Film Costs - Additional Information (Detail) ¥ in Billions	12 Months Ended
Mar. 31, 2019 JPY (¥)
Film Costs [Abstract]
Unamortized film costs of released motion picture and television productions	93.00%
Completed film costs expected to be amortized during the next twelve months	¥ 168
Accrued participation liabilities expected to be paid in next twelve months	¥ 166

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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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- References

No definition available.

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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://fasb.org/us-gaap/role/ref/legacyRef
-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://fasb.org/us-gaap/role/ref/legacyRef
-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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