Reconciliation of the differences between basic and diluted EPS - Additional Information (Detail) - shares shares in Thousands	12 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Statements [Line Items]
Anti dilutive securities excluded from the computation of diluted earnings per share	6,895	11,223	4,790

Anti dilutive securities excluded from the computation of diluted earnings per share.

No definition available.

Name:	sony_AntiDilutiveSecuritiesExcludedFromTheComputationOfDilutedEarningsPerShare
Namespace Prefix:	sony_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration