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Leased Assets under Capital Leases (Detail) - JPY (¥)
¥ in Millions
Mar. 31, 2015
Mar. 31, 2014
Capital Leased Assets [Line Items]    
Accumulated amortization ¥ (89,470) ¥ (59,352)
Leased assets under capital leases, Net 48,609 85,615
Machinery, equipment and others    
Capital Leased Assets [Line Items]    
Leased assets under capital leases 129,432 135,619
Film costs    
Capital Leased Assets [Line Items]    
Leased assets under capital leases ¥ 8,647 ¥ 9,348