Other Liabilities - Narrative (Details) - JPY (¥) ¥ in Millions	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Subclassifications of assets, liabilities and equities [abstract]
Accrued labor cost	¥ 291,957	¥ 283,359
Government grants received	¥ 12,001	¥ 14,211

The cash inflow from government grants, classified as financing activities. [Refer: Government [member]; Government grants]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 20
-IssueDate 2024-01-01
-Paragraph 28
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=20&code=ifrs-tx-2024-en-r&anchor=para_28&doctype=Standard
-URIDate 2024-03-27

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