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Segment Information - Summary of Investments (Parenthetical) (Detail) - Sony Life [member] - JP [member] € in Billions | 12 Months Ended
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Dec. 31, 2019 EUR (€)
Disclosure Of Summarized Investment Per Segment [line items] |
Off balance sheet investment in joint venture | € 2.3
Potential Divestment In Associate [member] |
Disclosure Of Summarized Investment Per Segment [line items] |
Percentage of divestment in joint venture | 50.00%

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- Definition Percentage of divestment in joint venture + References No definition available. + Details
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- Details
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- Details
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- Details
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