Acquisitions (Details 4) (JPY ¥) In Millions, except Per Share data	12 Months Ended
Mar. 31, 2009	Mar. 31, 2011 Sony and GSN [Member]	Mar. 31, 2010 Sony and GSN [Member]
Combined results of operations of Sony and GSN
Net sales	¥ 7,266,265	¥ 6,325,310	¥ 6,313,222
Operating income (loss)	(234,724)	199,445	60,685
Net loss attributable to Sony Corporation's stockholders	¥ (104,614)	¥ (259,731)	¥ (33,655)
Net loss attributable to Sony Corporation's stockholders
Basic EPS	¥ (104.25)	¥ (258.81)	¥ (33.54)
Diluted EPS	¥ (104.25)	¥ (258.81)	¥ (33.54)

Operating income.

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 54

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 55

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+ References

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