Lease Receivables (Lease Receivables Included in Other Current Assets and Other Assets in Accompanying Consolidated Balance Sheets) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Leases [Abstract]
Total minimum lease payments receivable	¥ 35,891	¥ 33,636
Unguaranteed residual values	877	1,642
Unearned income	(3,712)	(2,627)
Executory costs	(14)	(11)
Capital Leases, Net Investment in Sales Type Leases Gross, Total	33,042	32,640
Less, allowance for doubtful receivables	(107)	(203)	¥ (283)	¥ (238)
Capital Leases, Net Investment in Sales Type Leases, Total	32,935	32,437
Less, portion due within one year	(11,421)	(11,721)
Total	¥ 21,514	¥ 20,716

Capital Leases, Net Investment in Sales Type Leases Gross

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- Definition

The net amount due within one year of the balance sheet date or the normal operating cycle, if longer, consisting of: (a) minimum lease payments on sales type leases and (b) unguaranteed residual value; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

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- Definition

The net amount due after one year of the balance sheet date or beyond the normal operating cycle, if longer, consisting of: (a) minimum lease payments on sales type leases, and (b) unguaranteed residual value; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

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- Definition

The net investment in sales type leases as of the balance sheet date consisting of: (a) minimum lease payments on sales type leases and (b) unguaranteed residual value; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

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- Definition

The estimate of minimum payments on sales-type leases that are probable of not being collected as of the balance sheet date.

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- Definition

The remaining (unamortized) difference between the gross investment in a sales-type lease and the cost or carrying amount of the leased property as of the balance sheet date.

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- Definition

Estimated remaining costs to be incurred to service the sales-type lease, such as taxes, maintenance and insurance and the profit thereon, that are included in the minimum lease payments.

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- Definition

Amount of remaining payments as of the balance sheet date that lessees are obligated to make or can be required to make under sales-type leases, including any guarantee of residual value and executory costs. The amount also includes any guaranteed rental payments by an unrelated third-party provided that are financially capable of making such payments.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=25496975&loc=d3e45377-112738

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 25
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=7661868&loc=d3e34102-112682

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- Definition

The estimate of the lease property's economic value at the end of the sales-type lease term excluding any amounts guaranteed by either the lessee or a third-party.

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