension Plans [Member] | Foreign countries [member] |  |
IfrsStatementLineItems [Line Items] |  |
Actuarial assumption of discount rates | 4.63% | 5.10%
Actuarial assumption of nominal average rate of expense or income | 5.10% | 2.84%
Actuarial assumption of expected rates of salary increases | 3.31% | 3.23%
Actuarial assumption of expected rates of pension increases | 3.00% | 3.00%
Actuarial assumption of expected rates of inflation | 2.08% | 2.06%
Underfunded Pension Plans [Member] | Foreign countries [member] | Actuarial assumption of discount rates [member] |  |
IfrsStatementLineItems [Line Items] |  |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | $ 745 |
Actuarial Assumption Of Discount Rate, Increase In Assumption | 5.63% |
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | $ 957 |
Actuarial Assumption Of Discount Rate, Decrease In Assumption | 3.63% |
Other Benefits [Member] | Country of domicile [member] |  |
IfrsStatementLineItems [Line Items] |  |
Actuarial assumption of medical cost trend rates | 6.17% | 6.35%
Actuarial assumption of ultimate medical cost trend rates | 6.17% | 6.35%
Actuarial assumption of expected rates of inflation | 3.08% |
Other Benefits [Member] | Country of domicile [member] | Actuarial assumption of discount rates [member] |  |
IfrsStatementLineItems [Line Items] |  |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | $ 501 |
Actuarial Assumption Of Discount Rate, Increase In Assumption | 9.67% |
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | $ 387 |
Actuarial Assumption Of Discount Rate, Decrease In Assumption | 7.67% |
Other Benefits [Member] | Country of domicile [member] | Bottom of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Actuarial assumption of discount rates | 8.59% | 9.81%
Other Benefits [Member] | Country of domicile [member] | Top of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Actuarial assumption of discount rates | 8.74% | 9.90%
Other Benefits [Member] | Foreign countries [member] |  |
IfrsStatementLineItems [Line Items] |  |
Actuarial assumption of discount rates | 4.64% | 5.14%
Actuarial assumption of nominal average rate of expense or income | 5.14% | 3.03%
Actuarial assumption of medical cost trend rates | 4.85% | 5.11%
Actuarial assumption of ultimate medical cost trend rates | 4.49% | 4.57%
Other Benefits [Member] | Foreign countries [member] | Actuarial assumption of discount rates [member] |  |
IfrsStatementLineItems [Line Items] |  |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | $ 677 |
Actuarial Assumption Of Discount Rate, Increase In Assumption | 5.65% |
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption | $ 880 |
Actuarial Assumption Of Discount Rate, Decrease In Assumption | 3.64% |

X
- Definition The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 144 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_144&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The expected rate of inflation that is used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [member]; Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 144 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_144&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The expected rate of increases in pension that is used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [member]; Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 144 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_144&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition Medical cost trend rate used as significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 144 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_144&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The increase (decrease) in a defined benefit obligation that would have been caused by a decrease in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 145 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_145_a&doctype=Standard -URIDate 2023-03-23 + Details
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