Film Costs - Additional Information (Detail) (JPY ¥) In Billions, unless otherwise specified	12 Months Ended
Mar. 31, 2012
Film and Television Costs Disclosure [Line Items]
Unamortized costs of released films	90.00%
Completed film costs expected to be amortized during the next twelve months	¥ 84
Accrued participation liabilities expected to be paid in next twelve months	¥ 91
Amortization for released films	3 years

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Film Costs, Amortization Period

+ References

No definition available.

+ Details

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- Definition

The amount of accrued participation liabilities that it expects to pay during the upcoming operating cycle.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 926

-SubTopic 405

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6473241&loc=d3e56166-107971

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- Definition

The amount of film costs related to completed films that are expected to be amortized during the upcoming operating cycle.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 926

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6473108&loc=d3e54406-107959

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- Definition

The percentage of unamortized film costs for released films, excluding acquired film libraries, that it expects to amortize within three years from the date of the balance sheet.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 926

-SubTopic 20

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6473108&loc=d3e54434-107959

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