Revenue - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Statements [Line Items]
Revenue from contracts with customers	¥ 444,964	¥ 303,779	¥ 231,274
Amortisation, assets recognised from costs incurred to obtain or fulfil contracts with customers	¥ 4,562	¥ 4,686	¥ 6,917
Bottom of range [member]
Statements [Line Items]
Remaining performance obligation expected timing of satisfaction	1 year	1 year
Top of range [member]
Statements [Line Items]
Remaining performance obligation expected timing of satisfaction	3 years	3 years

The amount of amortisation for assets recognised from the costs incurred to obtain or fulfil contracts with customers. [Refer: Assets recognised from costs to obtain or fulfil contracts with customers; Amortisation expense]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2023-01-01
-Paragraph 128
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_128_b&doctype=Standard
-URIDate 2023-03-23

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- Definition

The amount of revenue that was included in the contract liability balance at the beginning of the period. [Refer: Contract liabilities; Revenue from contracts with customers]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2023-01-01
-Paragraph 116
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_116_b&doctype=Standard
-URIDate 2023-03-23

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- Definition

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+ References

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