Minimum Tradable Quantity of Share Lot

No definition available.

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Amount of dividends that can be declared or paid with approval of regulatory agency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e))
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Balance Type:	credit
Period Type:	instant

- Definition

Expiration date for the purchase of an entity's own shares under a stock repurchase plan, in the CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

+ References

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-Subparagraph (SX 210.5-02.29,30)
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+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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- Definition

The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

+ References

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-Publisher FASB
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Balance Type:	debit
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- Definition

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Shareholders' equity - Additional information (Detail) - JPY (¥) ¥ / shares in Units, ¥ in Millions		12 Months Ended
	Apr. 27, 2017	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Class of Stock [Line Items]
Amounts available for distributions		¥ 1,193,497	¥ 1,069,296	¥ 735,394
Dividends on common stock per share		¥ 20	¥ 13	¥ 19
Minimum tradable quantity of share lot		100
Common stock held in treasury, shares		294,133,150	214,170,602
Common stock held in treasury, value		¥ 182,792	¥ 148,517
Repurchased shares of common stock		121,010,524	24,364,753	155,232,995
Subsequent Event [Member] \| Minimum [Member]
Class of Stock [Line Items]
Share buyback program date	May 17, 2017
Subsequent Event [Member] \| Maximum [Member]
Class of Stock [Line Items]
Repurchased shares of common stock	100,000,000
Repurchased shares of common stock at cost	¥ 80,000
Share buyback program date	Mar. 30, 2018
Affiliated companies
Class of Stock [Line Items]
Common stock held in treasury, shares		759,725	1,129,833	1,141,686
Common stock held in treasury, value		¥ 758	¥ 2,024	¥ 2,017