Proceeds from sale of shares in security investments.

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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No definition available.

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Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

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No definition available.

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- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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- Definition

Amount of loss from downward price adjustment on investment in equity security without readily determinable fair value.

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- Definition

Amount of gain from upward price adjustment on investment in equity security without readily determinable fair value.

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- Definition

Amount of gain (loss) on sale or disposal of equity in securities of subsidiaries.

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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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No definition available.

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Amount of realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI).

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No definition available.

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Amount of unrealized gain (loss) on investment in marketable security.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of unrealized holding gain before loss recognized in the income statement for investments in trading securities.

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No definition available.

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The increase (decrease), resulting in a gain, in the difference between the fair value and the carrying value, or in the comparative fair values, of securities held at each balance sheet date, that was included in earnings for the period.

+ References

No definition available.

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Marketable Securities and Securities Investments - Additional Information (Detail) ¥ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2020 JPY (¥)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 JPY (¥)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 JPY (¥)	Mar. 31, 2019 USD ($)	Apr. 03, 2018
Investment Holdings [Line Items]
Proceeds from sales of available-for-sale securities	¥ 84,362		¥ 66,906		¥ 39,982
Gross realized gains from available-for-sale securities	354		240		1,257
Gross realized losses from available-for-sale securities	128		475		2
Marketable securities classified as trading securities	270,120		234,117
Net unrealized gains on trading securities	1,705		3,610		¥ 48,047
Net realized gains on sale of equity securities	20,176		77,495
Net unrealized gains on revaluation of equity securities	134,831		104,168
Gain or loss on sale of shares in security investments	61,544
Investment in non public companies	30,120		25,720
Equity securities without readily determinable fair value, downward price adjustment	9,075		4,285
Equity securities without readily determinable fair value, upward price adjustment	1,070
Spotify Technology SA
Investment Holdings [Line Items]
Ownership percentage							5.707%
Proceed from sale of shares			82,616	$ 768
Gain or loss on sale of shares in security investments	0		54,179	504
Gross fair value of retained shares			78,947			$ 711
Gain on equity securities, net	¥ (6,063)	$ (57)	¥ 47,543	$ 449