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Amount of Put Payment Paid to Current Investor

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Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options Percentage

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- Definition

Interest of Put Payment Paid to Current Investor

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- Definition

Interest Rate On Exercise Price Payments

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- Definition

Number Of Principal Payments

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- Definition

Option Exercise Price Second Payment Due Date

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- Definition

Put Option Exercise Price Value Payments Each

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- Definition

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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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.

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- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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- Definition

Amount of liabilities assumed at the acquisition date.

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- Definition

Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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- Definition

Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer).

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The amount of purchased research and development assets that are acquired in a business combination have no alternative future use and are therefore written off in the period of acquisition.

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Acquisitions - Additional Information (Detail) ¥ in Millions, $ in Millions					1 Months Ended	12 Months Ended
	Aug. 14, 2014 JPY (¥)	Dec. 13, 2013 USD ($)	Apr. 02, 2013 USD ($)	Aug. 10, 2012 JPY (¥)	Sep. 30, 2012 USD ($) Times	Mar. 31, 2015 JPY (¥)	Mar. 31, 2015 USD ($)	Mar. 31, 2014 JPY (¥)	Mar. 31, 2013 JPY (¥)
Business Acquisition [Line Items]
Consideration received for sale of interest by Current Investor						¥ 1,637		¥ 200
Amount owed to Current Investor						316,422		302,299
Goodwill						¥ 561,255		691,803	¥ 643,243
Acquisition date						Jun. 29, 2012	Jun. 29, 2012
Other acquisitions
Business Acquisition [Line Items]
Total acquisition cost						¥ 23,103		19,373	39,022
Goodwill						12,626		10,243	27,699
Cash consideration for acquisition	¥ 18,900			¥ 28,167		¥ 18,900			¥ 28,167
Acquisition date						Aug. 14, 2014	Aug. 14, 2014		Aug. 10, 2012
Intangible assets						¥ 10,731		10,965	¥ 11,511
In-process research and development \| $							$ 0
Game Show Network, Llc
Business Acquisition [Line Items]
Date of obtaining non controlling interest						2011-03	2011-03
Consideration received for sale of interest by Current Investor \| $					$ 234
Amount of Put Payment payable to Current Investor \| $					$ 117
Interest on Put Payment payable to Current Investor					10.00%
Option exercise price, second payment due date						Dec. 13, 2013	Dec. 13, 2013
Amount of put payment paid to current investor \| $		$ 117	$ 117
Interest of put payment paid to current investor \| $		$ 12	$ 4
Game Show Network, Llc \| Put and call options
Business Acquisition [Line Items]
Ownership percentage in equity method investment						18.00%
Game Show Network, Llc \| Put option
Business Acquisition [Line Items]
Percentage of interest sold by Current Investor on exercise of put right					18.00%
Number of payments for put option exercise \| Times					2
Amount owed to Current Investor \| $					$ 234
Renesas \| Sony Semiconductor Kyushu Corporation
Business Acquisition [Line Items]
Total acquisition cost								7,510
Goodwill								0
Liabilities assumed								¥ 0