Employee Benefits - Summary of Assumptions Used Defined Benefit Provident Fund Plan (Detail)	Mar. 31, 2026	Mar. 31, 2025
Japanese plans [Member]
Disclosure of defined benefit plans [line items]
Discount rate	3.10%	2.20%
Foreign plans [Member]
Disclosure of defined benefit plans [line items]
Discount rate	5.50%	5.40%

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 [domain]]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 19
-IssueDate 2025-01-01
-Paragraph 144
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_144&doctype=Standard
-URIDate 2025-03-27

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Balance Type:	na
Period Type:	instant