Investments in associates and joint ventures - Additional Information (Detail) ¥ in Millions	12 Months Ended
Mar. 31, 2024 JPY (¥)
Investments accounted for using equity method [member]
Investments In Joint Ventures And Associates [Line Items]
Other operating (income) expense, net	¥ 19,763

A realized gain for the shares transferred and a remeasurement gain based on fair value of the shares Sony continues to hold after the transfer, which were recognized as a result of transfer of a portion of equity interest in its subsidiary, which resulted in loss of control over the subsidiary and need to apply the equity method.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration