Reconciliation of the differences between basic and diluted EPS - Additional Information (Detail) - shares shares in Thousands	12 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Statements [Line Items]
Anti dilutive securities excluded from the computation of diluted earnings per share	4,790	4,475

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