Lease Receivables (Reconciliation of Allowance for Doubtful Accounts Related to Lease Receivables) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Leases [Abstract]
Balance at beginning of year	¥ 203	¥ 283	¥ 238
Charged to costs or expenses, or charge-off	(98)	(57)	3
Foreign currency translation	2	(23)	42
Balance at end of year	¥ 107	¥ 203	¥ 283

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

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)(ii)
-URI http://asc.fasb.org/extlink&oid=25496975&loc=d3e45377-112738

Name:	us-gaap_CapitalLeasesNetInvestmentInSalesTypeLeasesAllowanceForUncollectibleMinimumLeasePayments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant