Acquired Finite Lived Intangible Asset Amount.

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- Definition

Amount decrease in goodwill as a resulted changes recognized from percentage interest acquire.

+ Details

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- Definition

Finite and infinite intangible assets acquired.

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- Definition

Goodwill and intangible assets.

+ Details

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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

In a business combination achieved in stages, this element represents the acquisition-date percentage of equity in the acquiree held by the acquirer immediately before the acquisition date.

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- Definition

Aggregate amount of amortization expense recognized for intangible asset during the period. A recognized intangible asset shall be amortized over its estimated useful life to the reporting entity unless that life is determined to be indefinite. If an intangible asset has a finite useful life, but the precise length of that life is not known, that intangible asset shall be amortized over the best estimate of its useful life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph a(2)

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Goodwill and Intangible Assets (Details Textuals) (JPY ¥) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2011	Mar. 31, 2010	Mar. 31, 2009	Mar. 31, 2010 Sony BMG Acquisition [Member]	Mar. 31, 2011 Sony BMG Acquisition [Member]	Oct. 01, 2008 Sony BMG Acquisition [Member]
Business Acquisition [Line Items]
Equity interest under the equity method					0.50	0.50
Amount decrease in goodwill due to purchase price adjustment				¥ 8,649
Goodwill and intangible assets (Textuals) [Abstract]
Intangible assets acquired	92,249
Acquired Finite Lived Intangible Assets Amount	83,188
Aggregate amortization expense for intangible assets	¥ 52,763	¥ 57,069	¥ 47,101