Defined benefit plans (Detail 7)	Dec. 31, 2023	Dec. 31, 2022
Swiss defined benefit plans
Disclosure Of Defined Benefit Plans [Line Items]
Discount rate	1.48%	2.34%
Rate of pension increase	0.00%	0.00%
Rate of interest credit on retirement savings	2.54%	3.39%
UK defined benefit plans
Disclosure Of Defined Benefit Plans [Line Items]
Discount rate	4.79%	5.02%
Rate of pension increase	2.94%	3.08%
Rate of interest credit on retirement savings	0.00%	0.00%
US defined benefit plans
Disclosure Of Defined Benefit Plans [Line Items]
Discount rate	4.75%	4.92%
Rate of pension increase	0.00%	0.00%
Rate of interest credit on retirement savings	6.28%	5.73%
German defined benefit plans
Disclosure Of Defined Benefit Plans [Line Items]
Discount rate	3.28%	3.81%
Rate of pension increase	2.10%	2.20%
Rate of interest credit on retirement savings	0.00%	0.00%

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]]

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

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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]]

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The expected rate of interest credit on retirement savings that is used as a significant actuarial assumption to determine the present value of a defined benefit obligation.

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