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Debt Instrument Conversion Obligation Trading Price As Percentage Of Average Lowest Trading Prices For Common Stock

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Debt Instrument Principal Amount Outstanding Percentage

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Marketable securities restricted amount.

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Pledged housing loans.

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The price per share of the conversion feature embedded in the debt instrument.

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Earliest date when the debt instrument can be converted into equity, in CCYY-MM-DD format.

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Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

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Face (par) amount of debt instrument at time of issuance.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Latest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

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Earliest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Amount of long-term debt and lease obligation, including portion classified as current.

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Carrying amount of collateralized debt obligations with maturities initially due after one year or beyond the operating cycle, if longer, excluding the current portion. Obligations include, but not limited to, mortgage loans, chattel loans, and other borrowings secured by assets.

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If the financial instrument is not redeemable currently (for example, because a contingency has not been met), and it is not probable that the security will become redeemable, the reason for this uncertainty in redemption.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Short-Term Borrowings and Long-Term Debt - Additional Information (Detail) ¥ / shares in Units, ¥ in Millions		12 Months Ended
	Jul. 21, 2015 JPY (¥) TradingDay ¥ / shares	Mar. 31, 2020 JPY (¥) ¥ / shares	Jun. 10, 2020 ¥ / shares	Oct. 31, 2019 JPY (¥)	Mar. 31, 2019 JPY (¥) ¥ / shares
Debt Instrument [Line Items]
Short-term borrowings		¥ 810,176			¥ 618,618
Long-term debt including current portion		664,773			740,833
Aggregate principal amount newly issued for repayment of borrowings and debt				¥ 100,000
Securities Pledged As Collaterals
Debt Instrument [Line Items]
Marketable securities and securities investments pledged as collateral, book value		52,942
Pledged housing loans, book value		378,241
Long-term secured loan		200,000
Committed Lines of Credit
Debt Instrument [Line Items]
Line of credit facility, remaining borrowing capacity		¥ 518,147
Line of credit facility, period up to which company can borrow		180 days
Commercial Paper Programs
Debt Instrument [Line Items]
Line of credit facility, remaining borrowing capacity		¥ 1,044,150
Line of credit facility, period up to which company can borrow		270 days
Cash settlements, variation margins of futures markets and certain other purposes
Debt Instrument [Line Items]
Marketable securities and securities investments pledged as collateral, book value		¥ 12,445
Repurchase agreement, weighted average interest rate of 0.01%
Debt Instrument [Line Items]
Securities investments pledged as collateral, book value		474,644
Repurchase agreement, weighted average interest rate of 0.01% \| Securities Pledged As Collaterals
Debt Instrument [Line Items]
Short-term borrowings		567,194
Secured Call Money Weighted Average Interest Rate 0.08% \| Securities Pledged As Collaterals
Debt Instrument [Line Items]
Short-term borrowings		151,257
Marketable securities and securities investments pledged as collateral, book value		42,576
Unsecured zero coupon convertible bonds, due 2022
Debt Instrument [Line Items]
Long-term debt including current portion	¥ 120,000	¥ 119,531			¥ 119,961
Debt instrument interest rate	130.00%
Stock acquisition rights, start date	Sep. 01, 2015
Stock acquisition rights, end date	Sep. 28, 2022
Conversion price per common share \| ¥ / shares		¥ 4,996.0			¥ 5,008.0
Amount in excess of dividends for which conversion price is adjusted \| ¥ / shares	¥ 25
Debt instrument outstanding percentage	100.00%
Debt instrument redeemable date	Jul. 21, 2020
Debt instrument conversion price percentage on consecutive trading days	130.00%
Debt instrument, convertible, consecutive trading days \| TradingDay	20
Basis for conversion bonds outstanding		if the closing sales price per share of Sony’s common stock on the Tokyo Stock Exchange is 130% or more of the conversion price of the Zero Coupon Convertible Bonds for 20 consecutive trading days
Unsecured zero coupon convertible bonds, due 2022 \| Minimum
Debt Instrument [Line Items]
Conversion price per common share \| ¥ / shares	¥ 3,526.5
Amount in excess of dividends for which conversion price is adjusted \| ¥ / shares		¥ 25
Unsecured zero coupon convertible bonds, due 2022 \| Maximum
Debt Instrument [Line Items]
Conversion price per common share \| ¥ / shares	¥ 5,008.0
Amount in excess of dividends for which conversion price is adjusted \| ¥ / shares		¥ 45
Unsecured zero coupon convertible bonds, due 2022 \| Subsequent event
Debt Instrument [Line Items]
Conversion price per common share \| ¥ / shares			¥ 4,982.5